Materiały źródłowe

• #1 Muscular Dystrophy – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560582/

  Muscular dystrophy comprises a group of genetic disorders characterized by progressive muscle weakness and wasting, with a global incidence of approximately 1 in 5,000 individuals. While it can manifest at any age, it is most commonly diagnosed in childhood. The root cause of muscular dystrophy lies in mutations affecting genes responsible for muscle structure and function, leading to the gradual degeneration and loss of muscle fibers. […] Clinicians participating in this activity gain a comprehensive understanding of muscular dystrophy, including the global incidence, manifestation across ages, and the genetic basis involving mutations in muscle structure and function genes. […] Participants learn about the impact on skeletal and cardiac muscles, disease progression, and associated complications, enhancing diagnostic and management skills for optimal patient care.

• #2 Clinical and Molecular Diagnosis in Muscular Dystrophies | IntechOpen

  https://www.intechopen.com/chapters/66586

  Muscular dystrophies are a diverse group of inherited muscle disorders with a wide range of clinical manifestations from a severe form with early onset and early death to adult forms with later onset and minimal clinical manifestation that do not affect life-span. […] Overlapping clinical symptoms and the multitude of genes that need to be analyzed for an accurate characterization make the diagnosis hard. […] In next-generation sequencing era, a lot of used assay in molecular diagnostics must be taken into consideration for muscular dystrophy diagnosis. […] However, for more accurate diagnosis, muscle protein expressions analysis may have prognostic value. […] For a rapid and an accurate diagnosis improvement in analysis, methods have become a necessity. The combination of clinical signs with muscle histopathology and protein and genetic analyses becomes the diagnostic gold standard for these disorders.

• #3 Muscular dystrophy – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/diagnosis-treatment/drc-20375394

  Your doctor is likely to start with a medical history and physical examination. […] After that, your doctor might recommend: […] Enzyme tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. In a person who hasn’t had a traumatic injury, high blood levels of creatine kinase (CK) suggest a muscle disease. […] Genetic testing. Blood samples can be examined for mutations in some of the genes that cause types of muscular dystrophy. […] Muscle biopsy. A small piece of muscle can be removed through an incision or with a hollow needle. Analysis of the tissue sample can distinguish muscular dystrophies from other muscle diseases. […] Heart-monitoring tests (electrocardiography and echocardiogram). These tests are used to check heart function, especially in people diagnosed with myotonic muscular dystrophy.

• #4

  https://www.nhs.uk/conditions/muscular-dystrophy/diagnosis/

  Many different methods can be used to diagnose the various types of muscular dystrophy (MD). […] Diagnosis will involve some or all of the following stages: investigating any symptoms, discussing any family history of MD, physical examination, blood tests, electrical tests on the nerves and muscles, a muscle biopsy (where a sample of tissue is removed for testing). […] Identifying when symptoms first appeared and determining which muscles are affected is particularly useful in helping to diagnose different types of MD. […] If there’s a history of MD in your family, it’s important to discuss it with your GP. This can help to determine which type of MD you or your child might have. […] A sample of blood may be taken from a vein in your or your child’s arm to test it for creatine kinase (a protein usually found in muscle fibres).

• #5

  https://www.nhs.uk/conditions/muscular-dystrophy/diagnosis/

  Many different methods can be used to diagnose the various types of muscular dystrophy (MD). […] Diagnosis will involve some or all of the following stages: investigating any symptoms, discussing any family history of MD, physical examination, blood tests, electrical tests on the nerves and muscles, a muscle biopsy (where a sample of tissue is removed for testing). […] Identifying when symptoms first appeared and determining which muscles are affected is particularly useful in helping to diagnose different types of MD. […] If there’s a history of MD in your family, it’s important to discuss it with your GP. This can help to determine which type of MD you or your child might have. […] A sample of blood may be taken from a vein in your or your child’s arm to test it for creatine kinase (a protein usually found in muscle fibres).

• #6 Diagnosis – Duchenne Muscular Dystrophy (DMD) – Diseases | Muscular Dystrophy Association

  https://www.mda.org/disease/duchenne-muscular-dystrophy/diagnosis

  In diagnosing any form of muscular dystrophy, a doctor usually begins by taking a patient and family history and performing a physical examination. Doctors may find pseudohypertrophy, lumbar spine deviation, gait abnormalities, and several grades of diminished muscle reflexes. […] Much can be learned from these observations, including the pattern of weakness. A patients history and physical go a long way toward making a diagnosis, even before any complicated diagnostic tests are done. […] Early in the diagnostic process, doctors often order a blood test called a CK level. CK stands for creatine kinase, an enzyme that leaks out of damaged muscle. When elevated CK levels are found in a blood sample, it usually means muscle is being disintegrated by some abnormal process, such as a muscular dystrophy or inflammation.

• #7 Diagnosis of Duchenne Muscular Dystrophy

  https://www.neurologylive.com/view/diagnosis-of-duchenne-muscular-dystrophy

  For most of our boys with Duchenne muscular dystrophy, they have a phenotype that is readily visible to individuals who are familiar with the diagnosis, whereby the physician would evaluate that child and notice that they had these characteristic findings including things like enlarged calf muscles, difficulties with jumping, and difficulties rising from a seated position on the floor. […] We would proceed by getting the CK blood test, and it would likely be elevated profoundly. […] When we send testing on boys for whom we have a concern for a dystrophinopathy, were going to examine the DNA results. Typically we are evaluating various points within the dystrophin gene. […] One way is a duplication of an exon that makes up that gene. Another way is a deletion of exons within a gene, and thats quite common. The third way is a point mutation within a gene that can lead to abnormalities.

• #8 Duchenne Muscular Dystrophy: Symptoms and Treatment | Doctor

  https://patient.info/doctor/duchenne-muscular-dystrophy-pro

  Assessment and diagnosis – general points: Awareness: consider DMD in any boy who is not walking by 18 months, who has delayed motor milestones or global developmental delay. Aim to make the diagnosis early, to allow genetic counselling for the family – important if parents are considering another pregnancy. NB: it is important to watch the child running and rising from the floor. Look for a waddling gait and Gower’s sign. This is more useful than formal examination in a young child. Remember that DMD is a devastating diagnosis – follow good practice for disclosing bad news. […] Diagnosing Duchenne muscular dystrophy (investigation): The initial investigation is serum creatine kinase (CK): In DMD the CK level is very high (10-100 x normal from birth). A normal CK at presentation excludes DMD. However, later on CK levels fall due to muscle wasting; therefore, it is not reliable as a screening test in those who are already wheelchair users. The precise diagnosis is best achieved by a combination of: Genetic analysis – can identify most (but not all) of the DMD mutations. Muscle biopsy – with assay for dystrophin protein. Clinical observation of muscle strength and function. Genetic testing after a positive biopsy diagnosis of DMD is mandatory. A muscle biopsy is not necessary if a genetic diagnosis is already known. However, if genetic testing has been done and no mutation identified, but CK concentrations are increased and signs or symptoms consistent with DMD are present, the next necessary diagnostic step is to do a muscle biopsy. This is also the case if there is a family history of DMD and a suspicion of the diagnosis but no family mutation known. […] Diagnosis: Muscle biopsy looking at dystrophin is usually helpful. Genetic tests, including X-inactivation patterns.

• #9 Muscular dystrophy – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/diagnosis-treatment/drc-20375394

  Your doctor is likely to start with a medical history and physical examination. […] After that, your doctor might recommend: […] Enzyme tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. In a person who hasn’t had a traumatic injury, high blood levels of creatine kinase (CK) suggest a muscle disease. […] Genetic testing. Blood samples can be examined for mutations in some of the genes that cause types of muscular dystrophy. […] Muscle biopsy. A small piece of muscle can be removed through an incision or with a hollow needle. Analysis of the tissue sample can distinguish muscular dystrophies from other muscle diseases. […] Heart-monitoring tests (electrocardiography and echocardiogram). These tests are used to check heart function, especially in people diagnosed with myotonic muscular dystrophy.

• #10 Diagnosis – Limb-Girdle Muscular Dystrophy (LGMD) – Diseases | Muscular Dystrophy Association

  https://www.mda.org/disease/limb-girdle-muscular-dystrophy/diagnosis

  In diagnosing any form of muscular dystrophy, a doctor usually begins by taking a patient and family history and performing a physical examination. Much can be learned from these, including the pattern of weakness. The history and physical go a long way toward making the diagnosis, even before any laboratory tests are done. […] Early in the diagnostic process, doctors often order a special blood test called a CK level. CK stands for creatine kinase, an enzyme that leaks out of damaged muscle. When elevated CK levels are found in a blood sample, it usually means muscle is being destroyed by some abnormal process, such as a muscular dystrophy or inflammation. Therefore, a high CK level suggests that the muscles themselves are the likely cause of the weakness, but it does not tell exactly what the muscle disorder might be.

• #11 Muscular Dystrophy – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560582/

  A definitive diagnosis of muscular dystrophy can be established through mutation analysis performed on peripheral blood leukocytes. […] Genetic testing reveals deletions or duplications of the dystrophin gene in 65% of patients with Becker dystrophy, a proportion similar to Duchenne dystrophy. […] The serum enzymes, especially CPK, are increased to more than 10 times normal, even in infancy and before the onset of weakness. […] Diagnosis is suggested (a high CPK level does not confirm the diagnosis because many other alterations can also increase CPK) by measuring the blood CPK level, which can be 100 times the normal level, with diagnostic confirmation by genetic testing for mutations in the dystrophin gene. […] Duchenne muscular dystrophy typically results in a life expectancy of around 20 years, with a fatal outcome in 100% of cases. […] Most patients succumb to cardiopulmonary failure before reaching 30.

