Skip to main content

Table 2 Resistance phenotype and ddPCR results of eight live MTB strains

From: Development of a multiplex droplet digital PCR method for detection and monitoring of Mycobacterium tuberculosis and drug-resistant tuberculosis

Sample No.

Phenotypic resistance (Lowenstein-Jensen medium)

Molecular resistance (ddPCR)

Discrepancies between phenotype and genotype

Results of confirmation using Sanger sequencing

T-1

INH, RIF

katG, rpoB

  

T-2

INH, RIF, EMB, SM

katG, rpoB

EMB; SM

embB (M306V, M306I) and rpsL (K43R): ND

T-3

INH, RIF, PZA

rpoB, embB

INH; embB

inhA (C(-15)T) and katG (S315T): ND

embB (M306I): D

T-4

INH, RIF

inhA, rpoB

  

T-5

INH, RIF, SM

katG, rpoB, gyrA, rpsL

gyrA

gyrA (D94G): D

T-6

INH, RIF, EMB

katG, rpoB

EMB

embB (M306V, M306I): ND

T-7

INH, RIF, EMB, SM

katG, rpoB, embB, gyrA, rpsL

gyrA

gyrA (D94G): D

T-8

INH, RIF, PZA

katG, rpoB

  
  1. ND, not detected; D, detected