Table 3.

Specific gene mutations in resistant strains

Gene locus	Band	Gene region/mutation	aRIF monoresistant	bINH monoresistant	cMDR
rpoB
	WT1	506–509
	WT2	510–513
	WT3	513–517			d1
	WT4	516–519
	WT5	518–522
	WT6	521–525
	WT7	526–529			d3
	WT8	530–533	1		1
	MUT1	D516V			6
	MUT2A	H526Y			d3
	MUT2B	H526D
	MUT3	S531 L	1		1
katG
	WT	315		d11	d4
	MUT1	S315 T1		14	10
	MUT2	S315 T2
inhA
	WT1	−15/−16		d4	d1
	WT2	−8			d1
	MUT1	C15T		d4	d1
	MUT2	A16G
	MUT3A	T8C			6
	MUT3B	T8A

WT wild type band, MUT mutant band, RIF rifampicin, INH isoniazid, MDR multi-drug resistance

^aIsolates with mutation(s) in the rpoB gene and none in the inhApro or katG gene

^bIsolates with mutation(s) in the inhApro region and/or in the katG gene, with no mutation in the rpoB gene

^cIsolates with mutations in the rpoB gene and inhApro and/or katG gene

^dNumber of isolates that had presence of mutation band and the absence of corresponding wild type band