spinal muscular atrophy with congenital bone fractures 1 (Monarch Disease Ontology identifier MONDO_0014806) is any prenatal-onset spinal muscular atrophy with congenital bone fractures in which the cause of the disease is a mutation in the TRIP4 gene. Also known as: SMABF1, TRIP4 prenatal-onset spinal muscular atrophy with congenital bone fractures, prenatal-onset spinal muscular atrophy with congenital bone fractures caused by mutation in TRIP4, spinal muscular atrophy with congenital bone fractures type 1, spinal muscular atrophy, type I, with congenital bone fractures.