• #12 Muscular Dystrophy – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560582/

  A definitive diagnosis of muscular dystrophy can be established through mutation analysis performed on peripheral blood leukocytes. […] Genetic testing reveals deletions or duplications of the dystrophin gene in 65% of patients with Becker dystrophy, a proportion similar to Duchenne dystrophy. […] The serum enzymes, especially CPK, are increased to more than 10 times normal, even in infancy and before the onset of weakness. […] Diagnosis is suggested (a high CPK level does not confirm the diagnosis because many other alterations can also increase CPK) by measuring the blood CPK level, which can be 100 times the normal level, with diagnostic confirmation by genetic testing for mutations in the dystrophin gene. […] Duchenne muscular dystrophy typically results in a life expectancy of around 20 years, with a fatal outcome in 100% of cases. […] Most patients succumb to cardiopulmonary failure before reaching 30.

• #13 Becker’s Muscular Dystrophy: Diagnosis and Treatment | Doctor

  https://patient.info/doctor/beckers-muscular-dystrophy

  The muscular dystrophies (MDs) are a group of inherited disorders characterised by progressive muscle wasting and weakness. […] BMD can occur as a new mutation. Therefore, not all mothers of BMD patients will be carriers of the gene. BMD can also occur through mosaicism (where only some cell lines are affected). […] Initial investigations include serum creatine kinase (CK) – shows moderate-severe increase in BMD (5-50 x normal levels). […] Genetic analysis is a further investigation for Becker’s muscular dystrophy. […] Muscle biopsy looking at dystrophin is usually helpful for diagnosis. […] Genetic tests, including X-inactivation patterns, are also part of the diagnosis process.

• #14 Clinical and Molecular Diagnosis in Muscular Dystrophies | IntechOpen

  https://www.intechopen.com/chapters/66586

  Elevated level of CK could suggest a muscle disease before symptoms of muscular dystrophy become evident. […] The level of CK has been found higher in other types of MD like limb-girdle muscular dystrophy (LGMD) and could serve as useful indicator being able to discriminate between autosomal recessive and dominant types of LGMD, knowing that CK level recessive types of MD are higher than dominant ones. […] The assessment of skeletal muscle biopsy is an essential procedure for an accurate diagnosis when a muscle disease is suspected, providing evidence of pathological changes in muscle and guides for appropriate tests. […] Even though the muscle biopsy is a highly invasive procedure, the data gained from it has the utmost importance for histopathological diagnosis and is an essential component in the diagnosis of muscle disorders that could identify the cause of the disease process and distinguish between different types of muscular dystrophy.

• #15 Muscular Dystrophy: Types, Diagnosis & ICD-10 Codes

  https://www.outsourcestrategies.com/blog/muscular-dystrophy-updated-icd-10-codes-a-guideline-for-practitioners/

  Creatine Kinase (CK) Levels: Elevated levels of CK—an enzyme released from damaged muscles, could be an indication of muscle disease, although abnormal CK is not specific to MD. […] Cardio-Respiratory Tests: Examination of heart is done to identify any irregularities, especially in patients diagnosed with myotonic muscular dystrophy. Lung examination is also performed to validate proper lung function. […] Consulting a company that offers expert medical billing services, can help gain an understanding of the forms and complexities of MD, proper diagnoses and usage of ICD-10 codes, which is crucial for healthcare providers in administering appropriate medical care.

• #16 Muscular Dystrophy – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560582/

  A definitive diagnosis of muscular dystrophy can be established through mutation analysis performed on peripheral blood leukocytes. […] Genetic testing reveals deletions or duplications of the dystrophin gene in 65% of patients with Becker dystrophy, a proportion similar to Duchenne dystrophy. […] The serum enzymes, especially CPK, are increased to more than 10 times normal, even in infancy and before the onset of weakness. […] Diagnosis is suggested (a high CPK level does not confirm the diagnosis because many other alterations can also increase CPK) by measuring the blood CPK level, which can be 100 times the normal level, with diagnostic confirmation by genetic testing for mutations in the dystrophin gene. […] Duchenne muscular dystrophy typically results in a life expectancy of around 20 years, with a fatal outcome in 100% of cases. […] Most patients succumb to cardiopulmonary failure before reaching 30.

• #17 Diagnosis of Muscular Dystrophy | Muscular Dystrophy NewsBooks iconSpeech bubble iconEnvelope icon

  https://musculardystrophynews.com/diagnosis-of-muscular-dystrophy/

  Diagnosis of Muscular Dystrophy […] Doctors can use several tests to diagnose muscular dystrophy (MD). A correct diagnosis gives patients an understanding of how their disease is likely to progress. It also helps doctors do a better job of treating the mechanisms underlying the condition and its symptoms. […] Diagnosing the more common forms of muscular dystrophy tends to be easier, because their recognizable set of symptoms is likely to prompt doctors to look for genetic defects associated with those forms. […] Blood serum samples are used to check for the levels of two enzymes known as creatine kinase and as aldolase, which can signal a muscular disorder exists and further testing is warranted. Blood samples can also be used for genetic testing. […] Magnetic resonance imaging, or MRI, gives doctors a glimpse of a patient’s muscle, fat, and bone. MD patients typically have a higher concentration of fat in their muscles. MRIs help neurologists understand which muscles the dystrophy is affecting the most. They also help doctors choose a suitable muscle for a biopsy, if needed. […] To perform a muscle biopsy, a doctor collects a small piece of muscle with a needle or by making a small cut in the skin to check the sample for muscle damage and to look at levels of different muscle proteins, certain concentrations of which can indicate MD. Low levels of dystrophin protein can indicate that a person has a form of the disease, such as Duchenne or Becker muscular dystrophies. […] Although a number of diagnostic tools can point toward MD, genetic testing is usually the most accurate way to diagnose the disease. These tests check for mutations associated with disease. Commercial genetic tests that can be used to diagnose a particular type of MD, known as direct genetic testing, are only available for some of the more common types of the disease. […] The six-minute walk test is a measure of how far a patient can walk in six minutes on a hard, flat surface. The original purpose of the test was to determine exercise tolerance in patients with heart failure and respiratory disease, but the test has been used to measure exercise capacity in other patient groups, including those with MD.

• #18 Muscular Dystrophy DiagnosisEnvelope icon

  https://musculardystrophynews.com/muscular-dystrophy-diagnosis/

  Muscular dystrophies are a group of genetic disorders that result in progressive muscle weakness. Clinicians can use several tests to help diagnose muscular dystrophy. […] A correct diagnosis gives patients an understanding of how their disease is likely to progress and helps to inform the treatments and supportive strategies used to manage the symptoms. Diagnosing the more common forms of muscular dystrophy tends to be easier because their recognizable sets of symptoms are likely to prompt doctors to look for genetic defects associated with those forms. […] Although a number of diagnostic tools can point toward muscular dystrophy, genetic testing is usually the most accurate way to diagnose the disease. […] Genetic testing involves analyzing a person’s DNA to look for mutations known to cause muscular dystrophy. It can be done to help diagnose someone who is experiencing symptoms or to identify people at risk of developing the disease or passing it to their biological children.

• #19 Get a diagnosis – Indian Association of Muscular Dystrophy (IAMD)

  https://iamd.in/muscular-dystrophy/get-a-diagnosis/

  The quality of life for an individual affected by Muscular Dystrophy can be significantly improved with early recognition and diagnosis. […] The first step is talking to your primary care doctor if you notice signs of muscle weakness such as clumsiness or falling in yourself or your child. Your doctor will start with a physical exam. […] Muscular Dystrophy is a genetic condition usually (but not always) inherited from one or both parents. It can also skip family generations. Hence the doctor will ask you about your family history and if anyone was diagnosed with Muscular Dystrophy previous and the category. […] You may also be required to undergo a number of tests such as: Blood enzyme tests Check for higher-than-normal creatine kinase (CK) levels, which may reveal inflammation or the death of muscle fibers. Creatine kinase is an enzyme thats released into the bloodstream when muscle fibers are deteriorating. Electromyography Test to measure electrical activity generated by muscle cells when they are activated by a nerve impulse. In people with Muscular Dystrophy, the muscles do not respond well to electrical stimulation. Nerve conduction tests Test to measure how well electrical impulses travel through a nerve. a slower electrical response can be a sign of Muscular Dystrophy Neurological tests Tests to measure reflexes and exercise assessment to evaluate the strength and respiratory function Muscle biopsy A small sample of muscle is removed for examination (under anesthesia). The sample is then inspected under a microscope and aids in determining the specific Muscular Dystrophy you or your child may have. In many cases the presenting symptoms, family history and muscle biopsy results can determine the specific Muscular Dystrophy. Genetic (DNA) testing This may be done alongside a muscle biopsy and aids in determining the specific mutation causing the Muscular Dystrophy. This is usually done by inspecting DNA from either from a Blood sample, cheek swab, skin biopsy or may be taken from the muscle biopsy.

• #20 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  Duchenne muscular dystrophy (DMD) is an X-linked inherited neuromuscular disorder due to mutations in the dystrophin gene. It is characterized by progressive muscle weakness and wasting due to the absence of dystrophin protein that causes degeneration of skeletal and cardiac muscle. The molecular diagnostic of DMD involves a deletions/duplications analysis performed by quantitative technique such as microarray-based comparative genomic hybridization (array-CGH), Multiple Ligation Probe Assay MLPA. […] Since traditional methods for detection of point mutations and other sequence variants require high cost and are time consuming, especially for a large gene like dystrophin, the use of next-generation sequencing (NGS) has become a useful tool available for clinical diagnosis. […] The most common molecular defect in the DMD gene is the deletion of one or more exons, occurring in 65% of DMD cases, while the duplication accounts for 6%–10% of cases. The remaining cases (approximately 25%) are due to small mutations (missense, nonsense, and splice site variations) small rearrangements (insertions/deletions, small inversion).

