Monarch Disease Ontology term MONDO_0013965 (lethal congenital contracture syndrome 4) is any lethal congenital contracture syndrome in which the cause of the disease is a mutation in the MYBPC1 gene. Also known as: MYBPC1 lethal congenital contracture syndrome, lethal congenital contracture syndrome caused by mutation in MYBPC1, lethal congenital contracture syndrome type 4.