AGBL4 and multidrug-resistant tuberculosis: In a recently PPK study on the use of BDQ in Chinese MDR-TB patients, gamma-glutamyl transferase (GGT) and the single-nucleotide polymorphism (SNP) rs319952 in the AGBL4 gene were found to be significantly associated with the CL/F, while the abovementioned covariates are excluded (Zou et al., 2022).