HLA-B and infection: The top SNP, rs4418214 (p = 3.6×10−11, odds ratio (OR) for the C allele = 1.52) has previously been associated with control of HIV-1 viral load [8], with the C allele tagging the classical HLA-B alleles 57:01 and 27:05, both known to associate with lower viral load and longer survival after infection.