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Table 2 Distribution (number and proportion) of genotypes (kelch13 mutations, Pfmdr1 and Pfpm2 gene copy numbers) detected in Plasmodium falciparum isolates collected from Southeast Asia and Africa in 2014–2015

From: African isolates show a high proportion of multiple copies of the Plasmodium falciparum plasmepsin-2 gene, a piperaquine resistance marker

Locus

Allele/haplotype

Number of isolates (%) detected in

P value

Asia (N = 82)

Africa (N = 355)

kelch 13

ART

46 (67.6)

0 (0.0)

< 10−4±

OTH

1 (1.5)

10 (3.0)

WT

21 (30.9)

322 (97.0)

Pfpm2

Single copy

68 (86.1)

218 (73.2)

0.02Â¥

Multiple copies

11 (13.9)

80 (26.8)

Pfmdr1

Single copy

74 (93.7)

240 (78.9)

0.002Â¥

Multiple copies

5 (6.3)

64 (21.1)

Pfpm2/Pfmdr1

Single copy/single copy

64 (81.0)

189 (63.4)

0.009±

Single copy/multiple copies

4 (5.1)

29 (9.7)

Multiple copies/single copy

10 (12.7)

47 (15.8)

Multiple copies/multiple copies

1 (1.3)

33 (11.1)

kelch 13/Pfpm2/Pfmdr1

ART/multiple copies/single copy

7 (10.8)

0 (0.0)

< 10−4±

WT/multiple copies/single copy

2 (3.0)

43 (14.7)

ART/others

38 (57.5)

0 (0.0)

WT/others

18 (27.3)

241 (82.5)

  1. ART: validated or candidate kelch 13 mutations; WT: kelch 13 Wild type, OTH: kelch 13 mutations with unknown association with artemisinin resistance (detailed in Tables 3 and 4)
  2. Italic font denotes the allele or haplotype associate with drug resistance. P-value (Chi squared test± or Fischer exact test¥)