Clinical trial Recruiting at 6 sites Early Phase 1 Interventional Ages 70 to 85

Oral fecal microbiota transplant for healthier aging and reduced frailty

Official title: Effect of Fecal Microbiota Transplantation on Aging and the Underlying Mechanism of Gut Microbiome Restoration: a Randomized Clinical Trial

Run by Chinese Academy of Medical Sciences, Fuwai Hospital · NCT05598112 · Data updated 2026-11-12

This trial will try oral fecal microbiota transplant capsules in people aged 70–85 to test whether changing the gut microbiome improves frailty, cognitive and physical measures of aging.

More Aging trials

Quick facts

PhaseEarly Phase 1
Study typeInterventional
Ages70 Years to 85 Years
SexAll
Enrollment210 (estimated)
SponsorChinese Academy of Medical Sciences, Fuwai Hospital
Academic / other
Locations6 sites (Beijing, Beijing Municipality and 5 other locations)
StatusRecruiting
StartedApril 24, 2023
Main results expectedDecember 31, 2026
Study endsDecember 31, 2027
Registry record updatedDecember 31, 2025
Trial IDNCT05598112 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 70–85 who can give informed consent and do not have recent antibiotic/probiotic use, severe liver or kidney disease, recent major cardiac events, or major recent strokes.

Probably not a fit

People outside the 70–85 age range or those with serious hepatic/renal failure, recent antibiotics or probiotics use, recent major cardiac or cerebrovascular events, or current participation in other trials are unlikely to benefit or be eligible.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This is a multi-center, randomized, blinded, placebo-controlled early-phase pilot testing oral fecal microbiota transplant (FMT) capsules versus placebo in older adults. Participants aged 70–85 will receive FMT or placebo capsules and undergo repeated assessments of frailty, physical function, cognition, imaging (hippocampal volume), telomere length, inflammatory and cognitive biomarkers, and gut microbial composition and metabolites. Safety and tolerability will be monitored closely and data quality is overseen by independent statisticians and a third-party monitor. The trial is designed to explore both clinical effects and potential biological mechanisms linking the gut microbiome to aging-related measures.

Why it matters

Potential benefit: If successful, the intervention could improve frailty, physical and cognitive function, and biological markers of aging in older adults.

How similar studies have gone: Preclinical studies and some clinical work support microbiome approaches and oral FMT is established for infections, but using oral FMT specifically to target aging and frailty in humans is largely novel with limited direct human evidence.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

1. Age 70-85 years.
2. Patients with informed consent after thorough explanation.

Exclusion Criteria:

1. Participants of other clinical trials;
2. Antibiotics or probiotics usage within last 4 weeks;
3. Severe hepatic or renal diseases ((ALT \>3 times the upper limit of normal value, or end stage renal disease on dialysis or eGFR \<30 mL/min/1.73 m2, or serum creatinine \>2.5 mg/dl \[\>221 μmol/L\]);
4. History of large atherosclerotic cerebral infarction or hemorrhagic stroke (not including lacunar infarction and transient ischemic attack \[TIA\]);
5. Hospitalization for myocardial infarction within last 6 months; Coronary revascularization (PCI or CABG) within last 12 months; Planned for PCI or CABG in the next 6 months;
6. NYHA class III-IV heart failure; Hospitalization for chronic heart failure exacerbation within last 6 months;
7. Severe valvular diseases; Potential for surgery or percutaneous valve replacement within the study period;
8. Dilated cardiomyopathy; Hypertrophic cardiomyopathy; Rheumatic heart disease; Congenital heart disease;
9. History of dementia, Parkinson's disease, intracranial infection, intracranial tumor, schizophrenia, anxiety, depression;
10. History of neurosurgical operation;
11. History of gastrointestinal tumor, gastrointestinal surgery, inflammatory bowel disease; Hospitalization for peptic ulcer disease exacerbation within last 6 months or anticipated hospitalization for peptic ulcer disease the next 6 months;
12. Hypertension with uncontrolled blood pressure ≥180/110mmHg;
13. Diabetes Mellitus with uncontrolled fasting glucose level ≥200mg/dl (11.1mmol/L), or HbA1C\>8%;
14. Addicted to alcohol; Use of medication influencing cognitive function(i.e., antihistamine, antipsychotic);
15. General anesthesia within last 3 months;
16. Other severe diseases influencing the entry or survival of participants, such as malignant tumor or acquired immune deficiency syndrome, life expectancy \<1 year;
17. Impaired verbal communication who are incapable of providing their own informed consent, or incapable of self-care;
18. Special diet influencing microbiota (i.e. vegetarian);
19. Other conditions inappropriate for recruitment according to the investigators.

Where it's running

  • Beijing Chao-yang Hospital, Capital Medical University
    Beijing, Beijing Municipality, China
    Recruiting
  • Beijing Hospital
    Beijing, Beijing Municipality, China
    Recruiting
  • Chinese People's Liberation Army (PLA) General Hospital
    Beijing, Beijing Municipality, China
    Recruiting
  • Xuanwu Hospital, Capital Medical University
    Beijing, Beijing Municipality, China
    Recruiting
  • Huadong Hospital Affiliated to Fudan University
    Shanghai, Shanghai Municipality, China
    Recruiting
  • Zhejiang Hospital
    Hangzhou, Zhejiang, China
    Recruiting

Study contacts

  • Principal investigator: Jun Cai, MD,PhD — Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Chinese Institutes for Medical Research
  • Study coordinator: Luyun Fan, MD,PhD
  • Email: katevan@163.com
  • Phone: 01081992131

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

  • Longevity Metrics AI/ML Development Study

    Researchers are testing AI models that score health screening tests and predict outcomes like life expectancy for adults, using ongoing follow-up data.

    Recruiting Longevity Metrics, Inc. · Boulder, Colorado · NCT07808619

  • Acupoint Stimulation and Exercise for Pre-frail Older Adults in Taiwan

    This study tests whether combining exercise with daytime and sleep-improving acupoint stimulation helps pre-frail adults 50 and older in Taiwan feel less frail and sleep better.

    Recruiting Tainan Hospital, Ministry of Health and Welfare · Tainan · NCT07732530

  • Centenarian cohort in Navarre to study aging and longevity

    This study tests what factors help centenarians in Navarre stay healthier as they age and what might explain their exceptional longevity.

    Recruiting Fundacion Miguel Servet · Pamplona, Navarre · NCT07707297

  • Health Ahead: Comparing AI vs. Humans for Preventive Health Screening

    This study tests AI-assisted screening interpretation against human-only reads to see if automated screening can match or improve current practice for adults, especially in underserved areas.

    Recruiting Longevity Metrics, Inc. · Boulder, Colorado · NCT07669168

  • How environment and biology together predict health, aging, and death

    Researchers are following adults to see how living conditions and biology together relate to aging and life expectancy, by linking personal health data with environmental and social information over time.

    Recruiting Longevity Metrics, Inc. · Boulder, Colorado · NCT07646782

  • 100-Year Human Aging and Longevity Tracking Program

    This project will follow adults over their lifetimes to see if repeated health tests can predict lifespan, causes of death, serious disease, and loss of function.

    Recruiting Longevity Metrics, Inc. · Boulder, Colorado · NCT07563777

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.