MUC2 and cancer: Specifically, a comparison of the normal controls and the cancer cases showed the following differences in the association ratios between gastric and short rare MUC2-MS6 alleles in younger- and older-patients: younger, 7.79 (CI: 0.94–64.53; p = 0.026) vs. older 5.15 (CI: 1.48–17.93; p = 0.004) (Table S2–3).