CDK8 and cancer: CDK8 has been attributed oncogenic functions in different cancers, including Wnt‐dependent colorectal cancer, melanoma, breast and prostate cancer, acute myeloid leukaemia, and B‐cell leukaemia (Firestein et al, 2008; Morris et al, 2008; Kapoor et al, 2010; Pelish et al, 2015; McDermott et al, 2017; Nakamura et al, 2018; Menzl et al, 2019).