TFF1 and neoplasm: 4 wk after Cre-recombinase induction, comparison of tumor mass and numbers showed significant reduction in tumor burden in the resulting Gp130FF; Yap1KO mice compared with the vehicle-treated Gp130FF; Tff1:CreERT2; Yap1fl/fl mice that had not received tamoxifen (referred to as to as Gp130FF; Yap1WTFig 3H).