OCA

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OCA
TermOCA
Short definitiondisability - (pronounced) (ub-STRUK-avoid) obstruction of a passageway 
TypeCancer terms
SpecialtyOncology
LanguageEnglish
SourceNCI
Comments


OCA - A group of rare, inherited disorders in which the skin, hair and eyes have little or no melanin (pigment). Most people with these disorders have very pale skin, white or light-colored hair, and light-colored eyes. People with OCA can also have vision problems, including blurred vision, rapid eye movements, squinting, and increased sensitivity to light. People with these disorders are at high risk of developing squamous cell carcinoma of the skin at a very young age. The seven types of OCA are caused by mutations (changes) in the TYR, OCA2, TYRP1, SLC45A2, OCA5, SLC24A5, or C10orf11 gene. These genes are involved in the production of melanin. The amount of skin, hair, and eye pigment seen in each type of OCA depends on the gene involved and the mutation. Also called oculocutaneous albinism

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