From: Prevalence of extensively drug-resistant tuberculosis in a Chinese multidrug-resistant TB cohort after redefinition
Locus
Mutation
No. of isolates with corresponding MIC (μg/ml)
Total (%)
2
4
8
 > 8
rplC
Cys154Arg
5
12 (40.0)
23S rRNA
G2270C
1
1 (3.3)
G2270T
3 (10.0)
Wild-type
7
6
14 (46.7)
Total
14
30 (100.0)