PMID- 8084616 OWN - NLM STAT- MEDLINE DCOM- 19941013 LR - 20061115 IS - 0950-9232 (Print) IS - 0950-9232 (Linking) VI - 9 IP - 10 DP - 1994 Oct TI - Deletion mapping of chromosome 8p in prostate cancer by fluorescence in situ hybridization. PG - 3071-6 AB - Double-target fluorescence in situ hybridization (FISH) was applied to 42 cases of prostate cancer and seven cases of histologically proven benign prostate hyperplasia for the detection of structural aberrations of chromosome 8. Cosmid probes for two chromosome 8p loci (LPL/8p22 and D8S7/8p23) were used in 34 specimens of malignant tumors obtained by the touch biopsy technique. Deletion was defined as when the number of cosmid signals was lower than the number of centromere signals in more than 35% of all nuclei observed. In total, thirty of the 42 (71%) specimens demonstrated any type of 8p deletion. Out of the 34 cases in which deletion mapping could be evaluated, distal deletion (D8S7) was detected in 17 (50%), of which 10 also showed deletion of LPL. Deletion of LPL was detected in 18 cases (53%), of which 8 (24%) retained the D8S7 (interstitial deletion). When the deletion pattern was graded as (1) no deletion (2) partial deletion (either D8S7 or LPL deleted) and (3) both deletions, the degree of deletion was well correlated with the tumor grade (P = 0.0009) and with stage (P = 0.0072, Fisher's Exact test). These data support the hypothesis that tumor suppressor gene(s) may be located in the chromosomal region 8p22, hence 8p deletions may play a crucial role in the pathogenesis of prostate cancer. FAU - Matsuyama, H AU - Matsuyama H AD - Department of Urology, Karolinska Hospital, Stockholm, Sweden. FAU - Pan, Y AU - Pan Y FAU - Skoog, L AU - Skoog L FAU - Tribukait, B AU - Tribukait B FAU - Naito, K AU - Naito K FAU - Ekman, P AU - Ekman P FAU - Lichter, P AU - Lichter P FAU - Bergerheim, U S AU - Bergerheim US LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - England TA - Oncogene JT - Oncogene JID - 8711562 SB - IM MH - *Chromosome Deletion MH - Chromosome Mapping MH - *Chromosomes, Human, Pair 8 MH - Humans MH - In Situ Hybridization, Fluorescence MH - Male MH - Prostatic Neoplasms/*genetics/pathology EDAT- 1994/10/01 00:00 MHDA- 1994/10/01 00:01 CRDT- 1994/10/01 00:00 PHST- 1994/10/01 00:00 [pubmed] PHST- 1994/10/01 00:01 [medline] PHST- 1994/10/01 00:00 [entrez] PST - ppublish SO - Oncogene. 1994 Oct;9(10):3071-6.