SIK1, SIK2 (QIK) and SIK3 (QSK) have been reported to have a role in metastasis in gastric ADCs (Selvik et al, 2014) and mitotic progression in prostate and ovarian cancers (Ahmed et al, 2010; Chen et al, 2014; Bon et al, 2015). Here, SIK3 is linked to ovarian cancer.