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Table 3 Significant associations between genomic variants and drug resistance phenotypes identified by variant-based GWAS

From: Genome-wide analysis of Mycobacterium tuberculosis polymorphisms reveals lineage-specific associations with drug resistance

Variant Locus

Variant Position

Type

Known Phenotype Association [13]

Lineage

Observed Phenotype Association (p-value)

PhyC

rrs

1,473,246

inter

STM, AG

2

CAP(2 × 10−31), KAN(1.1 × 10−37)

8

rrs

1,473,246

inter

STM, AG

4

KAN(6.7 × 10−31)

15

rrs

1,473,246

inter

STM, AG

2 + 4

AMK(2.4 × 10−39), CAP(3.9 × 10−48), KAN(6.5 × 10−69), XDRvMDR(5.3 × 10−27)

18

katG

2,155,168

NS

INH

2

XDR(2.1 × 10− 42)

5

katG

2,155,168

NS

INH

4

INH(6.1 × 10−65), MDR(6 × 10−45), XDR(1.5 × 10−29)

9

katG

2,155,168

NS

INH

2 + 4

INH(4.4 × 10–56), MDR(7.4 × 10−25)

9

Rv0197

232,574

NS

Novel

4

XDR(9.5 × 10−62)

0

Rv0197

232,574

NS

Novel

2 + 4

XDR(232,574;3.8 × 10−51)

0

rpoB

761,155

NS

RMP

2

XDR(3.5 × 10− 25)

4

rpoB

761,155

NS

RMP

4

MDR(1.2 × 10−27), PZA(1.9 × 10−28), RMP(2.6 × 10− 42, 7.1 × 10−31, 761,139;3.4 × 10−23), XDR(3.8 × 10− 57)

7

rpoB

761,139

NS

RMP

4

RMP(3.4 × 10−23)

3

rpoB

761,155

NS

RMP

2 + 4

MDR(5 × 10−23), PZA(6 × 10−26), RMP(2 × 10−38), XDR(1.3 × 10− 27)

7

rpoB

761,139

NS

RMP

2 + 4

PZA(4 × 10− 23), RMP(2.2 × 10−29),

7

recF

4047

S

Novel

4

XDR(1.2 × 10− 52)

0

recF

4047

S

Novel

2 + 4

XDR(8.6 × 10−41)

0

Rv1482c-fabG1

1,673,425

inter

INH, ETH

4

INH(1.1 × 10−36)

3

Rv1482c-fabG1

1,673,425

inter

INH, ETH

2 + 4

INH(1.1 × 10− 35)

14

rpsL

781,687

NS

STM

2

STM(3 × 10−27)

4

rpsL

781,687

NS

STM

2 + 4

STM(6.3 × 10−28)

6

argJ

1,867,614

S

Novel

2 + 4

XDR(6.9 × 10−26)

0

gyrA

7570

NS

FQ

4

XDR(8.6 × 10−23)

24

gyrA

7582

NS

FQ

2 + 4

CIP(1.3 × 10−24), FQ(4.6 × 10−22)

44

  1. (p-values < 1E-22) NS = non-synonymous, S = synonymous, inter = intergenic region. Novel associations are given in bold. ‘PhyC’ column refers to the number of associations identified through PhyC analysis for the locus and lineage in question; AMK = Amikacin-resistance, AG = Aminoglycoside-resistance, CAP = Capreomycin-resistance, CIP = Ciprofloxacin-resistance, EMB = Ethambutol-resistance, ETH = Ethionamide-resistance, FQ = Fluoroquinolone-resistance, INH = Isoniazid-resistance, KAN = Kanamycin-resistance, MDR = Multidrug-resistant, OFL = Ofloxacin-resistance, PAN = pan-susceptible (no known drug-resistance), PZA = Pyrazinamide-resistance, RMP = Rifampicin-resistance, STM = Streptomycin-resistance, XDR = Extensively drug-resistant