NCT01691248

Safety and Efficacy of Fidaxomicin Versus Placebo for Prophylaxis Against Clostridium Difficile-Associated Diarrhea in Adults Undergoing Hematopoietic Stem Cell Transplantation (MK-5119-001)

DEFLECT-1: A Phase 3b Multi-Center, Double-Blind, Randomized, Placebo Controlled Study to Demonstrate the Safety and Efficacy of Fidaxomicin for Prophylaxis Against Clostridium Difficile-Associated Diarrhea in Adults Undergoing Hematopoietic Stem Cell Transplantation

• Status: Completed
• Phase: Phase 3
• Study type: Interventional
• Enrollment: 611 (actual)
• Sponsor: Optimer Pharmaceuticals LLC, a subsidiary of Merck & Co., Inc. (Rahway, New Jersey USA) · Industry
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The objective of this study is to demonstrate the efficacy and safety of Fidaxomicin versus placebo for prophylaxis against Clostridium difficile-Associated Diarrhea (CDAD) in adult participants undergoing hematopoietic stem cell transplantation (HSCT). The primary hypothesis is that Fidaxomicin is superior to placebo in preventing CDAD in participants undergoing HSCT.

Conditions

• Clostridium Difficile-Associated Diarrhea (CDAD)

Interventions

Type	Name	Description
DRUG	fidaxomicin	Fidaxomicin 200 mg tablet once daily from the start (+/- 2 days) of condition (prior to transplantation) or at the time of Fluoroquinolone initiation. Study drug treatment will continue until 7 days after either neutrophil engraftment or the completion of any Fluoroquinolone antibiotic regimen (whichever occurs later). Study drug treatment will stop at onset of CDAD or no longer than 40 days of duration, even if other antibiotics are still administered or neutrophil engraftment extends beyond 40 days.
DRUG	Placebo	Placebo tablet once daily from the start (+/- 2 days) of condition (prior to transplantation) or at the time of Fluoroquinolone initiation. Treatment will continue until 7 days after either neutrophil engraftment or the completion of any Fluoroquinolone antibiotic regimen (whichever occurs later). Treatment will stop at onset of CDAD or no longer than 40 days of duration, even if other antibiotics are still administered or neutrophil engraftment extends beyond 40 days.

Timeline

• Start date: 2012-10-10
• Primary completion: 2015-03-18
• Completion: 2015-04-16
• First posted: 2012-09-24
• Last updated: 2018-09-18
• Results posted: 2016-04-12