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Trial · NCT01345175

Rifaximin and Placebo in the Treatment of Bowel Dysfunction After Anterior Resection for Rectal Cancer

NCT01345175, Phase 3, Completed, Memorial Sloan Kettering Cancer Center; results first posted 2024-05-14

3 sourcestrials-2026-11-12-0.5.0

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ConductScience Library. Rifaximin and Placebo in the Treatment of Bowel Dysfunction After Anterior Resection for Rectal Cancer. Trials, record NCT01345175. Release trials-2026-11-12-0.5.0, 12 Nov 2026. https://conductscience.org/library/trials/NCT01345175

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Trial

As registered on ClinicalTrials.gov, in the graph's capture of the registry.

Title
Rifaximin and Placebo in the Treatment of Bowel Dysfunction After Anterior Resection for Rectal Cancer
NCT number
NCT01345175
Status
Completed
Phases
Phase 3
Enrollment
69 participants, actual
Lead sponsor
Memorial Sloan Kettering Cancer Center
Conditions
Rectal Cancer
Interventions
Rifaximin, Placebo
First posted
2011-04-29
Last updated
2024-05-14
Results first posted
2024-05-14

Source ClinicalTrials.gov

Registered outcomes5

Each outcome the trial registered, primary first, in ClinicalTrials.gov's words.

ListOutcomeTime frameDescription
PrimaryNumber of Participants Who Completed MSKCC Bowel Function Instrument (BFI Score) in Patients Following Anterior Resection (AR) or Sphincter Preserving Surgery (SPS) for Rectal Cancer.1 year
SecondaryTo Determine if Reduction in Intestinal Bacterial Quantity Correlates With Improvement in Bowel Symptoms (BFI Score).1 year
SecondaryTo Explore the Bacterial Composition of Stool Before and After Antibiotic Treatment.1 year
SecondaryTo Identify Dynamic Changes in Bowel Function During and After Antibiotic Treatment Using a Bowel Function Log.1 year
SecondaryEfficacy of Metronidazole1 yearin the treatment of bowel dysfunction as measured by the MSKCC BFI in patients following AR or SPS for rectal cancer for patients who have no improvement following treatment with rifaximin or placebo.

Outcomes5

Each outcome the trial posted results for, in ClinicalTrials.gov's words.

TypeOutcomeTime framePopulationUnitsMeasured as
PRIMARYNumber of Participants Who Completed MSKCC Bowel Function Instrument (BFI Score) in Patients Following Anterior Resection (AR) or Sphincter Preserving Surgery (SPS) for Rectal Cancer.1 yearParticipantsCOUNT_OF_PARTICIPANTS
SECONDARYTo Determine if Reduction in Intestinal Bacterial Quantity Correlates With Improvement in Bowel Symptoms (BFI Score).1 yearN/A Data were not collected
SECONDARYTo Explore the Bacterial Composition of Stool Before and After Antibiotic Treatment.1 yearN/A Data were not collected
SECONDARYTo Identify Dynamic Changes in Bowel Function During and After Antibiotic Treatment Using a Bowel Function Log.1 yearN/A data were not completed
SECONDARYEfficacy of Metronidazole1 yearN/A Data were not collected

Results by group4

Each measurement the trial posted, group by group, in the words and numbers it posted.

OutcomeGroupCategoryValueSpreadUnits
Number of Participants Who Completed MSKCC Bowel Function Instrument (BFI Score) in Patients Following Anterior Resection (AR) or Sphincter Preserving Surgery (SPS) for Rectal Cancer.Pts Receiving RifaximinCompleted BFI30Participants
Number of Participants Who Completed MSKCC Bowel Function Instrument (BFI Score) in Patients Following Anterior Resection (AR) or Sphincter Preserving Surgery (SPS) for Rectal Cancer.Pts Receiving PlaceboCompleted BFI27Participants
Number of Participants Who Completed MSKCC Bowel Function Instrument (BFI Score) in Patients Following Anterior Resection (AR) or Sphincter Preserving Surgery (SPS) for Rectal Cancer.Pts Receiving RifaximinDid not complete BFI6Participants
Number of Participants Who Completed MSKCC Bowel Function Instrument (BFI Score) in Patients Following Anterior Resection (AR) or Sphincter Preserving Surgery (SPS) for Rectal Cancer.Pts Receiving PlaceboDid not complete BFI6Participants

Participant flow6

How many started, completed or left each group, period by period.

