At last, 4 SNPs were assigned to strong evidence with predisposition to 6 human diseases (9 associations: IL-17F rs1889570 in asthma; IL-17A rs2275913 in lung cancer, cervical cancer, RA, SpA; IL-17F rs763780 in cervical cancer, MS, SpA; IL-17A rs8193037 in lung cancer), moderate to 2 SNPs and 2 cancer as well as 3 noncancerous diseases, weak to 5 SNPs and 1 cancer as well as 9 noncancerous diseases. The gene discussed is IL17A; the disease is rheumatoid arthritis.