A new phenotype of dysferlinopathy with congenital onset
Copyright policy )A new phenotype of dysferlinopathy with congenital onset
We report two patients with a new phenotype of dysferlinopathy presenting as congenital muscular disease. Both patients showed weakness in proximal lower limbs and neck flexor muscles at birth. The presence of normal CK levels during the first years should be noted. Initial MRI showed no abnormalities but short-time-inversion-recovery (STIR) sequences revealed a striking myoedema in gastrocnemius and hamstring muscles at the age of 5. Muscle biopsy showed mild dystrophic features and the absence of dysferlin. Dysferlin gene (DYSF) analysis revealed a p.Ala927LeufsX21 mutation in a homozygous state in both siblings. This new phenotype widens the clinical spectrum of dysferlin myopathies.
Genetic Markers, Male, Congenital muscular dystrophy, Genotype, Biopsy, DNA Mutational Analysis, Muscle Proteins, Muscular Diseases, Edema, Humans, Genetic Predisposition to Disease, Genetic Testing, Muscle, Skeletal, Creatine Kinase, Dysferlin, Muscle Weakness, Membrane Proteins, Magnetic Resonance Imaging, Amino Acid Substitution, Child, Preschool, Female, LGMD2B
Genetic Markers, Male, Congenital muscular dystrophy, Genotype, Biopsy, DNA Mutational Analysis, Muscle Proteins, Muscular Diseases, Edema, Humans, Genetic Predisposition to Disease, Genetic Testing, Muscle, Skeletal, Creatine Kinase, Dysferlin, Muscle Weakness, Membrane Proteins, Magnetic Resonance Imaging, Amino Acid Substitution, Child, Preschool, Female, LGMD2B
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