has material basis in germline mutation in ROM1 Leber congenital amaurosis PRPH2-related retinopathy Leber congenital amaurosis 18 https://github.com/monarch-initiative/mondo/issues/8424 MONDO:1060145 LCA18 MEDGEN:861539 GARD:0028162 A Leber congenital amaurosis that is caused by a variation in the PRPH2 gene. UMLS:C4013102