A considerable amount of LPA in the ovarian cancer ascites is obtained from the peritoneal mesothelial cells.71 Studies on a mouse melanoma model have demonstrated that LPA can suppress the activation and proliferation of CD8+ T‐cells.72 However, the effects of LPA on the T‐cells should be verified in the ovarian cancer ascites. The gene discussed is CD8A; the disease is ovarian carcinoma.