Table 1

KRAS mutations and progression of preneoplastic lesions

KRAS mutationProgression after 72 moaTotal
ProgressedNo changeRegressed
Baseline
Absent106844122
Present213520
Total (P = 0.934)128149142
72 Mo
Absent106539114
Present113822
Total (P = 0.446)117847136b
  • a Progression includes the following situations: atrophy → IM; within IM: small intestinal metaplasia → colonic intestinal metaplasia.

  • b KRAS mutation status was determined from 136 of 142 biopsies.