Evidence map›Paper›PMID 26834831›Full record

ArticleEvolutionary applications2016

Whole genome sequencing shows sleeping sickness relapse is due to parasite regrowth and not reinfection.

Joshua B Richardson, Benjamin Evans, Patient P Pyana, Nick Van Reet, Mark Sistrom, Philippe Büscher, Serap Aksoy, Adalgisa Caccone

Open access · goldAbstract read
In one paragraph

Article in Evolutionary applications, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed
0.7field-weighted citation impact, top 27% 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

10 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Two-Year Follow-Up ofDiagnostics (Basel, Switzerland) · 2022
    Article
  5. Review
  6. Lipid and fatty acid metabolism in trypanosomatids.Microbial cell (Graz, Austria) · 2021
    Review
  7. Review
  8. Article
  9. Adipose Tissue: A Safe Haven for Parasites?Trends in parasitology · 2017
    Review
  10. Article
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 5 institutions in 3 countries.

Joshua B RichardsonDepartment of Ecology and Evolutionary Biology Yale University New Haven CT USA.
Benjamin EvansDepartment of Ecology and Evolutionary Biology Yale University New Haven CT USA.
Patient P PyanaDepartment de Parasitologie Institut National de Recherche Biomedicale Kinshasa Gombe Democratic Republic of the Congo.
Nick Van ReetDepartment of Biomedical Sciences Institute of Tropical Medicine Antwerp Belgium.
Mark SistromSchool of Natural Sciences University of California Merced Merced CA USA.
Philippe BüscherDepartment of Biomedical Sciences Institute of Tropical Medicine Antwerp Belgium.
Serap AksoyDepartment of Epidemiology and Public Health Yale School of Public Health New Haven CT USA.
Adalgisa CacconeDepartment of Ecology and Evolutionary Biology Yale University New Haven CT USA.
Yale University · USInstituut voor Tropische Geneeskunde · BENational Institute of Biomedical Research · CDUniversity of California, Merced · USYale New Haven Health System · US

Funding

Evolutionary Genetics of Tsetse and Its SymbiontsR01AI068932 · NIAID · YALE UNIVERSITY · PI AKSOY, SERAP, CACCONE, ADALGISA · 2008 to 2018
$7.0M
Training in Parasitology and Vector BiologyT32AI007404 · NIAID · YALE UNIVERSITY · PI TSCHUDI, CHRISTIAN · 1991 to 2017
$3.8M
Next generation sequencing of East African trypanosomes to expand the molecular eR21AI094615 · NIAID · YALE UNIVERSITY · PI AKSOY, SERAP, CACCONE, ADALGISA · 2011 to 2012
$459k
Factors In Emergence of New Sleeping Sickness Foci In UgandaR03TW008755 · FIC · YALE UNIVERSITY · PI AKSOY, SERAP · 2011 to 2013
$172k
FIC NIH HHS R03 TW008755NIAID NIH HHS R01 AI068932NIAID NIH HHS R21 AI094615NIAID NIH HHS T32 AI007404
6 · The paper itself

Abstract

The trypanosome Trypanosoma brucei gambiense (Tbg) is a cause of human African trypanosomiasis (HAT) endemic to many parts of sub-Saharan Africa. The disease is almost invariably fatal if untreated and there is no vaccine, which makes monitoring and managing drug resistance highly relevant. A recent study of HAT cases from the Democratic Republic of the Congo reported a high incidence of relapses in patients treated with melarsoprol. Of the 19 Tbg strains isolated from patients enrolled in this study, four pairs were obtained from the same patient before treatment and after relapse. We used whole genome sequencing to investigate whether these patients were infected with a new strain, or if the original strain had regrown to pathogenic levels. Clustering analysis of 5938 single nucleotide polymorphisms supports the hypothesis of regrowth of the original strain, as we found that strains isolated before and after treatment from the same patient were more similar to each other than to other isolates. We also identified 23 novel genes that could affect melarsoprol sensitivity, representing a promising new set of targets for future functional studies. This work exemplifies the utility of using evolutionary approaches to provide novel insights and tools for disease control.

Indexed as

drug resistancehuman African trypanosomiasismelarsoprolpopulation genomicsTrypanosoma brucei gambiensewhole genome sequencing

Identifiers

PMID26834831
PMCPMC4721075
OpenAlexW2178083107

What OpenQuestion holds

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LicenceCC BY
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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.