JOURNAL ARTICLE

Oncogenic GNAQ mutations are not correlated with disease-free survival in uveal melanoma

J Bauer, E Kilic, J Vaarwater, B C Bastian, C Garbe, A de Klein
British Journal of Cancer 2009 September 1, 101 (5): 813-5
19654573

BACKGROUND: Recently, oncogenic G protein alpha subunit q (GNAQ) mutations have been described in about 50% of uveal melanomas and in the blue nevi of the skin.

METHODS: GNAQ exon 5 was amplified from 75 ciliary body and choroidal melanoma DNAs and sequenced directly. GNAQ mutation status was correlated with disease-free survival (DFS), as well as other clinical and histopathological factors, and with chromosomal variations detected by FISH and CGH.

RESULTS: Of the 75 tumour DNA samples analysed, 40 (53.3%) harboured oncogenic mutations in GNAQ codon 209. Univariate and multivariate analysis showed that GNAQ mutation status was not significantly correlated with DFS.

CONCLUSION: The GNAQ mutation status is not suitable to predict DFS. However, the high frequency of GNAQ mutations may render it a promising target for therapeutic intervention.

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