PT - JOURNAL ARTICLE AU - Peltomäki, Päivi AU - Lothe, Ragnhild A. AU - Aaltonen, Lauri A. AU - Pylkkänen, Lea AU - Nyström-Lahti, Minna AU - Seruca, Raquel AU - David, Leonor AU - Holm, Ruth AU - Ryberg, David AU - Haugen, Aage AU - Brøgger, Anton AU - Børresen, Anne-Lise AU - de la Chapelle, Albert TI - Microsatellite Instability Is Associated with Tumors That Characterize the Hereditary Non-Polyposis Colorectal Carcinoma Syndrome DP - 1993 Dec 15 TA - Cancer Research PG - 5853--5855 VI - 53 IP - 24 4099 - http://cancerres.aacrjournals.org/content/53/24/5853.short 4100 - http://cancerres.aacrjournals.org/content/53/24/5853.full SO - Cancer Res1993 Dec 15; 53 AB - Microsatellite instability implying multiple replication errors (RER+ phenotype) characterizes a proportion of colorectal carcinomas, particularly those from patients with the hereditary non-polyposis colorectal carcinoma syndrome. We studied the incidence of microsatellite instability in more than 500 sporadic tumors representing 6 different types of cancer. Apart from colorectal carcinoma [see the paper by Lothe et al. (Cancer Res., 53: 5849–5852, 1993)] the RER+ phenotype was found in 18% (6 of 33) of gastric carcinomas and 22% (4 of 18) of endometrial carcinomas. In contrast, no evidence of this abnormality was detected in cancers of the lung (N = 85), breast (N = 84), and testis (N = 86). Importantly, the first three cancers, as opposed to the latter three, are characteristic of the hereditary non-polyposis colorectal carcinoma syndrome. These findings suggest that the cancers belonging to the hereditary non-polyposis colorectal carcinoma tumor spectrum may have essential pathogenetic steps in common, including a tendency to multiple replication errors. ©1993 American Association for Cancer Research.