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Clinical Trial Summary

RATIONALE: Probiotic therapy may reduce or prevent gastrointestinal complications in patients undergoing chemotherapy and pelvic radiation therapy.

PURPOSE: This randomized phase III trial is studying how well probiotic therapy works in preventing gastrointestinal complications in patients undergoing chemotherapy and pelvic radiation therapy.


Clinical Trial Description

OBJECTIVES:

Primary

- To determine whether live freeze-dried lactic acid bacteria probiotic (VSL#3®) is effective in reducing the acute treatment-related bowel function disturbances, as measured by the FACIT-D diarrhea subscale score in patients receiving concurrent chemotherapy and pelvic RT as adjuvant or primary treatment for malignancy.

Secondary

- To determine whether VSL#3® can reduce chronic treatment-related bowel dysfunction following completion of therapy.

- To examine whether VSL#3® appears to have an impact on disease-free survival.

- To bank blood products for future studies. (exploratory)

- To characterize changes in the fecal microbiota and examine for correlation with treatment assignment and symptom scores. (exploratory)

OUTLINE: This is a randomized, double-blind, placebo-controlled study. Patients are stratified according to site of primary tumor (rectum/anus vs other), history of anterior resection of the rectum (yes vs no), total planned cumulative dose (including boost of external-beam radiotherapy [RT] or brachytherapy) (4,500-5,350 cGy vs > 5,350 cGy), and use of intensity-modulated RT [IMRT] for pelvic RT (yes vs no). Patients are randomized to 1 of 2 treatment arms.

- Arm I: Patients receive live freeze-dried lactic acid bacteria probiotic (VSL#3®) orally (PO) 3 times a day during RT (5-8 weeks) and for 2 weeks after completion of RT.

- Arm II: Patients receive placebo PO 3 times a day during RT (5-8 weeks) and for 2 weeks after completion of RT.

Patients self-report symptoms using the FACIT-D, PBFQ, PRO-CTCAE, and Uniscale/fatigue weekly during RT, for 2 weeks after completion of RT, and at 12 months following the completion of RT.

Blood and stool samples may be collected from some patients for correlative studies. ;


Study Design

Allocation: Randomized, Intervention Model: Parallel Assignment, Masking: Double-Blind, Primary Purpose: Supportive Care


Related Conditions & MeSH terms


NCT number NCT01473290
Study type Interventional
Source Alliance for Clinical Trials in Oncology
Contact
Status Withdrawn
Phase Phase 3

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