Short answer · Medically reviewed summary · Last updated: 2026-05-08
Dysferlinopathy - Miyoshi Myopathy is a rare, genetically inherited muscle disorder caused by mutations in the DYSF gene, which results in a deficiency of the dysferlin protein. While often referred to by the clinical presentation of Miyoshi Myopathy, it is part of a spectrum of conditions known as dysferlinopathies, which also include Limb-Girdle Muscular Dystrophy type R2 (formerly LGMD2B). What are the common synonyms for Dysferlinopathy - Miyoshi Myopathy? In medical literature, Dysferlinopathy - Miyoshi Myopathy is frequently identified by several names depending on the specific clinical phenotype and historical classification.
Dysferlinopathy - Miyoshi Myopathy synonyms
Other names for Dysferlinopathy - Miyoshi Myopathy: synonyms, acronyms and related terms used by doctors and patients.
Dysferlinopathy - Miyoshi Myopathy is a rare, genetically inherited muscle disorder caused by mutations in the DYSF gene, which results in a deficiency of the dysferlin protein. While often referred to by the clinical presentation of Miyoshi Myopathy, it is part of a spectrum of conditions known as dysferlinopathies, which also include Limb-Girdle Muscular Dystrophy type R2 (formerly LGMD2B).
What are the common synonyms for Dysferlinopathy - Miyoshi Myopathy?
In medical literature, Dysferlinopathy - Miyoshi Myopathy is frequently identified by several names depending on the specific clinical phenotype and historical classification. Common terms include:
- Miyoshi Myopathy (MM): Named after the Japanese physician who first described the distal muscle involvement.
- Limb-Girdle Muscular Dystrophy type R2 (LGMDR2): The updated nomenclature for the form previously known as LGMD2B.
- Distal Myopathy with Anterior Tibial Onset: A descriptive clinical term often used in older research.
- Dysferlin deficiency: A broad term covering the entire spectrum of the disease.
Why does this condition have multiple names?
The naming of Dysferlinopathy - Miyoshi Myopathy has evolved as genetic research revealed that different clinical presentations—specifically distal weakness (Miyoshi) and proximal weakness (LGMD)—are caused by mutations in the same DYSF gene. Historically, these were viewed as distinct diseases. Today, medical professionals prefer the umbrella term dysferlinopathy to describe the underlying genetic cause, while using specific clinical descriptors to indicate whether the onset was distal or proximal.
How is the disease classified in medical databases?
Standardized classification systems help clinicians track Dysferlinopathy - Miyoshi Myopathy across global health systems:
- OMIM: #254130 (Miyoshi Myopathy) and #253601 (LGMDR2).
- Orphanet: ORPHA251 (Dysferlinopathy), which encompasses both clinical subtypes.
- ICD-10/11: Classified under hereditary muscular dystrophies (G71.0).
Next steps
- Consult a neuromuscular specialist or clinical geneticist to confirm your specific DYSF mutation.
- Join the DiseaseMaps.org community to connect with the 33 other members who are navigating life with this condition.
- Register with the Jain Foundation, a leading organization dedicated to finding a cure for Dysferlinopathy - Miyoshi Myopathy.
- Review your genetic testing report with a counselor to understand the implications for family planning.
Medical disclaimer: This information is for educational purposes only and should not replace professional medical advice, diagnosis, or treatment.
References
- NIH Genetic and Rare Diseases (GARD) Information Center: Dysferlinopathy.
- Orphanet: Dysferlinopathy (ORPHA251).
- Online Mendelian Inheritance in Man (OMIM): #254130.
- The Jain Foundation: Resources for Dysferlinopathy Patients.
