Monarch Disease Ontology id MONDO_0100121 (SCN4A-related myopathy, autosomal recessive) is any congenital myopathy in which the cause of the disease is a mutation in the SCN4A gene. It include is a spectrum of autosomal recessive disorders including congenital myasthenic syndrome, fetal hypokinesia, and congenital myopathy. Also known as: congenital myopathy with "corona" fibers, selective muscle atrophy, and craniosynostosis, congenital myopathy with severe fetal hypokinesia, congenital myopathy with severe foetal hypokinesia, myopathy with ptosis and mild dystrophic pattern.