CYP11B1 and Chronic colitis: In line with this concept, it is our observation that although Cyp11b1‐deficient mice showed increased tumour development during the early phase of chronic colitis (day 35) due to increased inflammation‐driven tumour development, the opposite was seen after the third cycle of DSS (day 56) (Fig. 5C,D), indicating that in already established tumours, glucocorticoid‐mediated immune evasion is essential for their survival.