Abstract：
:Fifty-nine colonic adenomas and 6 hyperplastic colonic polyps were analyzed by single-strand conformation polymorphism analysis for mutations in the adenomatous polyposis coli gene (APC). Frameshifts and premature stop codons in at least one copy of APC were detected in 25 of these adenomas. Five adenomas carried 2 APC mutations. No mutations in APC were found in any of the 6 hyperplastic polyps. The detection of APC mutations increased with size and degree of dysplasia and in rectal as compared to colonic adenomas, although the association was not statistically significant. The frequency of detectable APC mutations was higher in tubulovillous and villous adenomas (10 of 13) than in tubular adenomas (15 of 45) (odds ratio, 6.67; 95% confidence limits, 1.39-41.83; P = 0.005). The significance of the association between the detection of APC mutations and a villous architecture was confirmed in multivariate analysis (relative risk, 6.67; 95% confidence limits, 1.54-28.8; P = 0.005). In conclusion, APC mutation plays a role in adenoma progression; its frequency is significantly higher in lesions with a more villous morphology.
journal_name
Cancer Resjournal_title
Cancer researchauthors
De Benedetti L,Sciallero S,Gismondi V,James R,Bafico A,Biticchi R,Masetti E,Bonelli L,Heouaine A,Picasso Msubject
Has Abstract,Author List Incompletepub_date
1994-07-01 00:00:00pages
3553-6issue
13eissn
0008-5472issn
1538-7445journal_volume
54pub_type
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