Similar outcome of allogeneic stem cell transplantation after myeloablative and sequential conditioning regimen in patients with refractory or relapsed acute myeloid leukemia: A study from the Société Francophone de Greffe de Moelle et de Thérapie Cellula

Date publication

mars 2018

Journal

American journal of hematology

Auteurs

Membres identifiés du Cancéropôle Est :
Pr DECONINCK Eric

Tous les auteurs :
Decroocq J, Itzykson R, Vigouroux S, Michallet M, Yakoub-Agha I, Huynh A, Beckerich F, Suarez F, Chevallier P, Nguyen-Quoc S, Ledoux MP, Clement L, Hicheri Y, Guillerm G, Cornillon J, Contentin N, Carre M, Maillard N, Mercier M, Mohty M, Beguin Y, Bourhis JH, Charbonnier A, Dauriac C, Bay JO, Blaise D, Deconinck E, Jubert C, Raus N, Peffault de Latour R, Dhedin N

Lien Pubmed

https://www.ncbi.nlm.nih.gov/pubmed/29226497

Résumé

Patients with acute myeloid leukemia (AML) in relapse or refractory to induction therapy have a dismal prognosis. Allogeneic hematopoietic stem cell transplantation is the only curative option. In these patients, we aimed to compare the results of a myeloablative transplant versus a sequential approach consisting in a cytoreductive chemotherapy followed by a reduced intensity conditioning regimen and prophylactic donor lymphocytes infusions. We retrospectively analyzed 99 patients aged 18-50 years, transplanted for a refractory (52%) or a relapsed AML not in remission (48%). Fifty-eight patients received a sequential approach and 41 patients a myeloablative conditioning regimen. Only 6 patients received prophylactic donor lymphocytes infusions. With a median follow-up of 48 months, 2-year overall survival was 39%, 95% confidence interval (CI) (24-53) in the myeloablative group versus 33%, 95% CI (21-45) in the sequential groups (P = .39), and 2-year cumulative incidence of relapse (CIR) was 57% versus 50% respectively (P = .99). Nonrelapse mortality was not higher in the myeloablative group (17% versus 15%, P = .44). In multivariate analysis, overall survival, CIR and nonrelapse mortality remained similar between the two groups. However, in multivariate analysis, sequential conditioning led to fewer acute grade II-IV graft versus host disease (GVHD) (HR for sequential approach = 0.37; 95% CI: 0.21-0.65; P < .001) without a significant impact on chronic GVHD (all grades and extensive). In young patients with refractory or relapsed AML, myeloablative transplant and sequential approach offer similar outcomes except for a lower incidence of acute GvHD after a sequential transplant.

Référence

Am. J. Hematol.. 2018 Mar;93(3):416-423