SIK1 and ovarian cancer: Following the publication of this paper, a concerned reader drew to the Editor's attention that, regarding the western blots shown in Fig. 1A, where the expression levels of salt-inducible kinase 1 were detected in ovarian cancer tissues, the β-actin loading controls for patients 4, 6 and 7 were strikingly similar in appearance [also note that, in view of having not received a timely response to this query from the authors, an Expression of concern (DOI: 10.3892/ijmm.2025.5627) was published for this paper].