Evidence map›Paper›PMID 24774100›Full record

ArticleBMC cancer2014

Gastric Helicobacter pylori infection associates with an increased risk of colorectal polyps in African Americans.

Hassan Brim, Marwah Zahaf, Adeyinka O Laiyemo, Mehdi Nouraie, Guillermo I Pérez-Pérez, Duane T Smoot, Edward Lee, Hadie Razjouyan, Hassan Ashktorab

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed, 2 pooled it
3.5field-weighted citation impact, top 8% 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

27 citing papers in PubMed, 2 syntheses or guidelines pooled it, 46 citations in OpenAlex.

  1. Association BetweenFrontiers in medicine · 2021
    Pooled it
  2. Pooled it
  3. Beyond the Stomach: Exploring the Role ofExpert reviews in molecular medicine · 2026
    Review
  4. Observational
  5. Review
  6. EClinicalMedicine · 2025
    Article
  7. Article
  8. Gastroenterology and hepatology from bed to bench · 2025
    Article
  9. Association of Antibody Responses toPathogens (Basel, Switzerland) · 2024
    Article
  10. Article
  11. Article
  12. The Association between Helicobacter pylori and Colorectal Neoplasia.Medical principles and practice : international journal of the Kuwait University, Health Science Centre · 2023
    Article
  13. Article
  14. Article
  15. World journal of gastroenterology · 2020
    Article
  16. Article
  17. Article
  18. Przeglad gastroenterologiczny · 2019
    Article
  19. Article
  20. Helicobacter pylori is associated with increased risk of serrated colonic polyps: Analysis of serrated polyp risk factors.Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology · 2018
    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 1 country.

Hassan Brim
Marwah Zahaf
Adeyinka O Laiyemo
Mehdi Nouraie
Guillermo I Pérez-Pérez
Duane T Smoot
Edward Lee
Hadie Razjouyan
Hassan AshktorabDepartment of Medicine and Cancer Center, Howard University, Washington, DC, USA. hashktorab@howard.edu.
Howard University · USMonmouth Medical Center · USNew York University · US

Funding

PROTEOMICS CORE FACILITYG12MD007597 · NIMHD · HOWARD UNIVERSITY · PI SOUTHERLAND, WILLIAM M. · 2012 to 2018
$14.8M
NIGMS NIH HHS GM12MD007597NIMHD NIH HHS G12 MD007597
6 · The paper itself

Abstract

backgroundGastric Helicobacter pylori (H. pylori) infection and colorectal polyps are more prevalent in African Americans than in the general population. We aimed to investigate whether gastric H. pylori infection is associated with colorectal polyps in African Americans.

methodsMedical records of African Americans, 40 years and older (n = 1256) who underwent bidirectional gastrointestinal endoscopy on the same day were reviewed. H. pylori status was assessed by immunohistochemistry on gastric specimens. Colorectal polyps were confirmed by histological examination of colorectal biopsies. A subset of serum samples from healthy and polyp-bearing patients (n = 163) were analyzed by ELISA for anti-H. pylori and anti-CagA antibodies. The crude and adjusted effect of H. pylori on the risk of colorectal adenoma and polyp were computed by logistic regression models.

resultsThe prevalence of colorectal polyps and adenomas were 456 (36%) and 300 (24%) respectively. Colorectal polyps were more prevalent in gastric H. pylori infected than non-infected subjects [43% vs. 34%; Odds Ratio (OR) (95% CI): 1.5 (1.2-1.9), P = 0.001]. Patients with H. pylori-associated chronic active gastritis were at high risk to have adenomas [Unadjusted OR (95% CI): 1.3 (1.0-1.8); P = 0.04]. There was no difference in histopathology, size, or location of polyps with respect to H. pylori status. Gastric H. pylori infection, age, male gender and high risk clinical presentations were independent risk factors for colorectal polyps. Serological testing also revealed a higher prevalence of H. pylori and its toxin Cag-A in polyp patients vs. non polyp patients' sera, although in a non-statistically significant manner.

conclusionsThis study showed that current gastric H. pylori infection is associated with an increased risk of colorectal polyps in African Americans. Patients with H. pylori induced gastritis may benefit from early screening colonoscopy as a preventative measure for colorectal cancer.

Indexed as

AgedAged, 80 and overBiopsyBlack or African AmericanColonic PolypsColorectal NeoplasmsEndoscopy, GastrointestinalFemaleHelicobacter InfectionsHelicobacter pyloriHumansMaleMiddle AgedRisk Factors

Identifiers

PMID24774100
PMCPMC4022546
OpenAlexW2071454636

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.