PTGS2 and hepatocellular carcinoma: Meanwhile, our result of ethnicity subgroup analysis implies that the association is also evident in Chinese population (AA vs GG: OR = 1.472, 95%CL 1.180–1.838, PA = 0.001, GA+AA vs GG:OR = 1.290, 95%CL 1.069–1.555, PA = 0.008).Thus, we can deduce that COX2-1195G/A tends to facilitate the development of HCC to some extent, but this result was still required further studies to confirm the correlation with HCC risk.