The lists with the best discriminatory power include BTN3A2, CD300E, ENDOD1, FMN1, KAT2B, ODC1, PBX1and UBE2H in CD,and IFI44, MX1, ORA2A9P, PF4and RFC1 in RA. The gene discussed is ENDOD1; the disease is rheumatoid arthritis.