| 背景信息 |
Chromosome 12 open reading frame 42 (C12orf42) encodes an uncharacterized protein that has been associated with cell cycle-dependent processes and mitotic structures in proteomic analyses. Although it may be expressed at low levels due to potential nonsense-mediated mRNA decay, it is recognized for its role in skin pigmentation. Clinical relevance is well-established through its association with rare genodermatoses, specifically Dyschromatosis Universalis Hereditaria and Dyschromatosis Symmetrica Hereditaria. These conditions are characterized by hyper- and hypopigmented macules, often presenting in infancy or childhood with symmetric or widespread distribution, primarily affecting individuals of East Asian descent. |