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Development and Clinical Validation of Iso-IMRS: A Novel Diagnostic Assay for P. falciparum Malaria

January 20, 2021 - 07:05 -- Open Access
Kolluri N, Kamath S, Lally P, Zanna M, Galagan J, Gitaka J, Kamita M, Cabodi M, Lolabattu SR, Klapperich CM
Anal Chem. 2021 Jan 19

In many countries targeting malaria elimination, persistent malaria infections can have parasite loads significantly below the lower limit of detection (LLOD) of standard diagnostic techniques, making them difficult to identify and treat. The most sensitive diagnostic methods involve amplification and detection of Plasmodium DNA by polymerase chain reaction (PCR), which requires expensive thermal cycling equipment and is difficult to deploy in resource-limited settings. Isothermal DNA amplification assays have been developed, but they require complex primer design, resulting in high nonspecific amplification, and show a decrease in sensitivity than PCR methods. Here, we have used a computational approach to design a novel isothermal amplification assay with a simple primer design to amplify P. falciparum DNA with analytical sensitivity comparable to PCR.

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