PMID: 7522037Jul 1, 1994Paper

Loss of chromosome arm 8p loci in prostate cancer: mapping by quantitative allelic imbalance

Genes, Chromosomes & Cancer
D MacGroganR Bookstein

Abstract

A previous study of 18 primary or metastatic prostate cancers showed loss of genetic markers on chromosome 8; 10, or 16 in more than 50% of cases [Bergerheim USR et al. (1991) Genes Chromosom Cancer 3:215-220]. The small size and infiltrative nature of primary prostatic tumors have hindered efforts to assess allelic losses by traditional restriction fragment length polymorphism (RFLP)/Southern blotting methods. To improve the sensitivity and specificity of this analysis in early prostate cancer, we have amplified polymorphic microsatellite repeats by polymerase chain reaction (PCR), and have quantitated allelic imbalances with phosphor imaging technology. In this study, 63 primary prostate tumors and matched benign tissues obtained by radical prostatectomy were examined at 28 genetic loci on chromosome 8, all but five of which were located on the short arm. Twenty-nine (46%) of the 63 cases showed loss of at least one locus. Multiple adjacent loci, usually including the LPL and MSR genes in 8p22, were lost in 28 cases. In 10 of these, losses were observed at all informative loci on the p arm. In another 15 tumors, losses were restricted to subregions of the p arm by loci retained either distally toward the p terminus or proxima...Continue Reading

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