ATM and ovarian cancer: At the same time, we did finda negative relationship between ATM and miR-203a-3p in our clinical investigation, and the higher expression of ATM predicted a poor prognosis in ovarian cancer patients according to a univariate Cox regression model, highlighting the possible protective role of miR-203a-3p in ovarian cancer via its mediation of ATM. However, the results of the multivariate analysis showed that ATM was associated with prognosis, while miR-203a-3p was not associated with prognosis.