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Home/Conditions/Cancer & the Microbiome
Condition Guide

Cancer & the Microbiome

The microbiome as ally in the fight against cancer

The gut microbiome influences cancer risk, treatment response, and side effect profiles. From colorectal cancer to immunotherapy outcomes, microbiome science is reshaping oncology — and clinical trials are uncovering how to harness it.

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The Microbiome Connection

How Cancer & the Microbiome relates to gut health

Common Symptoms

  • Varies by cancer type
  • Immunotherapy side effects
  • Treatment-related gut disruption
  • Colorectal cancer risk factors

How the Microbiome is Involved

The microbiome affects cancer through multiple pathways: by modulating the immune system's tumor-fighting ability, by producing metabolites that can either protect or damage DNA, and by influencing whether immunotherapy drugs work. Patients with higher microbiome diversity tend to respond better to checkpoint inhibitors. FMT from responders to non-responders is being tested in trials.

Active Trials

View all 18764 trials
Safety and Early Signs of Efficacy of IL12-L19L19.Phase 1Recruiting
Advanced Solid TumorMetastatic Solid Tumor
The purpose of this study is to describe the safety, tolerability and early signs of efficacy of the antibody-cytokine f…
Hamburg, GermanyEst. completion Dec 2026
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Testing the Addition of Chemotherapy or Chemo-Immunotherapy to the Usual Surgery for Advanced Head and Neck CancerPhase 2Recruiting
Clinical Stage II HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8Clinical Stage III HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8Locally Recurrent Head and Neck Squamous Cell CarcinomaLocally Recurrent Hypopharyngeal Squamous Cell CarcinomaLocally Recurrent Laryngeal Squamous Cell CarcinomaLocally Recurrent Oral Cavity Squamous Cell CarcinomaLocally Recurrent Oropharyngeal Squamous Cell CarcinomaStage II Laryngeal Cancer AJCC v8Stage II Lip and Oral Cavity Cancer AJCC v8Stage II Oropharyngeal (p16-Negative) Carcinoma AJCC v8Stage III Laryngeal Cancer AJCC v8Stage III Lip and Oral Cavity Cancer AJCC v8Stage III Oropharyngeal (p16-Negative) Carcinoma AJCC v8Stage IVA Laryngeal Cancer AJCC v8Stage IVA Lip and Oral Cavity Cancer AJCC v8Stage IVA Oropharyngeal (p16-Negative) Carcinoma AJCC v8Stage IVB Laryngeal Cancer AJCC v8Stage IVB Oropharyngeal (p16-Negative) Carcinoma AJCC v8
This phase II trial tests the addition of chemotherapy, with carboplatin and paclitaxel, or chemo-immunotherapy, with ca…
Tucson, United StatesEst. completion Feb 1, 2033
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MYELOMATCH: A Screening Study to Assign People With Myeloid Cancer to a Treatment Study or Standard of Care Treatment Within myeloMATCH (MyeloMATCH Screening Trial)Phase 2Recruiting
Acute Myeloid LeukemiaAcute Myeloid Leukemia Arising From Previous Myelodysplastic/Myeloproliferative NeoplasmAcute Myeloid Leukemia Post Cytotoxic TherapyAcute Myeloid Leukemia, Myelodysplasia-RelatedMyelodysplastic Syndrome
This MyeloMATCH Master Screening and Reassessment Protocol (MSRP) evaluates the use of a screening tool and specific lab…
Birmingham, United StatesEst. completion May 15, 2029
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