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. 2014 May 5;7:111–116. doi: 10.2147/IDR.S60906

Table 1.

Comparison of mutation frequencies of single nucleotide polymorphisms in the pfdhfr, pfmdr1, pfcrt, and pfATP6 genes associated with drug-resistance between samples collected from Plasmodium falciparum-infected patients working/living in mining areas and villagers (nonminers)

Gene and positions % mutation in miners % mutation in villagers
pfdhfr
 A16V 0% (n=27) 0% (n=30)a
 N51I 100% (n=27) 100% (n=30)a
 C59R 0% (n=26) 0% (n=30)a
 S108N 100% (n=28) 100% (n=30)a
 I164L 0% (n=27) 0% (n=30)a
pfmdr1
 N86Y 0% (n=27) 0% (n=40)b
 Y184F 100% (n=27) 100% (n=40)b
 S1034C 96% (n=26) 95% (n=40)b
 N1042D 100% (n=28) 100% (n=40)b
 D1246Y 100% (n=28) 100% (n=40)b
pfcrt
 K76T 100% (n=28) 100% (n=40)b
pfATP6
 L263E 0% (n=28) 0% (n=24)c
 A623E 0% (n=27) 0% (n=24)c
 S769N 0% (n=27) 0% (n=24)c

Notes:

a

Isolates from 2002 (unpublished data);

b

isolates from 2005–2006 (data from Adhin et al19);

c

isolates from 2002–2006 (data from Adhin et al13). The letters are abbreviations for different amino acids in the pfdhfr, pfmdr1, and pfcrt gene products. n represents the number of successfully amplified samples for the respective position in each study.