Comparative genomic hybridization in the detection of DNA copy number abnormalities in uveal melanoma
Gordon, K.B.; Thompson, C.T.; Char, D.H.; O'Brien, J.M.; Kroll, S.; Ghazvini, S.; Gray, J.W.
Cancer Research 54(17): 4764-4768
1994
ISSN/ISBN: 0008-5472 PMID: 8062277 Document Number: 423643
Genomic instability appears to play an important role in the development, growth, invasiveness, and eventual metastasis of the neoplastic cell. We have used a powerful new technique, comparative genomic hybridization, to evaluate genetic alterations in 10 fresh frozen uveal melanomas. Comparative genomic hybridization utilizes dual fluorescence in situ hybridization to characterize chromosome deletions and duplications, allowing for simultaneous evaluation of the entire human genome. Several consistent chromosomal abnormalities were detected. This study confirmed previous findings obtained using standard cytogenetic techniques but demonstrated an increased incidence in abnormalities of chromosomes 3 and 8; there was loss of chromosome 3 and duplication of 8q. In addition, we identified, although less frequently, other recurrent abnormal regions including alterations on chromosomes 6p, 7q, 9p, and 13q.