Monarch Disease Ontology term MONDO_0017936 (benign Samaritan congenital myopathy) is a rare, genetic, skeletal muscle disease characterized by severe neonatal hypotonia with respiratory insufficiency, delay in motor milestones, and dysmorphic features including bitemporal narrowing, epicanthal folds and hypertelorism. Affected individuals show gradual improvement in hypotonia and muscle weakness within the first two years of life resulting in minimal clinical manifestations in adulthood.