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A high frequency of somatic mutation in GNAQ has been reported in uveal melanoma (UM). GNAQ is located in the chromosomal band 9q21, the same chromosomal band that harbors a putative candidate gene for hereditary UM. We investigated the frequency of germline sequence alterations in the GNAQ gene in UM patients with increased predisposition to hereditary cancer. A total of 44 high risk UM patients were studied including three patients with a family history of UM, 15 patients with a family history of cutaneous melanoma (CM), three patients with early age at onset of their UM (<30 years) and 23 patients with strong family history of cancer and/or personal history of multiple primary tumors. Mutational screening of the seven exons of GNAQ and nearby intronic sequence was carried out by direct sequencing. We identified two deep intronic variants but no potential pathogenic mutations in GNAQ. Our results exclude GNAQ as a candidate gene in UM patients with a high risk for hereditary cancer predisposition.
Department of Ophthalmology, The Ohio State University, 400 W 12th Ave, Rm 202, Columbus, OH, 43210, USA, Mohamed.firstname.lastname@example.org.
This article was published in the following journal.
Name: Familial cancer
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An unpigmented malignant melanoma. It is an anaplastic melanoma consisting of cells derived from melanoblasts but not forming melanin. (Dorland, 27th ed; Stedman, 25th ed)
Found in large amounts in the plasma and urine of patients with malignant melanoma. It is therefore used in the diagnosis of melanoma and for the detection of postoperative metastases. Cysteinyldopa is believed to be formed by the rapid enzymatic hydrolysis of 5-S-glutathionedopa found in melanin-producing cells.
Experimentally induced tumor that produces MELANIN in animals to provide a model for studying human MELANOMA.
A ring of tissue extending from the scleral spur to the ora serrata of the retina. It consists of the uveal portion and the epithelial portion. The ciliary muscle is in the uveal portion and the ciliary processes are in the epithelial portion.
A cellular subtype of malignant melanoma. It is a pigmented lesion composed of melanocytes occurring on sun-exposed skin, usually the face and neck. The melanocytes are commonly multinucleated with a "starburst" appearance. It is considered by many to be the in situ phase of lentigo maligna melanoma.
Melanoma is a highly malignant tumor of melanin-forming cells (melanocytes) There are most commonly found in the skin (resulting from sunlight exposure), but also in the eyes and mucous membranes. Metastasis to other regions of the body is also common....
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Bioinformatics is the application of computer software and hardware to the management of biological data to create useful information. Computers are used to gather, store, analyze and integrate biological and genetic information which can then be applied...