Volume 102, Issue 2
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



Given that the C580Y polymorphism in the propeller domain of the gene () was documented in Guyana, monitoring for mutations associated with antimalarial resistance was undertaken in neighboring Roraima state in Brazil. Polymorphisms in the and genes were investigated in 275 samples. No mutations were observed. Triple mutants 184F, 1042D, and 1246Y were observed in 100% of the samples successfully sequenced for the gene, with 20.1% of these having an additional mutation at codon 1034C. Among them, 2.5% of samples harbored two copies of the gene. We found no evidence of the spread of C580Y parasites to Roraima state, Brazil. As previously observed, the 184F, 1042D, and 1246Y mutations in the gene appear to be fixed in this region. Continued molecular surveillance is essential to detect any potential migration or local emergence of artemisinin-resistant mutation.


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  • Received : 09 Oct 2019
  • Accepted : 04 Nov 2019
  • Published online : 12 Dec 2019

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