Hermansky-Pudlak syndrome 9 (MONDO_0013606) is any Hermansky-Pudlak syndrome in which the cause of the disease is a mutation in the BLOC1S6 gene. Also known as: BLOC1S6 Hermansky-Pudlak syndrome, HPS9, Hermansky-Pudlak syndrome caused by mutation in BLOC1S6, Hermansky-Pudlak syndrome type 9.