HLA-DRB1 and tuberculosis: Similarly, HLA-DRB1*09, found at a frequency as much as 15 times higher inChinese populations than in the other BRICS countries studied has also beenassociated with susceptibility to TB, especially in East Asian populations.Conversely, HLA-DRB1 alleles *03, *07, *12, and *13 are associated with protectionagainst TB as reported in a meta-analysis that examined studies from 12countries.27