Frequencies of HLA-DRB1-DQB1 blocks in 234 Mexican admixed individuals (468 haplotypes).

Blocks of each ancestry (Amerindian, Caucasian, Caucasian shared with other populations, African and Asian) were defined as those found in original populations with H.F. >1,0%, and not found in other native human groups in frequencies higher than 1,0%. We consider t value must be ≥2.0 to denote statistically significant association and thus validate Δ′ (shaded values).† Similar to DQB1*05∶02 with a silent mutation at codon 133 cgg>cga.