P gene mutations in patients with oculocutaneous albinism and findings suggestive of Hermansky-Pudlak syndrome
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چکیده
منابع مشابه
P gene mutations in patients with oculocutaneous albinism and findings suggestive of Hermansky-Pudlak syndrome.
O culocutaneous albinism (OCA) is a genetically heterogeneous disorder characterised by abnormally low amounts of melanin in the eyes, skin, and hair. In addition to hypopigmentation of the skin and eyes, OCA patients have ocular manifestations including nystagmus, foveal hypoplasia with reduced visual acuity, and strabismus. Several subtypes of OCA exist. OCA2, the most common subtype, results...
متن کاملAlbinism with haemorrhagic diathesis: Hermansky-Pudlak syndrome.
Four cases of albinism with haemorrhagic diathesis (Hermansky-Pudlak syndrome) are presented. The cases displayed wide phenotypic variation. Electroretinography was performed on all four patients and was found to be normal. One patient developed a cutaneous malignant melanoma.
متن کاملPartial Oculocutaneous Albinism: Two Siblings with Features of both Hermansky Pudlak and Waardenburg's Syndrome.
Albinism is an inherited abnormality of melanin synthesis with incidence of one per 20,000 births. Its clinical manifestations are related to the reduction or absence of pigmentation in the visual system and/or the skin and teguments. The clinical spectrum of Oculocutaneous Albinism (OCA) has four types ranging from OCA 1 - 4, of which OCA 1, A-1 is the most severe form. Partial cutaneous albin...
متن کاملP gene mutations associated with oculocutaneous albinism type II (OCA2).
Oculocutaneous albinism type II (OCA2) is the most common form of albinism in humans. OCA2 has been previously associated with mutations of the P gene, the human homologue to the murine pink-eyed dilution gene. The P gene encodes a 110 kDa protein containing 12 potential membrane spanning domains and is associated with melanosomal membranes. The specific function of the P protein is currently u...
متن کاملHermansky-Pudlak syndrome genes are frequently mutated in patients with albinism from the Arabian Peninsula.
To the Editor: Albinism is a genetically heterogeneous group of disorders characterized by reduced melanin biosynthesis that primarily affects the skin and/or the eye (1). All known genetic causes are autosomal recessive except for X-linked isolated ocular albinism [Nettleship-Falls or OA1, GPR143 (G-protein coupled receptor 143)] (1). A total of 18 different genes have been identified to date,...
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ژورنال
عنوان ژورنال: Journal of Medical Genetics
سال: 2004
ISSN: 1468-6244
DOI: 10.1136/jmg.2003.014902