In the previous study by Mittal et al., the frequency of −196 to −174 del polymorphism of the TLR2 gene was compared between PTB cases and healthy controls in population of Agra (Uttar Pradesh), and the similar allele frequencies were reported in both cases and controls; no significant difference was observed in genotype frequencies of TB patients and healthy controls (Mittal et al., 2018). This evidence concerns the gene TLR2 and tuberculosis.