Evidence map›Paper›PMID 28465622›Full record

ArticleScientific reports2017

Sequence variation in Plasmodium falciparum Histidine Rich Proteins 2 and 3 in Indian isolates: Implications for Malaria Rapid Diagnostic Test Performance.

Praveen Kumar Bharti, Himanshu Singh Chandel, Sri Krishna, Shrikant Nema, Amreen Ahmad, Venkatachalam Udhayakumar, Neeru Singh

Abstract read
In one paragraph

Article in Scientific reports, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
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  7. Article
  8. Article
  9. Low frequency ofFrontiers in epidemiology · 2023
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  11. Review
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  14. A Comprehensive Analysis of the Genetic Diversity ofFrontiers in cellular and infection microbiology · 2021
    Article
  15. Article
  16. Article
  17. Article
  18. Diseases (Basel, Switzerland) · 2020
    Review
  19. Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Praveen Kumar BhartiNational Institute for Research in Tribal Health (NIRTH), Garha, Jabalpur, 482003, India.
Himanshu Singh ChandelNational Institute for Research in Tribal Health (NIRTH), Garha, Jabalpur, 482003, India.
Sri KrishnaNational Institute for Research in Tribal Health (NIRTH), Garha, Jabalpur, 482003, India.
Shrikant NemaNational Institute for Research in Tribal Health (NIRTH), Garha, Jabalpur, 482003, India.
Amreen AhmadNational Institute for Research in Tribal Health (NIRTH), Garha, Jabalpur, 482003, India.
Venkatachalam UdhayakumarMalaria Branch, Division of Parasitic Diseases and Malaria, Center for Global Health, Centers for Disease Control and Prevention, Atlanta, Georgia, 30329, USA.
Neeru SinghNational Institute for Research in Tribal Health (NIRTH), Garha, Jabalpur, 482003, India. neeru.singh@gmail.com.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Commercial malaria rapid diagnostic tests (RDTs) detect P. falciparum histidine rich protein 2 (PfHRP2) and cross react with PfHRP3, a structural homologue. Here, we analysed natural variations in PfHRP2 and PfHRP3 sequences from Indian isolates and correlated these variations with RDT reactivity. A total 1392 P. falciparum positive samples collected from eight endemic states were PCR amplified for Pfhrp2 and Pfhrp3 genes and were sequenced. The deduced protein sequences were analysed for repeat variations and correlated with RDT reactivity. Out of 1392 PCR amplified samples, a single sample was Pfhrp2 negative and two samples were Pfhrp3 negative. Complete Pfhrp2 and Pfhrp3 sequences were obtained for 769 samples and 750 samples, respectively. A total of 16 distinct repeat motifs were observed for Pfhrp2 and 11 for Pfhrp3, including some new repeat types. No correlation was found between variations in the size of Pfhrp2 repeat types 2 and 7, nor between any combinations of repeat motifs, and performance of a commercial RDT at low parasite densities. The findings suggest that sequence diversity in Pfhrp2 and Pfhrp3 genes in Indian isolates is not likely to negatively influence performance of currently used PfHRP2 RDTs.

Indexed as

Antigens, ProtozoanAsian PeopleDiagnostic Tests, RoutineGenetic VariationHumansIndiaMalaria, FalciparumPlasmodium falciparumProtozoan ProteinsAntigens, ProtozoanHRP-2 antigen, Plasmodium falciparumHRP3 protein, Plasmodium falciparumProtozoan Proteins

Identifiers

PMID28465622
PMCPMC5430971

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.