Hermansky-Pudlak Syndrome Due to Bloc-2 Deficiency, also known as hermansky-pudlak syndrome without pulmonary fibrosis, is related to griscelli syndrome and bleeding disorder, platelet-type, 14. An important gene associated with Hermansky-Pudlak Syndrome Due to Bloc-2 Deficiency is HPS3 (HPS3 Biogenesis Of Lysosomal Organelles Complex 2 Subunit 1). Affiliated tissues include skin and eye, and related phenotypes are pigmentation and integument