Evidence map›Paper›PMID 17503085›Full record

ArticleHuman genetics2007

A TNF region haplotype offers protection from typhoid fever in Vietnamese patients.

Sarah J Dunstan, Thi Hue Nguyen, Kirk Rockett, Julian Forton, Andrew P Morris, Mahamadou Diakite, Ngoc Lanh Mai, Thi Phuong Le, Deborah House, Christopher M Parry and 6 more

Open access · greenAbstract read
In one paragraph

Article in Human genetics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
2.9field-weighted citation impact, top 11% 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, 1 synthesis or guideline pooled it, 24 citations in OpenAlex.

  1. Risk Factors for Typhoid Fever: Systematic Review.JMIR public health and surveillance · 2025
    Pooled it
  2. Enterobacteria and host resistance to infection.Mammalian genome : official journal of the International Mammalian Genome Society · 2018
    Review
  3. Article
  4. Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Review
  10. Genetics of susceptibility to infection with enteric pathogens.Current opinion in infectious diseases · 2009
    Review
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

16 authors at 7 institutions in 2 countries.

Sarah J DunstanOxford University Clinical Research Unit, Hospital for Tropical Diseases, 190 Ben Ham Tu, Quan 5, District 5, Ho Chi Minh City, Vietnam. sdunstan@oucru.org
Thi Hue Nguyen
Kirk Rockett
Julian Forton
Andrew P Morris
Mahamadou Diakite
Ngoc Lanh Mai
Thi Phuong Le
Deborah House
Christopher M Parry
Vinh Ha
T Hieu Nguyen
Gordon Dougan
Tinh Hien Tran
Dominic Kwiatowski
Jeremy J Farrar
Hospital for Tropical Diseases · VNUniversity of Oxford · GBCentre for Human Genetics · GBDong Thap Hospital · VNOxford University Clinical Research Unit · VNWellcome Sanger Institute · GBHung Vuong Hospital · VN

Funding

Wellcome Trust 076962Wellcome Trust 077078Wellcome Trust 081682
6 · The paper itself

Abstract

The genomic region surrounding the TNF locus on human chromosome 6 has previously been associated with typhoid fever in Vietnam (Dunstan et al. in J Infect Dis 183:261-268, 2001). We used a haplotypic approach to understand this association further. Eighty single nucleotide polymorphisms (SNPs) spanning a 150 kb region were genotyped in 95 Vietnamese individuals (typhoid case/mother/father trios). A subset of data from 33 SNPs with a minor allele frequency of >4.3% was used to construct haplotypes. Fifteen SNPs, which tagged the 42 constructed haplotypes were selected. The haplotype tagging SNPs (T1-T15) were genotyped in 380 confirmed typhoid cases and 380 Vietnamese ethnically matched controls. Allelic frequencies of seven SNPs (T1, T2, T3, T5, T6, T7, T8) were significantly different between typhoid cases and controls. Logistic regression results support the hypothesis that there is just one signal associated with disease at this locus. Haplotype-based analysis of the tag SNPs provided positive evidence of association with typhoid (posterior probability 0.821). The analysis highlighted a low-risk cluster of haplotypes that each carry the minor allele of T1 or T7, but not both, and otherwise carry the combination of alleles *12122*1111 at T1-T11, further supporting the one associated signal hypothesis. Finally, individuals that carry the typhoid fever protective haplotype *12122*1111 also produce a relatively low TNF-alpha response to LPS.

Indexed as

Case-Control StudiesChromosome MappingCluster AnalysisFamilyFemaleGenetic Predisposition to DiseaseHaplotypesHumansLinkage DisequilibriumMalePolymorphism, Single NucleotideTumor Necrosis Factor-alphaTyphoid FeverVietnamTumor Necrosis Factor-alpha

Identifiers

PMID17503085
PMCPMC2656995
OpenAlexW2027641132

What OpenQuestion holds

Textmetadata
LicenceTDM
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.