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Jpn J Cancer Res. 1997 Apr;88(4):389-93.

PRLTS gene alterations in human prostate cancer.

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  • 1Department of Urology, School of Medicine, Chiba University, Chuo-ku.


Since loss of heterozygosity on 8p22-p21.3 has been found frequently in prostate cancer, the status of a candidate tumor suppressor gene named PRLTS gene, recently cloned from the same region in some human malignancies, was examined in the present study. DNAs were isolated from 69 Japanese prostate cancer patients (37 localized and 32 cancer-death cases). Loss of heterozygosity at this gene locus was observed in 15 of 36 (42%) localized prostate cancer patients and 22 of 32 (69%) cancer-death patients. One cancer-death patient had a missense mutation, ACG-->ATG (Thr-->Met) at codon 64 in metastatic tumor tissues of pelvic lymph node and liver, and these tissues showed loss of the homologous allele, indicating that "two-hit" mutation of the PRLTS gene had occurred in this case. The others did not show any mutation, regardless of the presence or absence of loss of heterozygosity. Although loss of heterozygosity at the PRLTS gene locus is a relatively common abnormality, mutation of this gene is rare in prostate cancer.

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