Skip to main content

Table 1 Proportion of Pfk13, Pfmdr1 and Pfcrt polymorphisms in day 0, recurrent and recrudescent infections

From: Assessment of molecular markers of anti-malarial drug resistance among children participating in a therapeutic efficacy study in western Kenya

Polymorphism

Pre-treatment (day 0) samples

Recurrent infection samples

Recrudescent samples

Pfk13a

 Samples successfully sequenced

317/323 (98.1%)

88/110 (80.0%)

23/24 (95.8%)

 Wild type (no or mixed mutations detected)

315/317 (99.4%)

87/88 (98.9%)

22/23 (95.7%)

 522C

2/317 (0.6%)

0

0

 578S

6/317 (1.9%)

2/88 (2.3%)

1/23 (4.3%)

Pfmdr1a

 Samples successfully sequenced

320/323 (99.1%)

95/110 (86.4%)

24/24 (100.0%)

 N86

319/320 (99.7%)

94/95 (98.9%)

23/24 (95.8%)

 86 N/Y

1/320 (0.3%)

0

0

 86Y

0

1/95 (1.1%)

1/24 (4.2%)

 Y184

129/320 (40.3%)

36/95 (37.9%)

8/24 (33.3%)

 184Y/F

79/320 (24.7%)

16/95 (16.8%)

5/24 (20.8%)

 184F

112/320 (35.0%)

43/95 (45.3%)

11/24 (45.8%)

 D1246

290/320 (90.6%)

90/95 (94.7%)

22/24 (91.7%)

 1246D/Y

19/320 (5.9%)

3/95 (3.2%)

2/24 (8.3%)

 1246Y

11/320 (3.4%)

2/95 (2.1%)

0

 NYD

203/320 (63.4%)

50/95 (52.6%)

13/24 (54.2%)

 YFD

1/320 (0.3%)

1/95 (1.1%)

1/24 (4.2%)

 NFD

185/320 (57.8%)

58/95 (61.1%)

15/24 (62.5%)

 NFY

18/320 (5.6%)

2/95 (2.1%)

1/24 (4.2%)

 NYY

21/320 (6.6%)

5/95 (5.3%)

2/24 (8.3%)

 YYD

1/320 (0.3%)

0

0

 YFY

0

0

0

 YYY

0

0

0

Pfcrta

 Samples successfully sequenced

318/323 (98.5%)

95/110 (86.4%)

24/24 (100.0%)

 C72

318/318 (100.0%)

95/95 (100.0%)

24/24 (100.0%)

 72S

0

0

0

 M74

314/318 (98.7%)

93/95 (97.9%)

23/24 (95.8%)

 74 M/I

2/318 (0.6%)

0

0

 74I

2/318 (0.6%)

2/95 (2.1%)

1/24 (4.2%)

 N75

312/318 (98.1%)

93/95 (97.9%)

23/24 (95.8%)

 75 N/D

4/318 (1.3%)

0

0

 75E

2/318 (0.6%)

2/95 (2.1%)

1/24 (4.2%)

 K76

312/318 (98.1%)

93/95 (97.9%)

23/24 (95.8%)

 76 K/T

4/318 (1.3%)

0

0

 76T

2/318 (0.6%)

2/95 (2.1%)

1/24 (4.2%)

 CVMNK

316/318 (99.4%)

93/95 (97.9%)

23/24 (95.8%)

 CVIDTb

2/318 (0.6%)

0

0

 CVMDTc

2/318 (0.6%)

0

0

 CVIET

2/318 (0.6%)

2/95 (2.1%)

1/24 (4.2%)

  1. Bold letter denotes an encoded amino acid change; aTotals may not sum due to mixed infections (samples with both wild and mutant codons) which were counted as both wild and mutant haplotypes). bTwo samples yielded the following findings for Pfcrt: C at site 72, M and I at site 74, N and D at site 75, K and T at site 76. These were considered mixed infections with CVMNK and CVIDT. cTwo samples yielded the following findings for Pfcrt: C at site 72, M at site 74, N and D at site 75, K and T at site 76. These were considered mixed infections with CVMNK and CVMDT