• #21 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  Duchenne muscular dystrophy (DMD) is an X-linked inherited neuromuscular disorder due to mutations in the dystrophin gene. It is characterized by progressive muscle weakness and wasting due to the absence of dystrophin protein that causes degeneration of skeletal and cardiac muscle. The molecular diagnostic of DMD involves a deletions/duplications analysis performed by quantitative technique such as microarray-based comparative genomic hybridization (array-CGH), Multiple Ligation Probe Assay MLPA. […] Since traditional methods for detection of point mutations and other sequence variants require high cost and are time consuming, especially for a large gene like dystrophin, the use of next-generation sequencing (NGS) has become a useful tool available for clinical diagnosis. […] The most common molecular defect in the DMD gene is the deletion of one or more exons, occurring in 65% of DMD cases, while the duplication accounts for 6%–10% of cases. The remaining cases (approximately 25%) are due to small mutations (missense, nonsense, and splice site variations) small rearrangements (insertions/deletions, small inversion).

• #22 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  Duchenne muscular dystrophy (DMD) is an X-linked inherited neuromuscular disorder due to mutations in the dystrophin gene. It is characterized by progressive muscle weakness and wasting due to the absence of dystrophin protein that causes degeneration of skeletal and cardiac muscle. The molecular diagnostic of DMD involves a deletions/duplications analysis performed by quantitative technique such as microarray-based comparative genomic hybridization (array-CGH), Multiple Ligation Probe Assay MLPA. […] Since traditional methods for detection of point mutations and other sequence variants require high cost and are time consuming, especially for a large gene like dystrophin, the use of next-generation sequencing (NGS) has become a useful tool available for clinical diagnosis. […] The most common molecular defect in the DMD gene is the deletion of one or more exons, occurring in 65% of DMD cases, while the duplication accounts for 6%–10% of cases. The remaining cases (approximately 25%) are due to small mutations (missense, nonsense, and splice site variations) small rearrangements (insertions/deletions, small inversion).

• #23 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  The minimum level of diagnostic testing is designed for quantitative analysis of DMD genes to identify the majority changes of DMD gene, that are exons deletion or duplication, followed by qualitative approach represented by full gene sequencing. […] Among the quantitative methods available, multiplex ligation-dependent probe amplification (MLPA) is currently the most widely used. […] Another quantitative full-gene approach, which investigates the presence of CNVs in the entire genomic region of the DMD gene, is the oligonucleotide-based array comparative genomic hybridization (CGH). […] The qualitative analysis is represented by sequencing of the entire coding region of DMD gene in order to detect small mutations (small deletion or insertion, single base change, and splicing mutation).

• #24 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  The minimum level of diagnostic testing is designed for quantitative analysis of DMD genes to identify the majority changes of DMD gene, that are exons deletion or duplication, followed by qualitative approach represented by full gene sequencing. […] Among the quantitative methods available, multiplex ligation-dependent probe amplification (MLPA) is currently the most widely used. […] Another quantitative full-gene approach, which investigates the presence of CNVs in the entire genomic region of the DMD gene, is the oligonucleotide-based array comparative genomic hybridization (CGH). […] The qualitative analysis is represented by sequencing of the entire coding region of DMD gene in order to detect small mutations (small deletion or insertion, single base change, and splicing mutation).

• #25 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  The minimum level of diagnostic testing is designed for quantitative analysis of DMD genes to identify the majority changes of DMD gene, that are exons deletion or duplication, followed by qualitative approach represented by full gene sequencing. […] Among the quantitative methods available, multiplex ligation-dependent probe amplification (MLPA) is currently the most widely used. […] Another quantitative full-gene approach, which investigates the presence of CNVs in the entire genomic region of the DMD gene, is the oligonucleotide-based array comparative genomic hybridization (CGH). […] The qualitative analysis is represented by sequencing of the entire coding region of DMD gene in order to detect small mutations (small deletion or insertion, single base change, and splicing mutation).

• #26 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  The minimum level of diagnostic testing is designed for quantitative analysis of DMD genes to identify the majority changes of DMD gene, that are exons deletion or duplication, followed by qualitative approach represented by full gene sequencing. […] Among the quantitative methods available, multiplex ligation-dependent probe amplification (MLPA) is currently the most widely used. […] Another quantitative full-gene approach, which investigates the presence of CNVs in the entire genomic region of the DMD gene, is the oligonucleotide-based array comparative genomic hybridization (CGH). […] The qualitative analysis is represented by sequencing of the entire coding region of DMD gene in order to detect small mutations (small deletion or insertion, single base change, and splicing mutation).

• #27 Duchenne Muscular Dystrophy: From Diagnosis to Therapy

  https://www.mdpi.com/1420-3049/20/10/18168

  A variety of technologies named next generation sequencing (NGS) emerged, each with a unique biochemical strategy. NGS introduced the concept of sequencing millions of copies of the DNA fragments simultaneously, increasing DNA sequencing output and reducing the time and cost necessary to fulfill the genetic diagnosis. […] To summarize, the optimum procedures for DMD molecular diagnosis consist in quantitative analysis, to detect CNVs, followed by genomic sequencing or alternatively by NGS strategy. If this is still negative, transcript analysis should be performed to identify the genotype in the low percentage of undiagnosed patients.

• #28 Genetic diagnosis of Duchenne/Becker muscular dystrophy using next-generation sequencing: validation analysis of DMD mutations | Journal of Human Genetics

  https://www.nature.com/articles/jhg20167

  Recently, next-generation sequencing (NGS) approaches have become major tools for finding the causative genes for diseases. […] In this study, we established the clinical utility of Ion Torrent sequencing technology for the detection of deletions/duplications and small mutations in DMD by comparison with the conventional method, MLPA and Sanger sequencing in the large number of the DMD/BMD patients in the Japanese cohort. […] Given the difficulty in interpreting certain large duplications and insertions, MLPA or Sanger sequencing may be required to complement Ion PGM in some cases. Nonetheless, a single genetic test that could give a precise genetic diagnosis to more patients would be preferable, saving time and money for the patients. Accordingly, we estimate that 92% of DMD/BMD patients are accurately diagnosed using the Ion PGM. […] This is the first study to show the utility of Ion PGM to detect both deletions/duplications and small mutations in DMD/BMD patients.

• #29

  https://www.nhs.uk/conditions/muscular-dystrophy/diagnosis/

  A muscle biopsy involves removing a small sample of muscle tissue through a small cut (incision), or using a hollow needle, so it can be examined under a microscope and tested for proteins. […] Analysing the protein in the muscle can help to determine which gene is causing MD and therefore which type of MD you have. […] A number of other tests can be used to find out more about the spread and extent of any muscle damage. This will help your doctor to identify or confirm which type of MD you have. […] Once the doctor usually a geneticist or neurologist has an idea about what type of MD may be affecting you or your child, they may arrange genetic testing to look into this. […] Genetic testing can sometimes confirm a diagnosis.

• #30 Duchenne Muscular Dystrophy: Symptoms and Treatment | Doctor

  https://patient.info/doctor/duchenne-muscular-dystrophy-pro

  Assessment and diagnosis – general points: Awareness: consider DMD in any boy who is not walking by 18 months, who has delayed motor milestones or global developmental delay. Aim to make the diagnosis early, to allow genetic counselling for the family – important if parents are considering another pregnancy. NB: it is important to watch the child running and rising from the floor. Look for a waddling gait and Gower’s sign. This is more useful than formal examination in a young child. Remember that DMD is a devastating diagnosis – follow good practice for disclosing bad news. […] Diagnosing Duchenne muscular dystrophy (investigation): The initial investigation is serum creatine kinase (CK): In DMD the CK level is very high (10-100 x normal from birth). A normal CK at presentation excludes DMD. However, later on CK levels fall due to muscle wasting; therefore, it is not reliable as a screening test in those who are already wheelchair users. The precise diagnosis is best achieved by a combination of: Genetic analysis – can identify most (but not all) of the DMD mutations. Muscle biopsy – with assay for dystrophin protein. Clinical observation of muscle strength and function. Genetic testing after a positive biopsy diagnosis of DMD is mandatory. A muscle biopsy is not necessary if a genetic diagnosis is already known. However, if genetic testing has been done and no mutation identified, but CK concentrations are increased and signs or symptoms consistent with DMD are present, the next necessary diagnostic step is to do a muscle biopsy. This is also the case if there is a family history of DMD and a suspicion of the diagnosis but no family mutation known. […] Diagnosis: Muscle biopsy looking at dystrophin is usually helpful. Genetic tests, including X-inactivation patterns.

• #31 Muscular dystrophy – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/diagnosis-treatment/drc-20375394

  Your doctor is likely to start with a medical history and physical examination. […] After that, your doctor might recommend: […] Enzyme tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. In a person who hasn’t had a traumatic injury, high blood levels of creatine kinase (CK) suggest a muscle disease. […] Genetic testing. Blood samples can be examined for mutations in some of the genes that cause types of muscular dystrophy. […] Muscle biopsy. A small piece of muscle can be removed through an incision or with a hollow needle. Analysis of the tissue sample can distinguish muscular dystrophies from other muscle diseases. […] Heart-monitoring tests (electrocardiography and echocardiogram). These tests are used to check heart function, especially in people diagnosed with myotonic muscular dystrophy.

• #32 Diagnosis – Duchenne Muscular Dystrophy (DMD) – Diseases | Muscular Dystrophy Association

  https://www.mda.org/disease/duchenne-muscular-dystrophy/diagnosis

  Usually genetic diagnosis is indicated for patients with elevated serum CK levels and clinical findings of dystrophinopathy. Diagnosis is confirmed if a mutation of the DMD gene is identified. […] To obtain more information, a doctor may order a muscle biopsy, the surgical removal of a small sample of muscle from the patient. By examining this sample, doctors can tell a great deal about whats actually happening inside the muscles. However, muscle biopsy is seldom needed in the modern era because nearly all patients are diagnosed with genetic testing. […] If the suspicion of DMD remains high despite negative genetic analysis, dystrophin detection by western blot technique or staining with selective antibodies is carried out in the tissue derived from a muscle biopsy. The western blot is useful to predict the severity of the disease as the quantity of dystrophin present in the analysis is related to the clinical presentation.

