OCA2 and Chédiak-Higashi syndrome: There are 12 kinds of albinism-associated disorders [14]: oculocutaneous albinism type 1 (OCA1), oculocutaneous albinism type 2 (OCA2), oculocutaneous albinism type 3 (OCA3), oculocutaneous albinism type 4 (OCA4), oculocutaneous albinism type 5 (OCA5), oculocutaneous albinism type 6 (OCA6), oculocutaneous albinism type 7 (OCA7), Hermansky–Pudlak syndrome (HPS), Chediak–Higashi syndrome (CHS), Angelman syndrome (AS), Prader–Willi syndrome (PWS), and Ocular albinism (OA1).