PeriodMilestoneGroupParticipantsUnits counted
Overall StudySTARTEDPts Receiving Rifaximin36
Overall StudySTARTEDPts Receiving Placebo33
Overall StudyCOMPLETEDPts Receiving Rifaximin30
Overall StudyCOMPLETEDPts Receiving Placebo27
Overall StudyNOT COMPLETEDPts Receiving Rifaximin6
Overall StudyNOT COMPLETEDPts Receiving Placebo6

Adverse events2

Each adverse event the trial posted, group by group: the participants affected out of those at risk.

TypeEventOrgan systemGroupAffectedAt riskEvents
seriousDiarrheaGastrointestinal disordersArm 1: Experimental: Pts Receiving Rifaximin036
seriousDiarrheaGastrointestinal disordersArm 2: Placebo Comparator: Pts Receiving Placebo133

Adverse event totals6

The totals the trial posted for each group.

TotalGroupAffectedAt risk
Total, all-cause mortalityArm 1: Experimental: Pts Receiving Rifaximin036
Total, all-cause mortalityArm 2: Placebo Comparator: Pts Receiving Placebo033
Total, other adverse eventsArm 1: Experimental: Pts Receiving Rifaximin036
Total, other adverse eventsArm 2: Placebo Comparator: Pts Receiving Placebo033
Total, serious adverse eventsArm 1: Experimental: Pts Receiving Rifaximin036
Total, serious adverse eventsArm 2: Placebo Comparator: Pts Receiving Placebo133

Papers0

The papers the trial lists on ClinicalTrials.gov.

None in this release.

Grants0

The grants NIH RePORTER links to the trial, newest funded first: NIH's, and some of AHRQ's, CDC's, FDA's and VA's. Each shows its title, principal investigators, organization and funder in its newest year.

None in this release.

Trial comparisons2

Comparisons of the trial's two groups, calculated by ConductScience from the counts it posted.

ComparisonSource
Arm 1: Experimental: Pts Receiving Rifaximin vs Arm 2: Placebo Comparator: Pts Receiving Placebo: deaths from any causeTrial comparisons
Arm 1: Experimental: Pts Receiving Rifaximin vs Arm 2: Placebo Comparator: Pts Receiving Placebo: serious adverse eventsTrial comparisons

Tests0

The ConductCognition tests this trial's registered outcomes name, as ScienceGraph matched them in trial-tests-2026-11-12-0.2.1.

None in this release.

Data dates

The day each source was copied for this release.

ClinicalTrials.gov
2026-11-12
ClinicalTrials.gov
Results, from AACT
2026-03-23
AACT
NIH grant links
2026-11-13
NIH RePORTER

Sources 3

  • ClinicalTrials.gov's posted results, through CTTI's AACTFreely available. Acknowledgement requested
  • ClinicalTrials.govNo license stated
  • NIH RePORTER's clinical studies and project filesPublic domain
Each source's terms
  • ClinicalTrials.gov's posted results, through CTTI's AACTClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299
  • ClinicalTrials.govnone stated
  • NIH RePORTER's clinical studies and project filesPublic domain (NIH RePORTER)

ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions.

For software

Read this trial from software.

The record and each of its lists are JSON, twenty rows a page. No key.

GET https://conductscience.org/api/trials/v1/NCT01345175

GET https://conductscience.org/api/trials/v1/NCT01345175/registered