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Study identifier: NCT04380740 Synced from ClinicalTrials.gov · July 29, 2026
● Recruiting

Extended vs Short-term Abatacept Dosing for Graft Versus Host Disease Prophylaxis

Condition: Graft Vs Host Disease  ·  Sponsor: Boston Children's Hospital

PhasePhase 2
Planned participants160
Who can joinAll sexes, 2 Years to no upper limit
Healthy volunteersNo

About this study

This is a multicenter randomized, double blind, Phase 2 trial for patients receiving transplants from 7 of 8 HLA matched donors, in which an extended dosing regimen of abatacept, and a short-term dosing regimen + placebo, when added to standard calcineurin inhibitor + methotrexate-based prophylaxis, will be compared for their ability to improve outcomes in patients with a minimum follow-up of one year post-transplant. All patients will receive 4 doses of abatacept (Days -1, +5, +14, +28). Prior to the fifth dose, patients will be randomly assigned to the 4-dose abatacept arm and receive 4 doses of placebo or 8-dose abatacept arm and receive 4 more doses of abatacept. The primary endpoint of the study will be severe AGVHD-free, severe CGVHD-free, relapse-free survival (SGRFS). The study will end when the last patient has reached 2 years after transplant. Results will first be calculated and the study unblinded when the last patient has reached one year post-transplant.

This description comes directly from the study's public registry record.

Talk to the study team

Brandi M Bratrude, BA  ·  6179192197  ·  brandi.bratrude@childrens.harvard.edu

Always discuss trial participation with your own doctor first.

Locations (15)

City Of Hope National Medical CenterDuarte, California, United StatesActive Not Recruiting
Moffitt Cancer CenterTampa, Florida, United StatesActive Not Recruiting
Emory University/Winship Cancer CenterAtlanta, Georgia, United StatesActive Not Recruiting
Children's Healthcare of AtlantaAtlanta, Georgia, United StatesRecruiting
University of ChicagoChicago, Illinois, United StatesRecruiting
Massachusetts General HospitalBoston, Massachusetts, United StatesActive Not Recruiting
Boston Children's HospitalBoston, Massachusetts, United StatesRecruiting
Beth Israel Deaconess Medical CenterBoston, Massachusetts, United StatesActive Not Recruiting
Dana-Farber Cancer InstituteBoston, Massachusetts, United StatesActive Not Recruiting
University of MichiganAnn Arbor, Michigan, United StatesActive Not Recruiting
Washington University St. LouisSt Louis, Missouri, United StatesWithdrawn
University of RochesterRochester, New York, United StatesRecruiting

+ 3 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT04380740