Any myopathy in which an autosomal dominantly inherited genetic variation in the NEB gene causes disease via a dominant-negative mechanism. Symptoms reported in patients include distal muscle weakness, hypotonia, muscle fiber atrophy, foot drop, high arched palate, feeding difficulties, and type 1 fiber predominance. The disease is autosomal dominant nebulin-related myopathy (MONDO_1010152, a Monarch Disease Ontology entry).