FKBP4 and cancer: The mechanisms by which FKBP52 promotes cell proliferation in cancer cells include stabilization of ERα (Habara et al, 2022), dimerization of ARs (Maeda et al, 2022), and promotion of nuclear translocation of RelA (Erlejman et al, 2014) and IKK complex formation (Zong et al, 2021).