Evidence map›Paper›PMID 27982132›Full record

ArticleScientific reports2016

Sensitive and accurate quantification of human malaria parasites using droplet digital PCR (ddPCR).

Cristian Koepfli, Wang Nguitragool, Natalie E Hofmann, Leanne J Robinson, Maria Ome-Kaius, Jetsumon Sattabongkot, Ingrid Felger, Ivo Mueller

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 61 papers.

0numbers the graph read from it
0cells of the map it votes in
61citing papers in PubMed
10.0field-weighted citation impact, top 2% of its field
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

61 citing papers in PubMed, 133 citations in OpenAlex.

  1. Trial
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Review
  9. Evolution ofJournal of parasitology research · 2026
    Review
  10. Article
  11. Article
  12. DetectingPathogens (Basel, Switzerland) · 2024
    Review
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article

1 more citing papers are in PubMed but not listed here.

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

8 authors at 7 institutions in 5 countries.

Cristian KoepfliWalter &Eliza Hall Institute, Parkville, Australia.
Wang NguitragoolFaculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Natalie E HofmannSwiss Tropical and Public Health Institute, Basel, Switzerland.
Leanne J RobinsonWalter &Eliza Hall Institute, Parkville, Australia.
Maria Ome-KaiusPapua New Guinea Institute of Medical Research, Madang, Papua New Guinea.
Jetsumon SattabongkotFaculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Ingrid FelgerSwiss Tropical and Public Health Institute, Basel, Switzerland.
Ivo MuellerWalter &Eliza Hall Institute, Parkville, Australia.
Papua New Guinea Institute of Medical Research · PGInstitut Pasteur · FRMahidol Oxford Tropical Medicine Research Unit · THMahidol University · THSwiss Tropical and Public Health Institute · CHUniversity of Basel · CHUniversity of Melbourne · AU

Funding

TransmissionU19AI089686 · NIAID · CASE WESTERN RESERVE UNIVERSITY · PI KAZURA, JAMES WALTER · 2010 to 2016
$9.9M
NIAID NIH HHS U19 AI089686
6 · The paper itself

Abstract

Accurate quantification of parasite density in the human host is essential for understanding the biology and pathology of malaria. Semi-quantitative molecular methods are widely applied, but the need for an external standard curve makes it difficult to compare parasite density estimates across studies. Droplet digital PCR (ddPCR) allows direct quantification without the need for a standard curve. ddPCR was used to diagnose and quantify P. falciparum and P. vivax in clinical patients as well as in asymptomatic samples. ddPCR yielded highly reproducible measurements across the range of parasite densities observed in humans, and showed higher sensitivity than qPCR to diagnose P. falciparum, and equal sensitivity for P. vivax. Correspondence in quantification was very high (>0.95) between qPCR and ddPCR. Quantification between technical replicates by ddPCR differed 1.5-1.7-fold, compared to 2.4-6.2-fold by qPCR. ddPCR facilitates parasite quantification for studies where absolute densities are required, and will increase comparability of results reported from different laboratories.

Indexed as

DNA, ProtozoanHumansMalariaMicroscopyPlasmodium falciparumPlasmodium vivaxReal-Time Polymerase Chain ReactionRNA, Ribosomal, 18SDNA, ProtozoanRNA, Ribosomal, 18S

Identifiers

PMID27982132
PMCPMC5159915
OpenAlexW2563105997

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

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.