• #33 Patient education: Overview of muscular dystrophies (Beyond the Basics) – UpToDate

  https://www.uptodate.com/contents/overview-of-muscular-dystrophies-beyond-the-basics

  A muscle biopsy is a procedure that removes one or more small piece(s) of muscle from either an arm or leg. Muscle biopsies can sometimes provide a specific diagnosis. However, muscle biopsies are done less frequently than previously because of the increased availability of genetic testing. […] Duchenne muscular dystrophy (DMD) is caused by a defect in the DMD gene located on the X chromosome. This gene is responsible for producing a protein called dystrophin, which normally functions to protect muscle fibers. […] Symptoms of DMD usually appear in children between age two and three years. […] Early identification of children who are affected by DMD is important to prevent complications and prolong life. […] Glucocorticoids (prednisone or deflazacort) are the primary treatment for DMD and are generally offered to boys who are over the age of five years.

• #34 Diagnosis – Lee HealthCare

  https://leehealthcare.com/resource-center/health-issue-muscular-dystrophy/diagnosis/

  Muscle biopsy. A small piece of muscle is taken for laboratory analysis. The analysis distinguishes muscular dystrophies from other muscle diseases. Special tests can identify dystrophin and other markers associated with specific forms of muscular dystrophy. […] Genetic testing. Blood samples are examined for mutations in some of the genes that cause different types of muscular dystrophy. For Duchennes and Beckers muscular dystrophies, standard tests examine just the portions of the dystrophin gene responsible for most cases of these types of MD. These tests identify deletions or duplications on the dystrophin gene in more than two-thirds of people with Duchennes and Beckers MDs. The genetic defects responsible for Duchennes and Beckers muscular dystrophies are harder to identify in other cases of those affected, but new tests that examine the entire dystrophin gene are making it possible to pinpoint tiny, less common mutations.

• #35 Clinical and Molecular Diagnosis in Muscular Dystrophies | IntechOpen

  https://www.intechopen.com/chapters/66586

  The presence of clinical symptoms in a male child presented in Cap 2.1 along with increased serum levels of CK, transaminase enzymes or aldolase should trigger the diagnostic investigation for dystrophinopathies. […] When DMD or BMD is suspected, diagnostic recommendation as first investigation is the screening of DMD gene for deletions and duplications by MLPA. […] If no deletions and duplication are identified, the DMD gene should be investigated for point mutations by hrMCA followed by sequencing of exons with a modification of melting curve only. […] If a muscle biopsy is the tool of choice as first step in analysis routine, histochemical staining and dystrophin analysis by immunohistochemistry/immunofluorescence and Western blot confirm or not the dystrophinopathies diagnosis based on the difference in the expression of dystrophin.

• #36 Clinical and Molecular Diagnosis in Muscular Dystrophies | IntechOpen

  https://www.intechopen.com/chapters/66586

  The study of muscle protein expression is important for diagnosis, for genotype-phenotype correlations, and to identify possible genetic defect. […] The development of specific antibodies (Abs) for affected proteins has improved the diagnosis for these diseases, over time. […] Western blot has the advantage of simultaneous analysis of several proteins which reduced cost and time for analysis. This method is useful in differential diagnosis of muscular dystrophies providing information on the relative location of mutation. […] The identification and characterization of genetic defect involved in pathology is often essential both for diagnosis and treatment options as well as in predicting disease prognosis. […] The great technological advances in molecular assays over the last 20 years have led to the identification of the molecular genetic cause for many forms of muscular dystrophy.

• #37 Muscular Dystrophy Diagnosis & Treatment

  https://www.webmd.com/children/understanding-muscular-dystrophy-treatment

  Muscular dystrophy (MD) is diagnosed through a physical exam, a family medical history, and tests. These might include: […] For Duchenne and Becker muscular dystrophies, muscle biopsy may show whether dystrophin, a muscle protein, is missing or abnormal, and DNA testing is used to analyze the condition of the related gene.

• #38 Diagnosis – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/about-duchenne/is-it-duchenne/diagnosis/

  Having an accurate, timely diagnosis is a critical aspect of care. There are reliable tests to help confirm the diagnosis of a person with Duchenne. The following tests are typically used to confirm a preliminary diagnosis. […] If you/your child have an elevated CK test, your doctor should offer you testing that can give a diagnosis. The two types of tests that are used to make a diagnosis are genetic testing and muscle biopsy. […] Genetic testing (using blood cells or muscle cells) is the best way to obtain exact genetic information for a conclusive Duchenne diagnosis. DNA-based genetic testing is used to find mutations (changes) in the gene that Duchenne. […] If genetic testing is not able to accurately provide a diagnosis, a muscle biopsy should be performed. A muscle biopsy (a surgical procedure that involves taking a small sample of muscle for analysis) looks for changes in the amount and look of dystrophin protein, and is usually done by immunohistochemistry of slides of the muscle or by a Western blot test of the muscle protein. This type of testing can usually tell whether a person has Duchenne or Becker muscular dystrophy.

• #39 Muscular dystrophy – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/diagnosis-treatment/drc-20375394

  Lung-monitoring tests. These tests are used to check lung function. […] Electromyography. An electrode needle is inserted into the muscle to be tested. Electrical activity is measured as you relax and as you gently tighten the muscle. Changes in the pattern of electrical activity can confirm a muscle disease.

• #40 Diagnosis – Lee HealthCare

  https://leehealthcare.com/resource-center/health-issue-muscular-dystrophy/diagnosis/

  A careful review of your familys history of muscle disease can help your doctor reach a diagnosis. […] In addition to a medical history review and physical examination, your doctor may rely on the following in diagnosing muscular dystrophy: […] Blood tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. High blood levels of CK suggest a muscle disease, such as muscular dystrophy. […] Electromyography. A thin-needle electrode is inserted through your skin into the muscle to be tested. Electrical activity is measured as you relax and as you gently tighten the muscle. Changes in the pattern of electrical activity can confirm a muscle disease. The distribution of the disease can be determined by testing different muscles. […] Ultrasonography. High-frequency sound waves are used to produce precise images of tissues and structures within your body. An ultrasound is a noninvasive way of detecting certain muscle abnormalities, even in the early stages of the disease.

• #41 Diagnosing Muscular Dystrophy | NYU Langone Health

  https://nyulangone.org/conditions/muscular-dystrophy/diagnosis

  The results of EMG testing can help doctors distinguish between conditions that begin in the muscle and nerve disorders that mimic muscular dystrophy. […] A doctor may also perform a nerve conduction study to determine if there is any nerve damage. […] A slower electrical response in the muscles can indicate muscular dystrophy. […] The results of genetic testing can help to confirm or rule out a diagnosis of muscular dystrophy. […] If genetic testing is unable to identify the type of muscular dystrophy, the doctor may recommend a muscle biopsy. […] An examination of this sample can help the doctor to distinguish between the presence of muscular dystrophy and other inflammatory disorders, such as polymyositis and dermatomyositis, and to possibly determine which type of muscular dystrophy is causing your symptoms. […] NYU Langone doctors use the results of these diagnostic tests to create a customized care plan that helps you to manage muscular dystrophy symptoms throughout your life.

• #42 Diagnosing Muscular Dystrophy | NYU Langone Health

  https://nyulangone.org/conditions/muscular-dystrophy/diagnosis

  The results of EMG testing can help doctors distinguish between conditions that begin in the muscle and nerve disorders that mimic muscular dystrophy. […] A doctor may also perform a nerve conduction study to determine if there is any nerve damage. […] A slower electrical response in the muscles can indicate muscular dystrophy. […] The results of genetic testing can help to confirm or rule out a diagnosis of muscular dystrophy. […] If genetic testing is unable to identify the type of muscular dystrophy, the doctor may recommend a muscle biopsy. […] An examination of this sample can help the doctor to distinguish between the presence of muscular dystrophy and other inflammatory disorders, such as polymyositis and dermatomyositis, and to possibly determine which type of muscular dystrophy is causing your symptoms. […] NYU Langone doctors use the results of these diagnostic tests to create a customized care plan that helps you to manage muscular dystrophy symptoms throughout your life.

• #43 Muscular Dystrophy DiagnosisEnvelope icon

  https://musculardystrophynews.com/muscular-dystrophy-diagnosis/

  Often one of the first tests done when muscular dystrophy is suspected is to look for markers of muscle damage, such as creatinine kinase and aldolase, in the blood. Elevated levels of these proteins suggest muscle damage, and muscular dystrophy patients typically have levels well above what is normal, especially in earlier stages of disease. […] Electromyography (EMG) is a diagnostic procedure that measures the electrical activity in muscles. […] EMG is often done at the same time as a similar test called a nerve conduction study. This procedure is done with electrodes placed on the skin, and as its name suggests, it measures electrical activity in nerve cells. Doing both procedures can be useful for determining whether muscle weakness is caused by problems with nerves or with muscles.

• #44 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  Genetic testing to look for genes known either to cause or be associated with inherited muscle disease. DNA analysis and enzyme assays can confirm the diagnosis of certain neuromuscular diseases, including MD. […] Neurological tests to rule out other nervous system disorders, identify patterns of muscle weakness and wasting, test reflexes and coordination, and detect contractions. […] Heart testing, such as an electrocardiogram (ECG), to measure the rate and frequency of heartbeats, or echocardiogram (Echo), to measure the force of heartbeats and look at the structure of the heart. Some forms of MD cause heart problems such as an irregular heartbeat. […] Exercise assessments to measure the patients muscle strength and breathing and detect any increased rates of certain markers following exercise. […] Imaging tests such as magnetic resonance imaging (MRI) and ultrasound imaging, which use radio waves/magnetic fields and sound waves, respectively, to take pictures of the inside of the body, examine muscle quality and bulk, and measure fatty replacement of muscle tissue.

