MUC2 and mismatch repair cancer syndrome 1: When only stage II and III patients were analyzed in bivariate Cox regression models, presence of MUC2 showed significant association with PFS (HR 2.05, 95 % CI 1.29–2.35, p = 0.002), while MMR deficiency did not (HR 1.12, 95 % CI 0.35–3.55, p = 0.85).