High OS and DFS ratio were shown in the low TMPRSS2 expression group of ovarian cancer relative to the elevated expression group, according to the DUKE‐OC, GSE9891 and GSE26712 (205102_at) datasets, while one alteration revealed by dataset GSE26712 (211689_s_at) reversed the correlation of reduced expression with poor DFS of ovarian cancer patients, as depicted in Figure 6D and Table 1. This evidence concerns the gene TMPRSS2 and ovarian cancer.