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The katG and inhA gene mutations of 320 INH-resistant Mtb strains.
| Mutant codon(s) | Mutation type | Number | Frequency (%) |
|---|---|---|---|
| katG | Ser315Thr | 305 | 70.5 |
| Ser315Asn | 18 | 4.2 | |
| inhA | − 15 (C → T) | 98 | 22.7 |
| katG + inhA | Ser315Thr, − 15 (C → T) | 9 | 0.5 |
| Ser315Asn, − 15 (C → T) | 2 | 2.1 | |
| Total | 432 | 100 |
