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Pancreatic cancer

Compared within 1 study that had both: 24 people with pancreatic cancer and 18 healthy people. No microbes less common in people with pancreatic cancer, and 4 more common.

A difference is an association: it doesn’t mean these microbes cause, prevent or treat pancreatic cancer.

Phylum

Searching opens both lists and shows only matching rows.

Less common in pancreatic cancer · 0

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people

None compared.

More common in pancreatic cancer · 4

Strongest first, then the biggest gap · Each figure is 10 people Strongest first · Each figure is 10 people
  1. Dysosmobacter welbionis in 1 study Healthy 0% pancreatic cancer 42%
  2. Enterocloster bolteae in 1 study Healthy 0% pancreatic cancer 42%
  3. Bacteroides thetaiotaomicron in 1 study Healthy 5.6% pancreatic cancer 58%
  4. Parabacteroides merdae in 1 study Healthy 11% pancreatic cancer 67%

Where these numbers come from

Studies
Only GMrepo projects that had people with the condition and healthy people, 10 or more of each. Numbers come from those studies, never from pooling.Sampled in Japan.
How common
The share of people whose sample has any of it, in the people with the condition and in the healthy people of those same studies. Tested within studies (Cochran–Mantel–Haenszel, corrected for testing many microbes); a difference counts when it is clear and meaningful (Cohen’s h of 0.2 or more).
Strength word
Counted by code from how many studies point the same way: Seen again and again (3 or more, none clearly the other way), Seen more than once (2, the majority), Seen once (1, listed last). Where studies disagree, a row isn’t listed.
Each study
Tap a row for every study’s own numbers, and for how much carriers have.
Analysis
Our analysis of GMrepo data. GMrepo on Data sources · Read the rules

Also compared · 56 microbes

Compared within studies that had both, but not listed above.

No meaningful difference · 56
PubMed · human studies and reviews first

Recent research

All research on it
  1. Observational International journal of surgery · 2025
    Microbial variations in the multibody sites of the pancreatic ductal adenocarcinoma patients.
    PubMed ↗
  2. Observational Cancer letters · 2025
    Elevated levels of circulating microbial-associated uremic toxins are associated with metastatic duodenopancreatic neuroendocrine tumors in patients with Multiple Endocrine Neoplasia Type 1.
    PubMed ↗
  3. Randomized trial Nutrients · 2024
    Efficacy of 1-Kestose Supplementation in Patients with Pancreatic Ductal Adenocarcinoma: A Randomized Controlled Pilot Study.
    PubMed ↗
  4. Observational Cancer · 2023
    Analysis of the fecal metagenome in long-term survivors of pancreas cancer.
    PubMed ↗
  5. Review Nutrients · 2021
    Pancreatic Cancer and Gut Microbiome-Related Aspects: A Comprehensive Review and Dietary Recommendations.
    PubMed ↗

Source: PubMed, U.S. National Library of Medicine · 30 linked papers, last 10 years