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Clinical trialNCT01461070CompletedObservational

Intestine Bacteria and Breast Cancer Risk

SponsorNational Cancer Institute (NCI)Enrollment175Breast Neoplasms
View the registry record on ClinicalTrials.gov

Summary

The lay summary the sponsor registered on ClinicalTrials.gov.

Background: \- Some bacteria found in the large and small intestines help keep people healthy and aid digestion. They may also affect a person s risk of developing cancer. Researchers want to study the relationship between intestinal bacteria and breast cancer risk factors. They can do this by looking at stool and urine samples from postmenopausal women. Objectives: \- To study intestinal bacteria and its relationship to urine-based markers of breast cancer risk in women. Eligibility: \- Women between 55 and 69 years of age with a recent mammogram that showed no signs of cancer. Design: * Participants will be screened with a medical history and basic health questionnaire. * At home, participants will complete questionnaires about cancer risk factors and food consumption. * Participants will also collect urine and stool samples. They will send the samples to the designated labs for study. * No treatment will be provided as part of this protocol.

Investigators

The overall officials registered on this study. Names that resolve to a FindMyKOL profile link to it; the rest are shown as registered.

A profile link is shown only when the registered name resolves to a person record with a confident, namesake-checked match; ambiguous names stay unlinked.

Sites

1 registered facility, with the per-site recruitment status where the registry publishes one. ClinicalTrials.gov does not publish per-site enrollment counts.

United States
  • Kaiser Permanente Colorado

    Denver, Colorado, United States

Site investigator names are published by ClinicalTrials.gov only while a study recruits, so completed studies list sites without them.

Drugs studied

No drug or biological interventions are in our data for this study. It may test a procedure, device or behavioral intervention, or the intervention list isn't in our current snapshot. See the registry record ↗. Why? →

Registration & key dates

Registry attributes as recorded on the ClinicalTrials.gov study record.

Start
10 Aug 2011
Primary completion
30 Jun 2014
Completion
22 May 2020
Last update posted
27 May 2020
Registered enrollment
175
Registry id
NCT01461070

Source: ClinicalTrials.gov, via the CTTI AACT database, data as of 4 Nov 2026. Registry facts are shown as registered by the study sponsor; FindMyKOL does not interpret them.