• #45 Diagnosis of Muscular Dystrophy | Muscular Dystrophy NewsBooks iconSpeech bubble iconEnvelope icon

  https://musculardystrophynews.com/diagnosis-of-muscular-dystrophy/

  Diagnosis of Muscular Dystrophy […] Doctors can use several tests to diagnose muscular dystrophy (MD). A correct diagnosis gives patients an understanding of how their disease is likely to progress. It also helps doctors do a better job of treating the mechanisms underlying the condition and its symptoms. […] Diagnosing the more common forms of muscular dystrophy tends to be easier, because their recognizable set of symptoms is likely to prompt doctors to look for genetic defects associated with those forms. […] Blood serum samples are used to check for the levels of two enzymes known as creatine kinase and as aldolase, which can signal a muscular disorder exists and further testing is warranted. Blood samples can also be used for genetic testing. […] Magnetic resonance imaging, or MRI, gives doctors a glimpse of a patient’s muscle, fat, and bone. MD patients typically have a higher concentration of fat in their muscles. MRIs help neurologists understand which muscles the dystrophy is affecting the most. They also help doctors choose a suitable muscle for a biopsy, if needed. […] To perform a muscle biopsy, a doctor collects a small piece of muscle with a needle or by making a small cut in the skin to check the sample for muscle damage and to look at levels of different muscle proteins, certain concentrations of which can indicate MD. Low levels of dystrophin protein can indicate that a person has a form of the disease, such as Duchenne or Becker muscular dystrophies. […] Although a number of diagnostic tools can point toward MD, genetic testing is usually the most accurate way to diagnose the disease. These tests check for mutations associated with disease. Commercial genetic tests that can be used to diagnose a particular type of MD, known as direct genetic testing, are only available for some of the more common types of the disease. […] The six-minute walk test is a measure of how far a patient can walk in six minutes on a hard, flat surface. The original purpose of the test was to determine exercise tolerance in patients with heart failure and respiratory disease, but the test has been used to measure exercise capacity in other patient groups, including those with MD.

• #46 Getting diagnosed with a muscle wasting condition – Muscular Dystrophy UK

  https://www.musculardystrophyuk.org/support/information/your-condition/diagnostic-tests/

  People with a suspected neuromuscular condition usually have their blood tested to check their creatine kinase (CK) levels. This is also called the CPK test. They may also have a blood test for genetic testing which can help to identify the cause of their symptoms. […] An MRI scan can highlight which muscles are affected by a condition and can help to identify the most suitable muscle on which to perform a biopsy. […] A muscle biopsy is when a small piece of muscle is removed through a small cut or with a hollow needle. This will usually be from the leg or arm. The tissue sample enables clinicians to examine the muscle structure in detail, under a microscope. […] The results of clinical tests can help clinicians reach a diagnosis, however genetic testing can often provide a more precise diagnosis. Having a precise diagnosis can mean better access to treatment and better management of your condition.

• #47 Muscular Dystrophy DiagnosisEnvelope icon

  https://musculardystrophynews.com/muscular-dystrophy-diagnosis/

  Magnetic resonance imaging, or MRI, is a technique that uses a magnetic field and radio waves to produce detailed images of the inside of the body. […] A muscle biopsy is when clinicians remove a small piece of muscle tissue, which is then sent to a laboratory for analysis. These analyses can help to identify biochemical and physical changes in muscle cells that are indicative of muscular dystrophy, and they can aid in ruling out other conditions. […] The six-minute walk test (sometimes abbreviated 6MWT) is simply a measure of how far a person is able to walk in six minutes on a flat, hard surface. This test is commonly used to assess physical function and exercise capacity in individuals who are able to walk and may be useful for monitoring changes in function over time.

• #48 Diagnosis – Lee HealthCare

  https://leehealthcare.com/resource-center/health-issue-muscular-dystrophy/diagnosis/

  A careful review of your familys history of muscle disease can help your doctor reach a diagnosis. […] In addition to a medical history review and physical examination, your doctor may rely on the following in diagnosing muscular dystrophy: […] Blood tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. High blood levels of CK suggest a muscle disease, such as muscular dystrophy. […] Electromyography. A thin-needle electrode is inserted through your skin into the muscle to be tested. Electrical activity is measured as you relax and as you gently tighten the muscle. Changes in the pattern of electrical activity can confirm a muscle disease. The distribution of the disease can be determined by testing different muscles. […] Ultrasonography. High-frequency sound waves are used to produce precise images of tissues and structures within your body. An ultrasound is a noninvasive way of detecting certain muscle abnormalities, even in the early stages of the disease.

• #49 Muscular dystrophy – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/diagnosis-treatment/drc-20375394

  Your doctor is likely to start with a medical history and physical examination. […] After that, your doctor might recommend: […] Enzyme tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. In a person who hasn’t had a traumatic injury, high blood levels of creatine kinase (CK) suggest a muscle disease. […] Genetic testing. Blood samples can be examined for mutations in some of the genes that cause types of muscular dystrophy. […] Muscle biopsy. A small piece of muscle can be removed through an incision or with a hollow needle. Analysis of the tissue sample can distinguish muscular dystrophies from other muscle diseases. […] Heart-monitoring tests (electrocardiography and echocardiogram). These tests are used to check heart function, especially in people diagnosed with myotonic muscular dystrophy.

• #50 Muscular dystrophy – Diagnosis & treatment – Mayo Clinic

  https://www.mayoclinic.org/diseases-conditions/muscular-dystrophy/diagnosis-treatment/drc-20375394

  Your doctor is likely to start with a medical history and physical examination. […] After that, your doctor might recommend: […] Enzyme tests. Damaged muscles release enzymes, such as creatine kinase (CK), into your blood. In a person who hasn’t had a traumatic injury, high blood levels of creatine kinase (CK) suggest a muscle disease. […] Genetic testing. Blood samples can be examined for mutations in some of the genes that cause types of muscular dystrophy. […] Muscle biopsy. A small piece of muscle can be removed through an incision or with a hollow needle. Analysis of the tissue sample can distinguish muscular dystrophies from other muscle diseases. […] Heart-monitoring tests (electrocardiography and echocardiogram). These tests are used to check heart function, especially in people diagnosed with myotonic muscular dystrophy.

• #51 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  Genetic testing to look for genes known either to cause or be associated with inherited muscle disease. DNA analysis and enzyme assays can confirm the diagnosis of certain neuromuscular diseases, including MD. […] Neurological tests to rule out other nervous system disorders, identify patterns of muscle weakness and wasting, test reflexes and coordination, and detect contractions. […] Heart testing, such as an electrocardiogram (ECG), to measure the rate and frequency of heartbeats, or echocardiogram (Echo), to measure the force of heartbeats and look at the structure of the heart. Some forms of MD cause heart problems such as an irregular heartbeat. […] Exercise assessments to measure the patients muscle strength and breathing and detect any increased rates of certain markers following exercise. […] Imaging tests such as magnetic resonance imaging (MRI) and ultrasound imaging, which use radio waves/magnetic fields and sound waves, respectively, to take pictures of the inside of the body, examine muscle quality and bulk, and measure fatty replacement of muscle tissue.

• #52 Adult and Adolescent Onset Muscular Dystrophies Part 1: Evaluation and Diagnosis | PM&R KnowledgeNow

  https://now.aapmr.org/adult-and-adolescent-onset-muscular-dystrophies-evaluation-and-diagnosis/

  Muscle biopsy is less specific but can at least categorize the type of neuromuscular disease. […] Molecular genetic studies are more specific and are available for EDMD, FSHD, and LGMD. […] Evaluation for cardiac pathology with tests such as electrocardiogram, Holter monitor, or echocardiogram is also used to monitor for the development of treatable conduction defects, arrhythmias and cardiomyopathies that are associated with some MDs.

• #53 Adult and Adolescent Onset Muscular Dystrophies Part 1: Evaluation and Diagnosis | PM&R KnowledgeNow

  https://now.aapmr.org/adult-and-adolescent-onset-muscular-dystrophies-evaluation-and-diagnosis/

  Adult and adolescent onset muscular dystrophies (MDs) are characterized by progressive muscle weakness and loss of muscle mass with degeneration or degeneration/regeneration due to mutations in one or more genes which code for proteins required for normal muscle function, structural support and homeostasis. […] Diagnosis of early onset conditions may be delayed, sometimes remarkably so; a recent case of FSHD presented as a Case Record of the Massachusetts General hospital went undiagnosed until age 80. […] A detailed family history is essential, as affected family members can confirm the inherited nature of the disease, and the inheritance pattern will help to refine the differential diagnosis. […] A number of tools which can be divided into general and specific diagnostic studies are used to diagnose muscular dystrophy, including genetic testing, blood tests that identify signs of muscle damage, electrodiagnostic studies (EDX), muscle biopsy, pulmonary function tests or spirometry (PFT) electrocardiogram (ECG), and/or echocardiogram (ECHO).

• #54 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  Genetic testing to look for genes known either to cause or be associated with inherited muscle disease. DNA analysis and enzyme assays can confirm the diagnosis of certain neuromuscular diseases, including MD. […] Neurological tests to rule out other nervous system disorders, identify patterns of muscle weakness and wasting, test reflexes and coordination, and detect contractions. […] Heart testing, such as an electrocardiogram (ECG), to measure the rate and frequency of heartbeats, or echocardiogram (Echo), to measure the force of heartbeats and look at the structure of the heart. Some forms of MD cause heart problems such as an irregular heartbeat. […] Exercise assessments to measure the patients muscle strength and breathing and detect any increased rates of certain markers following exercise. […] Imaging tests such as magnetic resonance imaging (MRI) and ultrasound imaging, which use radio waves/magnetic fields and sound waves, respectively, to take pictures of the inside of the body, examine muscle quality and bulk, and measure fatty replacement of muscle tissue.

