In univariate analysis, grade (p=0.002), Ki-67 score (14% and 20% cut-offs; p<0.001 for both groups), and PR score (cut-off 20%; p<0.001) were the only risk factors that significantly correlated with RS, whereas tumor size, LN status (presence of micrometastasis), and ER score were not found to be significant predictors of RS (Mantel-Haenszel test; table not included). Here, ESR1 is linked to neoplasm.