DTNBP1 and oculocutaneous albinism: Mutations in Hermansky–Pudlak syndrome 1 (HPS1), HPS3, HPS4, HPS5, HPS6, adaptor related protein complex 3 subunit beta 1 (AP3B1), dystrobrevin binding protein 1 (DTNBP1), biogenesis of lysosomal organelles complex 1 subunit 3 (BLOC1S3), pallidin (PLDN), lysosomal trafficking regulator (LYST), myosin-Va (MYO5A), melanophilin (MLPH), or ras-like protein in the brain 27a (RAB27A) can cause syndromic OCA [2, 3].