• #55 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  Genetic testing to look for genes known either to cause or be associated with inherited muscle disease. DNA analysis and enzyme assays can confirm the diagnosis of certain neuromuscular diseases, including MD. […] Neurological tests to rule out other nervous system disorders, identify patterns of muscle weakness and wasting, test reflexes and coordination, and detect contractions. […] Heart testing, such as an electrocardiogram (ECG), to measure the rate and frequency of heartbeats, or echocardiogram (Echo), to measure the force of heartbeats and look at the structure of the heart. Some forms of MD cause heart problems such as an irregular heartbeat. […] Exercise assessments to measure the patients muscle strength and breathing and detect any increased rates of certain markers following exercise. […] Imaging tests such as magnetic resonance imaging (MRI) and ultrasound imaging, which use radio waves/magnetic fields and sound waves, respectively, to take pictures of the inside of the body, examine muscle quality and bulk, and measure fatty replacement of muscle tissue.

• #56 Diagnosis of Muscular Dystrophy | Muscular Dystrophy NewsBooks iconSpeech bubble iconEnvelope icon

  https://musculardystrophynews.com/diagnosis-of-muscular-dystrophy/

  Diagnosis of Muscular Dystrophy […] Doctors can use several tests to diagnose muscular dystrophy (MD). A correct diagnosis gives patients an understanding of how their disease is likely to progress. It also helps doctors do a better job of treating the mechanisms underlying the condition and its symptoms. […] Diagnosing the more common forms of muscular dystrophy tends to be easier, because their recognizable set of symptoms is likely to prompt doctors to look for genetic defects associated with those forms. […] Blood serum samples are used to check for the levels of two enzymes known as creatine kinase and as aldolase, which can signal a muscular disorder exists and further testing is warranted. Blood samples can also be used for genetic testing. […] Magnetic resonance imaging, or MRI, gives doctors a glimpse of a patient’s muscle, fat, and bone. MD patients typically have a higher concentration of fat in their muscles. MRIs help neurologists understand which muscles the dystrophy is affecting the most. They also help doctors choose a suitable muscle for a biopsy, if needed. […] To perform a muscle biopsy, a doctor collects a small piece of muscle with a needle or by making a small cut in the skin to check the sample for muscle damage and to look at levels of different muscle proteins, certain concentrations of which can indicate MD. Low levels of dystrophin protein can indicate that a person has a form of the disease, such as Duchenne or Becker muscular dystrophies. […] Although a number of diagnostic tools can point toward MD, genetic testing is usually the most accurate way to diagnose the disease. These tests check for mutations associated with disease. Commercial genetic tests that can be used to diagnose a particular type of MD, known as direct genetic testing, are only available for some of the more common types of the disease. […] The six-minute walk test is a measure of how far a patient can walk in six minutes on a hard, flat surface. The original purpose of the test was to determine exercise tolerance in patients with heart failure and respiratory disease, but the test has been used to measure exercise capacity in other patient groups, including those with MD.

• #57 Muscular Dystrophy DiagnosisEnvelope icon

  https://musculardystrophynews.com/muscular-dystrophy-diagnosis/

  Magnetic resonance imaging, or MRI, is a technique that uses a magnetic field and radio waves to produce detailed images of the inside of the body. […] A muscle biopsy is when clinicians remove a small piece of muscle tissue, which is then sent to a laboratory for analysis. These analyses can help to identify biochemical and physical changes in muscle cells that are indicative of muscular dystrophy, and they can aid in ruling out other conditions. […] The six-minute walk test (sometimes abbreviated 6MWT) is simply a measure of how far a person is able to walk in six minutes on a flat, hard surface. This test is commonly used to assess physical function and exercise capacity in individuals who are able to walk and may be useful for monitoring changes in function over time.

• #58 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  Genetic testing to look for genes known either to cause or be associated with inherited muscle disease. DNA analysis and enzyme assays can confirm the diagnosis of certain neuromuscular diseases, including MD. […] Neurological tests to rule out other nervous system disorders, identify patterns of muscle weakness and wasting, test reflexes and coordination, and detect contractions. […] Heart testing, such as an electrocardiogram (ECG), to measure the rate and frequency of heartbeats, or echocardiogram (Echo), to measure the force of heartbeats and look at the structure of the heart. Some forms of MD cause heart problems such as an irregular heartbeat. […] Exercise assessments to measure the patients muscle strength and breathing and detect any increased rates of certain markers following exercise. […] Imaging tests such as magnetic resonance imaging (MRI) and ultrasound imaging, which use radio waves/magnetic fields and sound waves, respectively, to take pictures of the inside of the body, examine muscle quality and bulk, and measure fatty replacement of muscle tissue.

• #59 Duchenne Muscular Dystrophy Diagnosis: How to Identify DMD

  https://www.everydayhealth.com/genetic-diseases/duchenne-muscular-dystrophy-diagnosis/

  Duchenne muscular dystrophy (DMD) is one of the most severe forms of inherited muscular dystrophy. […] Although theres no cure for DMD, early diagnosis can help ensure timely access to treatment, counseling, and screening for complications, slowing disease progression and improving quality of life. […] While the symptoms observed by parents or other adults provide clues that a child has Duchenne, an accurate diagnosis requires a physical examination from a doctor, as well as testing. […] By having a patient complete a short walking test, move from a lying down position to a standing one, and climb up and down a few stairs, a medical professional may observe symptoms and establish the level of muscle performance and disease progression. […] After evaluating symptoms that may suggest Duchenne, physicians will typically turn to lab tests that can confirm the diagnosis:

• #60 Diagnosing Muscular Dystrophy | NYU Langone Health

  https://nyulangone.org/conditions/muscular-dystrophy/diagnosis

  The results of EMG testing can help doctors distinguish between conditions that begin in the muscle and nerve disorders that mimic muscular dystrophy. […] A doctor may also perform a nerve conduction study to determine if there is any nerve damage. […] A slower electrical response in the muscles can indicate muscular dystrophy. […] The results of genetic testing can help to confirm or rule out a diagnosis of muscular dystrophy. […] If genetic testing is unable to identify the type of muscular dystrophy, the doctor may recommend a muscle biopsy. […] An examination of this sample can help the doctor to distinguish between the presence of muscular dystrophy and other inflammatory disorders, such as polymyositis and dermatomyositis, and to possibly determine which type of muscular dystrophy is causing your symptoms. […] NYU Langone doctors use the results of these diagnostic tests to create a customized care plan that helps you to manage muscular dystrophy symptoms throughout your life.

• #61 Muscular Dystrophy DiagnosisEnvelope icon

  https://musculardystrophynews.com/muscular-dystrophy-diagnosis/

  Often one of the first tests done when muscular dystrophy is suspected is to look for markers of muscle damage, such as creatinine kinase and aldolase, in the blood. Elevated levels of these proteins suggest muscle damage, and muscular dystrophy patients typically have levels well above what is normal, especially in earlier stages of disease. […] Electromyography (EMG) is a diagnostic procedure that measures the electrical activity in muscles. […] EMG is often done at the same time as a similar test called a nerve conduction study. This procedure is done with electrodes placed on the skin, and as its name suggests, it measures electrical activity in nerve cells. Doing both procedures can be useful for determining whether muscle weakness is caused by problems with nerves or with muscles.

• #62 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  The first step in diagnosing MD is a visit with a healthcare provider for a physical exam. He or she will ask a series of questions about the persons family history, including any family members with MD, and medical history, such as muscle problems the person may be experiencing. […] Different tests can help healthcare providers diagnose MD and determine which type of MD is present. The tests also may rule out other problems that could cause muscle weakness, such as injury, toxic exposure, medications, or other muscle diseases. These tests may include: […] Blood tests to measure levels of certain substances that may be high in someone with MD. Elevated levels of these substances can signal muscle weakness, injury, and disease and point to a need for additional testing. […] Muscle biopsies, which involve the removal of a small piece of muscle tissue using a needle or small incision. Providers examine the tissue under a microscope to check for hallmarks of MD. Patients diagnosed by muscle biopsy usually need genetic testing as well to confirm mutations in their genes.

• #63 Adult and Adolescent Onset Muscular Dystrophies Part 1: Evaluation and Diagnosis | PM&R KnowledgeNow

  https://now.aapmr.org/adult-and-adolescent-onset-muscular-dystrophies-evaluation-and-diagnosis/

  Muscle biopsy is less specific but can at least categorize the type of neuromuscular disease. […] Molecular genetic studies are more specific and are available for EDMD, FSHD, and LGMD. […] Evaluation for cardiac pathology with tests such as electrocardiogram, Holter monitor, or echocardiogram is also used to monitor for the development of treatable conduction defects, arrhythmias and cardiomyopathies that are associated with some MDs.

• #64 How is muscular dystrophy (MD) diagnosed? | NICHD – Eunice Kennedy Shriver National Institute of Child Health and Human Development

  http://www.nichd.nih.gov/health/topics/musculardys/conditioninfo/diagnosed

  The first step in diagnosing MD is a visit with a healthcare provider for a physical exam. He or she will ask a series of questions about the persons family history, including any family members with MD, and medical history, such as muscle problems the person may be experiencing. […] Different tests can help healthcare providers diagnose MD and determine which type of MD is present. The tests also may rule out other problems that could cause muscle weakness, such as injury, toxic exposure, medications, or other muscle diseases. These tests may include: […] Blood tests to measure levels of certain substances that may be high in someone with MD. Elevated levels of these substances can signal muscle weakness, injury, and disease and point to a need for additional testing. […] Muscle biopsies, which involve the removal of a small piece of muscle tissue using a needle or small incision. Providers examine the tissue under a microscope to check for hallmarks of MD. Patients diagnosed by muscle biopsy usually need genetic testing as well to confirm mutations in their genes.

