To the Editor: In their report on the Colorectal Adenoma/CarcinomaPrevention Programme 2 (CAPP2) study, Burn et al. (Dec. 11 issue)1conclude that the use of aspirin, resistant starch, or bothhad no effect in reducing the risk of adenoma and carcinomaamong carriers of the Lynch syndrome, on the basis of Cox proportional-hazardsmodels adjusted for age and sex. However, the effect of thegenotype-by-environment interaction on the risk of colorectalneoplasia was neglected.
According to two studies,2,3 germline mutations or polymorphismsin DNA mismatch-repair genes may be associated with a significantdifference in the risk of colorectal cancer. . . . [Full Text of this Article]
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