PMID- 2065297 OWN - NLM STAT- MEDLINE DCOM- 19910809 LR - 20190815 IS - 0165-4608 (Print) IS - 0165-4608 (Linking) VI - 53 IP - 2 DP - 1991 Jun TI - Sister chromatid exchange analysis in familial groups of malignant melanoma patients. PG - 237-46 AB - Sister chromatid exchange (SCE) analysis was carried out on peripheral blood lymphocytes of 20 familial malignant melanoma (FMM) and 39 sporadic malignant melanoma (SMM) untreated patients, belonging to 10 and 39 families, respectively. The study was extended to 39 unaffected close relatives of FMM patients, to 187 unaffected close relatives of SMM patients, and to 20 unaffected unrelated individuals (control group), all examined under the same conditions. The mean SCE rates/cell were significantly higher in MM families than in the control group, and in melanoma patients than in their close relatives. The mean SCE levels of FMM and SMM patients, (8.4 +/- 0.8 and 8.0 +/- 0.3, respectively) were similar, and so were the distributions of individuals in classes of increasing SCE values (with a modal value at 7-8 SCEs/cell). The mean SCE levels of close relatives of FMM and SMM patients were also similar (5.4 +/- 0.2 and 5.4 +/- 0.1, respectively, with a modal value at 4-5 SCEs/cell), and slightly higher than in the control group (4.7 +/- 0.2 SCEs/cell). More than 7 SCEs/cell were observed in the majority (41 of 59) of FMM or SMM patients, in a smaller fraction (25 of 227) unaffected relatives, and in none of 20 unrelated unaffected individuals. These observations favor the hypothesis that higher SCE levels may be an expression of constitutional lesions predisposing to this neoplastic disease. FAU - Illeni, M T AU - Illeni MT AD - Istituto Nazionale per lo Studio e la Cura dei Tumori, Milano, Italy. FAU - Rovini, D AU - Rovini D FAU - Grassi, C AU - Grassi C FAU - Lombardo, C AU - Lombardo C FAU - Placucci, M AU - Placucci M FAU - Squicciarini, P AU - Squicciarini P FAU - Cascinelli, N AU - Cascinelli N FAU - Ghidoni, A AU - Ghidoni A LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Cancer Genet Cytogenet JT - Cancer genetics and cytogenetics JID - 7909240 SB - IM MH - Adult MH - Analysis of Variance MH - Female MH - Humans MH - Male MH - Melanoma/*genetics MH - Middle Aged MH - *Sister Chromatid Exchange MH - Smoking/adverse effects EDAT- 1991/06/01 00:00 MHDA- 1991/06/01 00:01 CRDT- 1991/06/01 00:00 PHST- 1991/06/01 00:00 [pubmed] PHST- 1991/06/01 00:01 [medline] PHST- 1991/06/01 00:00 [entrez] AID - 0165-4608(91)90100-9 [pii] AID - 10.1016/0165-4608(91)90100-9 [doi] PST - ppublish SO - Cancer Genet Cytogenet. 1991 Jun;53(2):237-46. doi: 10.1016/0165-4608(91)90100-9.