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Engineering Gut Microbiome to Target Breast Cancer

Engineering Gut Microbiome to Target Breast Cancer

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03358511
Enrollment
7
Registered
2017-11-30
Start date
2017-10-11
Completion date
2020-05-19
Last updated
2020-05-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Breast Cancer

Brief summary

The purpose of this study is to find out if using probiotics will help the body's immune system react to breast cancer. New studies showed that diverse species of bacteria inside the bowel might help improve immune system, particularly the ability of immune system to recognize cancer. This study will investigate how probiotics will affect the subjects' immune system on breast cancer.

Interventions

DIETARY_SUPPLEMENTProbiotic

Primal Defense Ultra® Probiotic Formula is an over-the-counter probiotic that provides 15 billion colony forming units of 13 species of beneficial bacteria, including Saccharomyces boulardii, Lactobacillus plantarum, Bacillus subtilis, Bifidobacterium lactis, Bifidobacterium bifidum, Lactobacillus rhamnosus, Bifidobacterium breve, lactobacillus casei, Lactobacillus salivarius, Lactobacillus acidophilus, Lactobacillus brevis, Bifidobacterium longum, and Lactobacillus paracasei.

Sponsors

Mayo Clinic
Lead SponsorOTHER

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Post-menopausal females ≥ 18 years of age * Histologically confirmed adenocarcinoma of the breast ≥1.0 cm operable stage I-III * Must have adequate organ function, * Not receive systemic neoadjuvant therapy * Be willing to provide tissue, blood, and stool samples for research study. * Must not have taken any probiotics in the past 60 days prior to enrollment.

Exclusion criteria

* Patients with autoimmune disease, immune deficiency such as HIV, irritable bowel, known diverticulosis, and other serious GI conditions at treating physician's discretion will be excluded.

Design outcomes

Primary

MeasureTime frameDescription
Mean number of cytotoxic T lymphocytes (CD8+ cells)Approximately 4 weeks after baselineCD8+ T cells (often called cytotoxic T lymphocytes) are very important for immune defence against intracellular pathogens, including viruses and bacteria, and for tumor surveillance.

Countries

United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026