Distal nebulin myopathy is a rare, slowly progressive, autosomal recessive distal myopathy characterized by early onset of predominantly distal muscle weakness and atrophy affecting lower leg extensor muscles, finger extensors and neck flexors. Muscle histology does not always show nemaline rods.

Distal nebulin myopathy is a rare, slowly progressive, autosomal recessive distal myopathy characterised by early onset of predominantly distal muscle weakness and atrophy affecting lower leg extensor muscles, finger extensors and neck flexors. Muscle histology does not always show nemaline rods.

A rare slowly progressive autosomal recessive distal myopathy with characteristics of early onset of predominantly distal muscle weakness and atrophy affecting lower leg extensor muscles, finger extensors and neck flexors. Muscle histology does not always show nemaline rods. The disease manifests initially in early childhood or young adulthood by foot drop but the first symptoms can be seen as early as one year of age. Caused by biallelic mutations (with at least one of them being missense mutation) in the gene NEB (2q22) which encodes the protein nebulin. The latter is expressed in the thin filaments of striated muscle and is required for the proper assembly of the thin filaments, for the maintenance of their lengths and for their contractile function. Transmission is autosomal recessive.