Allogeneic stem cell transplantation for peripheral T cell lymphomas: a retrospective study in 285 patients from the Société Francophone de Greffe de Moelle et de Thérapie Cellulaire (SFGM-TC)
Allogeneic stem cell transplantation; Peripheral T cell lymphoma; Retrospective analysis
Abstract :
[en] Background: Peripheral T cell lymphomas form a heterogeneous group with a usually dismal prognostic. The place of allogeneic stem cell transplantation to treat PTCL is debated.
Methods: We retrospectively analyzed the overall survival (OS), event-free survival (EFS), relapse, and transplantrelated mortality (TRM) and associated variables in 285 adults with non-primary cutaneous PTCL (PCTL-NOS (39%), angioimmunoblastic T cell lymphomas (29%), anaplastic T cell lymphomas (15%), and other subtypes (17%)), who received alloSCT in 34 centers between 2006 and 2014.
Results: AlloSCT was given as part of front-line therapy (n = 138) to 93 patients in first complete response (CR) and 45 in first partial response (PR), and of salvage therapy (n = 147) to 116 patients for second or more CR/PR and 31 for progressive disease. Reduced-intensity conditioning (RIC) was given to 172 patients (62%), while 107 (38%) received myeloablative conditioning (MAC). The median follow-up was 72.4 months. The 2- and 4-year OS were 65% and 59%, respectively, and the cumulative incidence of relapse was 18% after 1 year and 19% after 2 years.
TRM was 21% at 1 year, 24% after 2 years, and 28% after 4 years. In multivariate analysis, grade III–IV acute GvHD (HR = 2.57, 95% CI 1.53–4.31; p = 0.00036), low Karnofsky score < 80% (HR = 5.14, 95% CI 2.02–13.06; p = 0.00058), and progressive disease status before transplant (HR = 2.21, 95% CI 1.25–3.89; p = 0.0062) were significantly associated with a reduced OS.
Conclusions: The data demonstrate in the largest retrospective cohort of non-cutaneous PTCL so far reported that alloSCT after RIC or MAC is an effective strategy, even in chemoresistant patients.
Disciplines :
Hematology
Author, co-author :
Mamez, Anne-Claire
Dupont, Axelle
Blaise, Didier
Chavallier, Patrice
Forcade, Edouard
Ceballos, Patrice
Mohty, Mohamad
Suarez, Felipe
BEGUIN, Yves ; Centre Hospitalier Universitaire de Liège - CHU > Département de médecine interne > Service d'hématologie clinique
Allogeneic stem cell transplantation for peripheral T cell lymphomas: a retrospective study in 285 patients from the Société Francophone de Greffe de Moelle et de Thérapie Cellulaire (SFGM-TC)
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