In addition, there are data from TB patients in Vietnam showing an association between individuals with a T597C allele in the TLR2 gene and susceptibility to infection by the Lineage 2/Beijing genotype (117); and an association of individuals with an SNP in the leukotriene A4 hydrolase (LTA4H) promoter with an excess of inflammation and TB severity (156). This evidence concerns the gene LTA4H and infection.