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A family with adult-onset myofibrillar myopathy with BAG3 mutation (P470S) presenting with axonal polyneuropathy
- Source :
- Neuromuscular Disorders. 30:727-731
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- We report a family with adult-onset myofibrillar myopathy with BAG3 mutation who presented peroneal weakness and axonal polyneuropathy, mimicking axonal Charcot-Marie-Tooth disease. The male proband noticed difficulty in tiptoeing at age 34. At age 42, the examination showed muscle weakness and atrophy in distal lower extremities with diminished patellar and Achilles tendon reflexes. Thermal and vibration sensations were also impaired in both feet. The serum CK level was 659 U/L. On muscle imaging, predominant semitendinosus muscle atrophy coexisted with atrophies in the quadriceps, gastrocnemius and lumbar paraspinal muscles. The muscle biopsy showed myofibrillar myopathy with fiber type grouping. His 68-year-old mother also had suffered from distal leg weakness and sensory impairment since her forties. A heterozygous mutation in BAG3 (P470S) was identified in both patients. Clinical features of myofibrillar myopathy with axonal polyneuropathy were consistent with BAG3-related myopathy. Our patients showed remarkably mild presentations without cardiomyopathy, unlike the majorities of previously reported cases.
- Subjects :
- 0301 basic medicine
Weakness
Pathology
medicine.medical_specialty
03 medical and health sciences
0302 clinical medicine
Atrophy
medicine
Semitendinosus muscle
Myopathy
Genetics (clinical)
Achilles tendon
Muscle biopsy
medicine.diagnostic_test
business.industry
Muscle weakness
musculoskeletal system
medicine.disease
030104 developmental biology
medicine.anatomical_structure
Neurology
Pediatrics, Perinatology and Child Health
Neurology (clinical)
medicine.symptom
business
Polyneuropathy
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 09608966
- Volume :
- 30
- Database :
- OpenAIRE
- Journal :
- Neuromuscular Disorders
- Accession number :
- edsair.doi...........7389b8b8b89eb39d847621f4250b3faf