Gaucher Disease, Atypical, Due to Saposin C Deficiency, also known as gaucher disease, atypical, is related to gaucher disease, type i and gaucher's disease. An important gene associated with Gaucher Disease, Atypical, Due to Saposin C Deficiency is PSAP (Prosaposin). Affiliated tissues include spleen and bone, and related phenotypes are ptosis and developmental regression