Retinitis Pigmentosa 73, also known as rp73, is related to mucopolysaccharidosis, type iiic and pseudoretinitis pigmentosa. An important gene associated with Retinitis Pigmentosa 73 is HGSNAT (Heparan-Alpha-Glucosaminide N-Acetyltransferase). Affiliated tissues include retina and eye, and related phenotypes are rod-cone dystrophy and retinal atrophy