• #65 Clinician Brief: Muscular Dystrophy | Muscular Dystrophy | CDC

  https://www.cdc.gov/muscular-dystrophy/hcp/clinical-overview/index.html

  Early screening and diagnosis of muscular dystrophy are important. […] Early screening and identification can reduce the diagnostic odyssey that families of children with motor delays may face. Without early screening, families can spend years visiting different doctors and undergoing many tests to reach a correct diagnosis. Early screening enables a faster referral to a specialist. Early identification can mean quicker access to care, early intervention programs, or special education resources. […] This web-based tool may help primary care clinicians, therapists, and other specialists diagnose child muscle weakness. The purpose of this tool is to decrease the time between initial signs and diagnosis, enabling earlier access to care. […] CDC funded development of updated care considerations for people living with Duchenne muscular dystrophy (DMD).

• #66 Duchenne muscular dystrophy: diagnosis and perspective of treatment

  https://www.oaepublish.com/articles/jtgg.2024.29

  The benefits of steroid treatment are more significant with early initiation, which requires an early diagnosis to prevent cardio-respiratory complications from bracing and overnight ventilators. […] The involvement of skeletal and cardiac muscles does not occur simultaneously, but treatment at both levels is necessary.

• #67 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Duchenne is typically diagnosed between the ages of 2 and 5, usually after delays in early milestones, such as sitting, walking, and/or talking, are noticed. […] Care in this stage is aimed towards prevention of progression and maintaining strength and function of the muscles. […] After the diagnosis of Duchenne is confirmed by a neuromuscular specialist (NMS), information and resources should be sent to your PCP about Duchenne. […] Your NMS will use standardized assessments at each visit to evaluate your child’s physical symptoms and track changes closely. […] One of the first therapies your NMS may mention is Steroids (corticosteroids). […] Steroids are the only medications approved to treat Duchenne patients regardless of mutation and are known to help slow down muscle damage and weakness caused by Duchenne.

• #68 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Your child’s heart should be checked when the diagnosis of Duchenne is made, and then once a year after. […] In Duchenne, the heart is affected before heart symptoms appear (cardiomyopathy). […] Children in this stage usually do not have any problems breathing. […] It is important to know what to do in the event your child becomes sick or injured, requiring a visit to the emergency room or hospitalization. […] At this stage, your child’s genetic counselor or neuromuscular provider may suggest carrier testing to the females in your family. […] Carrier testing is important because it can impact your health as well.

• #69 Getting diagnosed with a muscle wasting condition – Muscular Dystrophy UK

  https://www.musculardystrophyuk.org/support/information/your-condition/diagnostic-tests/

  Genetic tests are usually performed on a blood sample. They aim to identify which faulty gene is causing a condition and the precise nature of the genetic fault, in other words, the mutation. […] A precise genetic diagnosis allows clinicians to give their patients better information about how the condition will progress during their lifetime. It also allows the person to have better access to treatment and support for management of their condition. A precise genetic diagnosis can help individuals and families make preparations and informed family planning decisions.

• #70 Duchenne Muscular Dystrophy (DMD) and Genetic Testing

  https://mytomorrows.com/blog/patients/duchenne-muscular-dystrophy-and-genetic-testing/

  If a child shows signs of Duchenne, their doctor may investigate with a creatine kinase (CK) blood test before genetic testing. […] When a child’s doctor suspects that they have DMD, they will likely be offered genetic testing or referred to a geneticist and/or genetic counselor. […] When DMD is suspected but the exact dystrophin mutation is not known, the first genetic tests ordered will search for the most common types of mutations which are large deletions and duplications. […] If no deletion or duplication in dystrophin is found, patient samples may be tested by DNA sequencing methods, which can find smaller DNA changes including point mutations. […] When comprehensive genetic testing fails to detect DMD and other clinical findings support this diagnosis, a muscle biopsy may be the next step. […] Genetic testing can be used to diagnose Duchenne before birth if a specific dystrophin mutation is known to be in the family. […] Genetic testing to diagnose DMD helps children with Duchenne begin treatment as soon as possible.

• #71 Data Summary: Muscular Dystrophy | Muscular Dystrophy | CDC

  https://www.cdc.gov/muscular-dystrophy/research/summary.html

  Total time from first signs to diagnosis was 2.5 years. […] Among males with DMD who did not have a family history of muscular dystrophy the: […] Time between noticing signs and diagnosis was about 2.5 years. […] Average age at diagnosis was 5 years. […] When compared to non-Hispanic white children, non-Hispanic black or Hispanic children on average: […] Were tested for DBMD at later ages. […] Had creatine kinase (CK) testing about 1 year later. […] Had DNA testing about 2 years later.

• #72 Diagnosis of Duchenne Muscular Dystrophy

  https://www.neurologylive.com/view/diagnosis-of-duchenne-muscular-dystrophy

  Duchenne muscular dystrophy [DMD] unfortunately has a bit of a delay typically before children reach a diagnosis offered by a neurologist. There is on average somewhere around a 2- to 2-year delay between the onset of symptoms and the ultimate confirmation by a neurologist of a diagnosis of Duchenne muscular dystrophy. […] The average age of diagnosis for a patient with Duchenne muscular dystrophy is usually around age 5 or so. […] When a child presents with weakness, difficulty going up and down stairs, tripping or falling, or a difference in the way they are maneuvering their body, that ultimately prompts them to be evaluated by a neurologist or a neuromuscular specialist. This typically leads to 1 test, which is a blood test looking at the muscle enzyme level CK [creatine kinase]. This is traditionally elevated in muscular dystrophies, whereby those muscles are structurally unstable.

• #73 Clinical and Molecular Diagnosis in Muscular Dystrophies | IntechOpen

  https://www.intechopen.com/chapters/66586

  The presence of clinical symptoms in a male child presented in Cap 2.1 along with increased serum levels of CK, transaminase enzymes or aldolase should trigger the diagnostic investigation for dystrophinopathies. […] When DMD or BMD is suspected, diagnostic recommendation as first investigation is the screening of DMD gene for deletions and duplications by MLPA. […] If no deletions and duplication are identified, the DMD gene should be investigated for point mutations by hrMCA followed by sequencing of exons with a modification of melting curve only. […] If a muscle biopsy is the tool of choice as first step in analysis routine, histochemical staining and dystrophin analysis by immunohistochemistry/immunofluorescence and Western blot confirm or not the dystrophinopathies diagnosis based on the difference in the expression of dystrophin.

• #74 Diagnosis – Limb-Girdle Muscular Dystrophy (LGMD) – Diseases | Muscular Dystrophy Association

  https://www.mda.org/disease/limb-girdle-muscular-dystrophy/diagnosis

  Participants will be tested against 98 different genes that are known to cause LGMD, Pompe (GAA genetic variants), other myopathies, and myasthenic syndrome in order to provide them with better diagnosis. […] No matter the exact genetic cause, treatment is essentially the same for all forms of LGMD physical and occupational therapy, assistive devices, and monitoring for heart and breathing complications.

• #75 Duchenne Muscular Dystrophy: Symptoms and Treatment | Doctor

  https://patient.info/doctor/duchenne-muscular-dystrophy-pro

  Assessment and diagnosis – general points: Awareness: consider DMD in any boy who is not walking by 18 months, who has delayed motor milestones or global developmental delay. Aim to make the diagnosis early, to allow genetic counselling for the family – important if parents are considering another pregnancy. NB: it is important to watch the child running and rising from the floor. Look for a waddling gait and Gower’s sign. This is more useful than formal examination in a young child. Remember that DMD is a devastating diagnosis – follow good practice for disclosing bad news. […] Diagnosing Duchenne muscular dystrophy (investigation): The initial investigation is serum creatine kinase (CK): In DMD the CK level is very high (10-100 x normal from birth). A normal CK at presentation excludes DMD. However, later on CK levels fall due to muscle wasting; therefore, it is not reliable as a screening test in those who are already wheelchair users. The precise diagnosis is best achieved by a combination of: Genetic analysis – can identify most (but not all) of the DMD mutations. Muscle biopsy – with assay for dystrophin protein. Clinical observation of muscle strength and function. Genetic testing after a positive biopsy diagnosis of DMD is mandatory. A muscle biopsy is not necessary if a genetic diagnosis is already known. However, if genetic testing has been done and no mutation identified, but CK concentrations are increased and signs or symptoms consistent with DMD are present, the next necessary diagnostic step is to do a muscle biopsy. This is also the case if there is a family history of DMD and a suspicion of the diagnosis but no family mutation known. […] Diagnosis: Muscle biopsy looking at dystrophin is usually helpful. Genetic tests, including X-inactivation patterns.

• #76 Adult and Adolescent Onset Muscular Dystrophies Part 1: Evaluation and Diagnosis | PM&R KnowledgeNow

  https://now.aapmr.org/adult-and-adolescent-onset-muscular-dystrophies-evaluation-and-diagnosis/

  Adult and adolescent onset muscular dystrophies (MDs) are characterized by progressive muscle weakness and loss of muscle mass with degeneration or degeneration/regeneration due to mutations in one or more genes which code for proteins required for normal muscle function, structural support and homeostasis. […] Diagnosis of early onset conditions may be delayed, sometimes remarkably so; a recent case of FSHD presented as a Case Record of the Massachusetts General hospital went undiagnosed until age 80. […] A detailed family history is essential, as affected family members can confirm the inherited nature of the disease, and the inheritance pattern will help to refine the differential diagnosis. […] A number of tools which can be divided into general and specific diagnostic studies are used to diagnose muscular dystrophy, including genetic testing, blood tests that identify signs of muscle damage, electrodiagnostic studies (EDX), muscle biopsy, pulmonary function tests or spirometry (PFT) electrocardiogram (ECG), and/or echocardiogram (ECHO).

