We further analyzed the ROC curve of serum MLK7-AS1 levels to assess its diagnostic value and found that serum MLK7-AS1 level could differentiate ovarian cancer patients from healthy controls (Fig. 1g), with an area under the curve (AUC) of 0.9565 (95% confidence interval [CI]: 0.915–0.998, P < 0.001). This evidence concerns the gene MAP3K20 and ovarian carcinoma.