RIC With Thiotepa Combined With Bu/Flu/Ara-C in Allo-HSCT for Relapsed or Refractory PTCL.

Summary

This study is a single-center, single-arm, prospective phase II clinical trial that evaluates the efficacy and safety of an reduced-intensity conditioning (RIC) regimen with thiotepa combined with busulfan, fludarabine, and cytarabine for allogeneic hematopoietic stem cell transplantation in the treatment of relapse and refratory peripheral T-cells lymphoma. The conditioning regimen includes thiotepa at a dose of 5mg/kg/d at d -7 (1 day), fludarabine at 30mg/m2/d from d -6 to d -2 (5 days), cytarabine at 1g/m2/d from d -6 to d -2 (5 days), and busulfan at 3.2mg/kg/d from d -4 to d -3 (2 days). Conditioning begins on day -7, and donor hematopoietic stem cell infusion is performed on day 0. All patients will undergo bone marrow examination on day 14 and day 28 post-transplant, followed by bone marrow examinations every 30 days within the first year after transplantation, and every 60 days within the second year after transplantation. FDG-PET/CT imaging will be adopted every 6 months after transplantation. If disease relapse is suspected during the follow-up period, bone marrow and relapse site examinations will be conducted at any time. The primary study endpoints are the 1-year and 2-year progression-free survival (PFS) rates post-transplant. Secondary study endpoints include the incidence of acute graft-versus-host disease (GVHD) within 180 days post-transplant, cumulative relapse rates at 1 year and 2 years post-transplant, 1-year and 2-year overall survival (OS), graft-versus-host disease-free, relapse-free survival (GRFS), non-relapse mortality (NRM), cumulative incidence of chronic GVHD, and the incidence of Cytomegalovirus （CMV）and Epstein-Barr virus（EBV）reactivation within 1 year.

Timeline

Start

2024-07-15

Primary completion

2026-07-15

Completion

2026-07-15

Publications

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• Background Loirat M, Chevallier P, Leux C, Moreau A, Bossard C, Guillaume T, Gastinne T, Delaunay J, Blin N, Mahe B, Dubruille V, Augeul-Meunier K, Peterlin P, Maisonneuve H, Moreau P, Juge-Morineau N, Jardel H, Mohty M, Moreau P, Le Gouill S. Upfront allogeneic stem-cell transplantation for patients with nonlocalized untreated peripheral T-cell lymphoma: an intention-to-treat analysis from a single center. Ann Oncol. 2015 Feb;26(2):386-92. doi: 10.1093/annonc/mdu515. Epub 2014 Nov 12.
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