Table 1: Patterns of amino acid changes and mutations in rpoB gene.

Number of isolates (%)Amino acid changes in rpoB geneMTBDRplus assay RIF mutation patterns (rpoB gene)Finding

14 (20.3%)No changeWT
2 (2.9%)Not knownΔ WT8
44 (63.8%)rpoBS531L (Ser-Leu)Δ WT8, MUT3
3 (4.3%)Not knownΔWT7
2 (2.9%)rpoBH526Y (His-Tyr)ΔWT7, MUT2A
1 (1.4%)Not knownΔWT5, 6
3 (4.3%)rpoBD516V (Asp-Val)Δ WT3,4, MUT1