Evidence map›Paper›PMID 30409989›Full record

ArticleScientific reports2018

A complete Leishmania donovani reference genome identifies novel genetic variations associated with virulence.

Patrick Lypaczewski, Johanna Hoshizaki, Wen-Wei Zhang, Laura-Isobel McCall, John Torcivia-Rodriguez, Vahan Simonyan, Amanpreet Kaur, Ken Dewar, Greg Matlashewski

Open access · goldAbstract readComparative Study
In one paragraph

Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
6.0field-weighted citation impact, top 4% 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

31 citing papers in PubMed, 53 citations in OpenAlex.

  1. Article
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  5. Leishmaniasis.Nature reviews. Disease primers · 2025
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  6. Improved assembly of theMicrobiology resource announcements · 2025
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  12. Investigating theTropical medicine and infectious disease · 2022
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  15. An intraspeciesiScience · 2022
    Article
  16. Genome deletions to overcome the directed loss of gene function inFrontiers in cellular and infection microbiology · 2022
    Article
  17. Article
  18. Genome Assembly and Genome Annotation ofJournal of parasitology research · 2022
    Article
  19. Article
  20. 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

9 authors at 3 institutions in 2 countries.

Patrick LypaczewskiDepartment of Microbiology and Immunology, McGill University, 3775 University Street, H3A 2B4, Montreal, Quebec, Canada.
Johanna HoshizakiDepartment of Microbiology and Immunology, McGill University, 3775 University Street, H3A 2B4, Montreal, Quebec, Canada.
Wen-Wei ZhangDepartment of Microbiology and Immunology, McGill University, 3775 University Street, H3A 2B4, Montreal, Quebec, Canada.
Laura-Isobel McCallDepartment of Microbiology and Immunology, McGill University, 3775 University Street, H3A 2B4, Montreal, Quebec, Canada.
John Torcivia-RodriguezCenter for Biologics Evaluation and Research, Food and Drug Administration, Maryland, USA.ORCID http://orcid.org/0000-0002-9307-5778
Vahan SimonyanCenter for Biologics Evaluation and Research, Food and Drug Administration, Maryland, USA.ORCID http://orcid.org/0000-0002-4868-4785
Amanpreet KaurDepartment of Human Genetics, McGill University, Montreal, Quebec, Canada.
Ken DewarDepartment of Human Genetics, McGill University, Montreal, Quebec, Canada.
Greg MatlashewskiDepartment of Microbiology and Immunology, McGill University, 3775 University Street, H3A 2B4, Montreal, Quebec, Canada. greg.matlashewski@mcgill.ca.
McGill University · CACenter for Biologics Evaluation and Research · USMcGill University and Génome Québec Innovation Centre · CA

Funding

CIHR MOP235928
6 · The paper itself

Abstract

Leishmania donovani is responsible for visceral leishmaniasis, a neglected and lethal parasitic disease with limited treatment options and no vaccine. The study of L. donovani has been hindered by the lack of a high-quality reference genome and this can impact experimental outcomes including the identification of virulence genes, drug targets and vaccine development. We therefore generated a complete genome assembly by deep sequencing using a combination of second generation (Illumina) and third generation (PacBio) sequencing technologies. Compared to the current L. donovani assembly, the genome assembly reported within resulted in the closure over 2,000 gaps, the extension of several chromosomes up to telomeric repeats and the re-annotation of close to 15% of protein coding genes and the annotation of hundreds of non-coding RNA genes. It was possible to correctly assemble the highly repetitive A2 and Amastin virulence gene clusters. A comparative sequence analysis using the improved reference genome confirmed 70 published and identified 15 novel genomic differences between closely related visceral and atypical cutaneous disease-causing L. donovani strains providing a more complete map of genes associated with virulence and visceral organ tropism. Bioinformatic tools including protein variation effect analyzer and basic local alignment search tool were used to prioritize a list of potential virulence genes based on mutation severity, gene conservation and function. This complete genome assembly and novel information on virulence factors will support the identification of new drug targets and the development of a vaccine for L. donovani.

Indexed as

AnimalsGenetic VariationHigh-Throughput Nucleotide SequencingLeishmania donovaniLeishmaniasis, VisceralMolecular Sequence AnnotationSri LankaTropismVirulence FactorsWhole Genome SequencingVirulence Factors

Identifiers

PMID30409989
PMCPMC6224596
OpenAlexW2898615051

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.