oculocutaneous albinism type 4
oculocutaneous albinism type 4
An inherited disorder of pigmentation (OMIM:606574) characterised by reduced biosynthesis of melanin in the skin, hair and eyes, and classic albinism-type ocular abnormalities: decreased visual acuity, macular hypoplasia, optic dysplasia, atypical choroidal vessels and nystagmus.Molecular pathology
OCA4 is caused by a mutation of SLC45A2 on chromosome 5p13.2, which encodes a transporter protein that mediates melanin synthesis.