In ovarian cancer tissues group, the results (Figs. 1A and B) showed that 62/149 patients (41.61%) ha asd low expression and 87/149 patients (58.38%) had high expression; however, among patients from whom 11 normal ovarian epithelial tissues stained with NAP1L1 were obtained, 9/11 (81.81%) had low expression and 2/11 (18.18%) had high expression, and there was significant difference between the tumor and normal groups (P < 0.012). This evidence concerns the gene NAP1L1 and ovarian cancer.