Congenital neuromuscular disorder with dysmorphic facies (NMDF) is an autosomal recessive disorder characterized by impaired skeletal muscle development, usually resulting in hypotonia and secondary joint contractures, and dysmorphic facial features. Features are apparent from birth. Affected individuals may show motor delay, speech delay, and impaired intellectual development. The severity of the disorder is highly variable (Schnabel et al., 2023; Roos et al., 2023). [from
OMIM]