multiple mitochondrial dysfunctions syndrome 3 (Monarch Disease Ontology identifier MONDO_0014132) is any fatal multiple mitochondrial dysfunctions syndrome in which the cause of the disease is a mutation in the IBA57 gene. Also known as: IBA57 deficiency, IBA57 fatal multiple mitochondrial dysfunctions syndrome, fatal multiple mitochondrial dysfunctions syndrome caused by mutation in IBA57, multiple mitochondrial dysfunctions syndrome type 3.