To try to shed light on the mechanism of resistance of M. tuberculosis to IQG-607, its inhibitory activity against MDR-TB clinical isolates harboring the KatG(S315T) mutation was evaluated (the description of inhA promoter, katG and rpoB gene mutations of these isolates are described in Table 1 of Abbadi et al., 2018). This evidence concerns the gene INHA and tuberculosis.