an extended haplotype ( specific hla-b , dr , complotype haplotypes in significant linkage disequilibrium ) containing c4b*3 : hla-b15 , dr4 , bf*s , c2*c , c4a*3 , c4b*3 , was found twice ( p less than 0.001 ) among whites with the disease-associated chromosomes .
C0019737
hla-b
C0062818
hla-b15