We first examined the expression of LRRC4 in 5 normal ovarian tissues, 11 low-grade serous ovarian cancer (LGSC), 8 low malignant serous ovarian cancer (LMSC), and 17 HGSC samples using Gene Expression Omnibus (GEO) databases. This evidence concerns the gene LRRC4 and ovarian serous adenocarcinoma.