PYCR1-related de Barsy syndrome (Monarch Disease Ontology id MONDO_0013755) is any de Barsy syndrome in which the cause of the disease is a mutation in the PYCR1 gene. Also known as: ARCL3B, De Barsy syndrome B, PYCR1 de Barsy syndrome, PYCR1 deficiency, de Barsy syndrome caused by mutation in PYCR1, pyrroline-5-carboxylate reductase 1 deficiency.