Any Joubert syndrome in which the cause of the disease is a mutation in the INPP5E gene. The disease is Monarch Disease Ontology id MONDO_0008944 (Joubert syndrome 1). Also known as: CORS1, CPD4, INPP5E Joubert syndrome, JBTS1, Joubert syndrome caused by mutation in INPP5E, Joubert syndrome type 1, cerebellooculorenal syndrome 1.