NCF2 and systemic lupus erythematosus: (d) Genotypic effects of the proxy SNP rs12753665 (r2 = 0.821) for the SLE-associated rs10911363 (NCF2 locus) on expression of DHX9 (ILMN_1690965 probe) in males (p = 0.15) and females (p = 0.06).