• #77 Muscular Dystrophy – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560582/

  Identify the diverse pathophysiological mechanisms underlying various types of muscular dystrophy to enhance accurate and timely diagnoses. […] Differentiate between different forms of muscular dystrophy, considering their unique patterns of inheritance, onset timing, and rates of muscle degeneration. […] Implement a comprehensive multidisciplinary approach to care, integrating the expertise of different healthcare professionals for optimal patient management. […] Coordinate care efficiently, considering the unique needs and challenges associated with muscular dystrophy, to provide comprehensive and patient-centered support. […] Early diagnosis, genetic testing, and appropriate management can help to improve outcomes and enhance the quality of life for individuals and families affected by muscular dystrophy.

• #78 Muscular Dystrophy Guidelines: Screening, Evaluation and Diagnosis, Duchenne/Becker Muscular Dystrophy

  https://emedicine.medscape.com/article/1259041-guidelines

  The guidelines required a multidisciplinary approach due to the range of expertise needed to care for DMD patients. […] The CDC guidelines recommended considering glucocorticoid therapy in all patients who have DMD, based on findings that glucocorticoids are the only medication available that effectively slows decline in muscle strength and function, offers reduced risk of scoliosis, and stabilizes pulmonary function. […] The AAN/AANEM guidelines classify three major categories of CMDs: Collagenopathies, Merosinopathies, Dystroglycanopathies. […] AAN/AANEM recommendations regarding diagnosis include the following: Immunohistochemical staining for relevant proteins in CMD cases may be included in muscle biopsies when the subtype-specific diagnosis is not apparent after initial diagnostic studies. […] The AAN/AANEM guidelines note that there are no curative CMD subtype-specific interventions. Thus, all screening and interventions are intended to promote growth and potential development, mitigate cumulative morbidities, optimize function, and limit mortality while maximizing quality of life.

• #79 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Experts in the field agree it is best to start steroids before the plateau phase, meaning when your child’s motor skills are not improving anymore but have not yet gotten worse. […] The decision to initiate steroids should not be made without extensive education by your NMS. […] Your rehabilitation team, which will include a physical therapist (PT) and sometimes a Physical Medicine and Rehabilitation (PMR) doctor, will be important moving forward. […] It is important for your child to have a nutritional assessment at the time of diagnosis and/or when starting steroids. […] If you or your child’s teacher suspect any learning delays, your child should be screened by a professional. […] Children in the early phase of Duchenne usually do not have problems with their heart, but regular heart checks are very important.

• #80 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Your child’s heart should be checked when the diagnosis of Duchenne is made, and then once a year after. […] In Duchenne, the heart is affected before heart symptoms appear (cardiomyopathy). […] Children in this stage usually do not have any problems breathing. […] It is important to know what to do in the event your child becomes sick or injured, requiring a visit to the emergency room or hospitalization. […] At this stage, your child’s genetic counselor or neuromuscular provider may suggest carrier testing to the females in your family. […] Carrier testing is important because it can impact your health as well.

• #81 Muscular Dystrophy Guidelines: Screening, Evaluation and Diagnosis, Duchenne/Becker Muscular Dystrophy

  https://emedicine.medscape.com/article/1259041-guidelines

  The guidelines required a multidisciplinary approach due to the range of expertise needed to care for DMD patients. […] The CDC guidelines recommended considering glucocorticoid therapy in all patients who have DMD, based on findings that glucocorticoids are the only medication available that effectively slows decline in muscle strength and function, offers reduced risk of scoliosis, and stabilizes pulmonary function. […] The AAN/AANEM guidelines classify three major categories of CMDs: Collagenopathies, Merosinopathies, Dystroglycanopathies. […] AAN/AANEM recommendations regarding diagnosis include the following: Immunohistochemical staining for relevant proteins in CMD cases may be included in muscle biopsies when the subtype-specific diagnosis is not apparent after initial diagnostic studies. […] The AAN/AANEM guidelines note that there are no curative CMD subtype-specific interventions. Thus, all screening and interventions are intended to promote growth and potential development, mitigate cumulative morbidities, optimize function, and limit mortality while maximizing quality of life.

• #82 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Your child’s heart should be checked when the diagnosis of Duchenne is made, and then once a year after. […] In Duchenne, the heart is affected before heart symptoms appear (cardiomyopathy). […] Children in this stage usually do not have any problems breathing. […] It is important to know what to do in the event your child becomes sick or injured, requiring a visit to the emergency room or hospitalization. […] At this stage, your child’s genetic counselor or neuromuscular provider may suggest carrier testing to the females in your family. […] Carrier testing is important because it can impact your health as well.

• #83 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Experts in the field agree it is best to start steroids before the plateau phase, meaning when your child’s motor skills are not improving anymore but have not yet gotten worse. […] The decision to initiate steroids should not be made without extensive education by your NMS. […] Your rehabilitation team, which will include a physical therapist (PT) and sometimes a Physical Medicine and Rehabilitation (PMR) doctor, will be important moving forward. […] It is important for your child to have a nutritional assessment at the time of diagnosis and/or when starting steroids. […] If you or your child’s teacher suspect any learning delays, your child should be screened by a professional. […] Children in the early phase of Duchenne usually do not have problems with their heart, but regular heart checks are very important.

• #84 Duchenne Muscular Dystrophy Diagnosis and Care | shopAAP

  https://www.aap.org/Duchenne-Muscular-Dystrophy-Diagnosis-and-Care?srsltid=AfmBOorKk4ek8RrbpZsG2JDxjQrxtfxLLJS0qfkKPEroAbtH4eW9_uLP

  Describe the role of rehabilitation management for DMD patients. […] Summarize the management of osteoporosis in patients with Duchenne Muscular Dystrophy (DMD). […] Identify pulmonary complications for patients with Duchenne Muscular Dystrophy (DMD). […] Describe noninvasive respiratory therapies for DMD patients. […] Identify common social-emotional and behavioral disorders in patients with Duchenne Muscular Dystrophy (DMD). […] Explain special education interventions and accommodations.

• #85 Diagnosis & Early Phase – Parent Project Muscular Dystrophy

  https://www.parentprojectmd.org/care/care-guidelines/by-stage/early-ambulatory/

  Your child’s heart should be checked when the diagnosis of Duchenne is made, and then once a year after. […] In Duchenne, the heart is affected before heart symptoms appear (cardiomyopathy). […] Children in this stage usually do not have any problems breathing. […] It is important to know what to do in the event your child becomes sick or injured, requiring a visit to the emergency room or hospitalization. […] At this stage, your child’s genetic counselor or neuromuscular provider may suggest carrier testing to the females in your family. […] Carrier testing is important because it can impact your health as well.

• #86 Duchenne Muscular Dystrophy Diagnosis and Care | shopAAP

  https://www.aap.org/Duchenne-Muscular-Dystrophy-Diagnosis-and-Care?srsltid=AfmBOorKk4ek8RrbpZsG2JDxjQrxtfxLLJS0qfkKPEroAbtH4eW9_uLP

  Describe the role of rehabilitation management for DMD patients. […] Summarize the management of osteoporosis in patients with Duchenne Muscular Dystrophy (DMD). […] Identify pulmonary complications for patients with Duchenne Muscular Dystrophy (DMD). […] Describe noninvasive respiratory therapies for DMD patients. […] Identify common social-emotional and behavioral disorders in patients with Duchenne Muscular Dystrophy (DMD). […] Explain special education interventions and accommodations.

• #87 Duchenne Muscular Dystrophy (DMD): Symptoms & Treatment

  https://my.clevelandclinic.org/health/diseases/23538-duchenne-muscular-dystrophy-dmd

  If youre concerned about the risk of passing on DMD or other genetic conditions before trying to have a biological child, talk to your healthcare provider about genetic counseling. […] The prognosis is often poor for people with Duchenne muscular dystrophy (DMD). […] If your child has been diagnosed with Duchenne muscular dystrophy, theyll need to see their team of healthcare providers regularly to receive treatment and monitor symptoms.

• #88 Muscular Dystrophy – StatPearls – NCBI Bookshelf

  https://www.ncbi.nlm.nih.gov/books/NBK560582/

  Identify the diverse pathophysiological mechanisms underlying various types of muscular dystrophy to enhance accurate and timely diagnoses. […] Differentiate between different forms of muscular dystrophy, considering their unique patterns of inheritance, onset timing, and rates of muscle degeneration. […] Implement a comprehensive multidisciplinary approach to care, integrating the expertise of different healthcare professionals for optimal patient management. […] Coordinate care efficiently, considering the unique needs and challenges associated with muscular dystrophy, to provide comprehensive and patient-centered support. […] Early diagnosis, genetic testing, and appropriate management can help to improve outcomes and enhance the quality of life for individuals and families affected by muscular dystrophy.

• #89 Sponsored genetic testing | Detect Muscular Dystrophy Program | Invitae

  https://www.invitae.com/us/sponsored-testing/detect-mdys

  Muscular dystrophy refers to a group of disorders characterized by progressive muscle weakness and loss of muscle tissue. […] Many forms of muscular dystrophy have overlapping clinical features making diagnosis difficult. Genetic testing has been proven to shorten the time to diagnosis and prevent misdiagnosis. […] Accurate and early identification of affected individuals allows for improved clinical outcomes and the opportunity to participate in clinical trials. […] Individuals in the US tested through the Detect Muscular Dystrophy program are eligible for post-test genetic counseling to help them understand their test results. This service is made available by Invitae at no charge as part of the program.

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