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pfhrp3

Misdiagnosis of imported falciparum malaria from African areas due to an increased prevalence of pfhrp2/pfhrp3 gene deletion: The Djibouti case

September 2, 2020 - 08:33 -- Open Access
Author(s): 
Iriart X, Menard S, Chauvin P, Mohamed HS, Charpentier E, Mohamed MA, Berry A, Aboubaker MH
Reference: 
Emerg Microbes Infect. 2020 Sep 1:1-9

A case of imported falciparum malaria acquired in Djibouti was diagnosed in 2019 in the Toulouse University Hospital (France) by microscopy and a positive P. falciparum specific real-time PCR (qPCR).

Molecular surveillance reveals the presence of pfhrp2 and pfhrp3 gene deletions in Plasmodium falciparum parasite populations in Uganda, 2017–2019

August 27, 2020 - 08:09 -- Open Access
Author(s): 
Agaba B. Bosco, Karen Anderson, Karryn Gresty, et al
Reference: 
Malaria Journal 2020 19:300, 26 August 2020

Histidine-rich protein-2 (HRP2)-based rapid diagnostic tests (RDTs) are the only RDTs recommended for malaria diagnosis in Uganda. However, the emergence of Plasmodium falciparum histidine rich protein 2 and 3 (pfhrp2 and pfhrp3) gene deletions threatens their usefulness as malaria diagnostic and surveillance tools. The pfhrp2 and pfhrp3 gene deletions surveillance was conducted in P. falciparum parasite populations in Uganda.

Multiplex malaria antigen detection by bead-based assay and molecular confirmation by PCR shows no evidence of Pfhrp2 and Pfhrp3 deletion in Haiti

December 3, 2019 - 15:31 -- Open Access
Author(s): 
Camelia Herman, Curtis S. Huber, Sophie Jones, Laura Steinhardt, Mateusz M. Plucinski, Jean F. Lemoine, Michelle Chang, John W. Barnwell, Venkatachalam Udhayakumar and Eric Rogier
Reference: 
Malaria Journal 2019 18:380, 27 November 2019

The Plasmodium falciparum parasite is the only human malaria that produces the histidine-rich protein 2 and 3 (HRP2/3) antigens. Currently, HRP2/3 are widely used in malaria rapid diagnostic tests (RDTs), but several global reports have recently emerged showing genetic deletion of one or both of these antigens in parasites. Deletion of these antigens could pose a major concern for P. falciparum diagnosis in Haiti which currently uses RDTs based solely on the detection of the HRP2/3 antigens.

Medical Condition: 

Systematic review of the status of pfhrp2 and pfhrp3 gene deletion, approaches and methods used for its estimation and reporting in Plasmodium falciparum populations in Africa: review of published studies 2010–2019

November 11, 2019 - 16:08 -- Open Access
Author(s): 
Bosco B. Agaba, Adoke Yeka, Sam Nsobya, Emmanuel Arinaitwe, Joaniter Nankabirwa, Jimmy Opigo, Paul Mbaka, Chae Seung Lim, Joan N. Kalyango, Charles Karamagi and Moses R. Kamya
Reference: 
Malaria Journal 2019 18:355, 6 November 2019

Malaria rapid diagnostic tests based on histidine-rich protein-2 have played a vital role in improving malaria case management and surveillance particularly in Africa, where Plasmodium falciparum is predominant. However, their usefulness has been threatened by the emergence of gene deletion on P. falciparum histidine rich protein 2 (pfhrp2) and P. falciparum histidine rich protein 3 (pfhrp3). 

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