Monarch Disease Ontology entry MONDO_0010818 (retinitis pigmentosa 12) is any retinitis pigmentosa in which the cause of the disease is a mutation in the CRB1 gene. Also known as: CRB1 retinitis pigmentosa, RP12, retinitis pigmentosa caused by mutation in CRB1, retinitis pigmentosa type 12, retinitis pigmentosa-12.