Evidence map›Paper›PMID 37899462›Full record

ArticleScientific reports2023

No evident causal association between Helicobacter pylori infection and colorectal cancer: a bidirectional mendelian randomization study.

Fang Luo, Peipei Zhou, Xiong Ran, Ming Gu, Shaoquan Zhou

Open access · goldAbstract read
In one paragraph

Article in Scientific reports, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
5.1field-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

16 citing papers in PubMed, 16 citations in OpenAlex.

  1. Article
  2. Beyond the Stomach: Exploring the Role ofExpert reviews in molecular medicine · 2026
    Review
  3. Article
  4. Presence and copy number variations ofIranian journal of microbiology · 2026
    Article
  5. Association betweenFrontiers in oncology · 2026
    Article
  6. Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Systematic Review of Mendelian Randomization Studies onInterdisciplinary perspectives on infectious diseases · 2025
    Review
  12. Beyond the stomach: the association betweenFrontiers in cellular and infection microbiology · 2025
    Review
  13. The paradox ofAnnals of medicine and surgery (2012) · 2024
    Review
  14. Article
  15. Relationship betweenWorld journal of gastrointestinal surgery · 2024
    Article
  16. Effects and mechanisms ofFrontiers in immunology · 2024
    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

5 authors at 1 institution in 1 country.

Fang Luo *Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China.
Peipei Zhou *Department of Gastroenterology, Chongqing Hospital of Traditional Chinese Medicine, Chongqing, 400021, China.
Xiong RanDepartment of Radiology, Chongqing General Hospital, No.118, Xingguang Avenue, Liangjiang New District, Chongqing, 400014, China.
Ming GuDepartment of Radiology, Chongqing General Hospital, No.118, Xingguang Avenue, Liangjiang New District, Chongqing, 400014, China. gumin1979@ucas.ac.cn.
Shaoquan ZhouDepartment of Radiology, Chongqing General Hospital, No.118, Xingguang Avenue, Liangjiang New District, Chongqing, 400014, China. doczhousq@163.com.
First People's Hospital of Chongqing · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Observational studies have reported a correlation between Helicobacter pylori infection and colorectal cancer (CRC); however, the underlying cause has remained unclear. This research was aimed at determining whether there is a correlation between H. pylori infection and CRC by measuring the prevalence of H. pylori CagA antibodies and VacA antibodies. Using data from many genome-wide association studies (GWAS), we conducted a Mendelian randomization (MR) study with two sample GWAS. Then, we used bidirectional MR to evaluate the association between H. pylori infection and CRC for identifying causation. The most common method of analysis was the inverse variance-weighted technique. In addition, we performed supplementary analyses using the weighted median technique and MR-Egger regression. Horizontal pleiotropic outliers were identified and corrected using the MR Pleiotropy RESidual Sum and Outlier (MR-PRESSO) method. Genetically predicted anti-H. pylori IgG seropositivity was not causally associated with CRC [odds ratio (OR): 1.12; 95% confidence interval (CI): 0.98-1.27, P = 0.08] and neither were H. pylori VacA antibody levels (OR = 0.96, 95% CI: 0.90-1.02, P = 0.25) or H. pylori CagA antibody levels (OR = 1.00, 95% CI: 0.93-1.07, P = 0.92). Furthermore, reverse MR analysis did not reveal evidence for a causal effect of CRC on H. pylori infection. The weighted median, the MR-Egger method, and MR-PRESSO yielded identical results. Using genetic data, MR analysis showed there was no evidence for a causal association between seroprevalence of H. pylori infection and CRC. The relationship between H. pylori infection and CRC requires further research.

Indexed as

Colorectal NeoplasmsHelicobacter InfectionsHelicobacter pyloriAntibodies, BacterialCalgranulin AGenome-Wide Association StudyHumansMendelian Randomization AnalysisSeroepidemiologic StudiesAntibodies, BacterialCalgranulin A

Identifiers

PMID37899462
PMCPMC10613620
OpenAlexW4388033757

What Socratic 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 Socratic graph.