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Reduced-Intensity Allografting as First Transplantation Approach in Relapsed/Refractory Grades One and Two Follicular Lymphoma Provides Improved Outcomes in Long-Term Survivors. Biol Blood Marrow Transplant 2015 Dec;21(12):2091-2099 PMID: 26253007 PMCID: PMC4639453

Pubmed ID

26253007

DOI

10.1016/j.bbmt.2015.07.028

Abstract

This study was conducted to compare long-term outcomes in patients with refractory/relapsed grades 1 and 2 follicular lymphoma (FL) after allogeneic (allo) versus autologous (auto) hematopoietic cell transplantation (HCT) in the rituximab era. Adult patients with relapsed/refractory grades 1 and 2 FL undergoing first reduced-intensity allo-HCT or first autograft during 2000 to 2012 were evaluated. A total of 518 rituximab-treated patients were included. Allo-HCT patients were younger and more heavily pretreated, and more patients had advanced stage and chemoresistant disease. The 5-year adjusted probabilities, comparing auto-HCT versus allo-HCT groups for nonrelapse mortality (NRM) were 5% versus 26% (P < .0001); relapse/progression: 54% versus 20% (P < .0001); progression-free survival (PFS): 41% versus 58% (P < .001), and overall survival (OS): 74% versus 66% (P = .05). Auto-HCT was associated with a higher risk of relapse/progression beyond 5 months after HCT (relative risk [RR], 4.4; P < .0001) and worse PFS (RR, 2.9; P < .0001) beyond 11 months after HCT. In the first 24 months after HCT, auto-HCT was associated with improved OS (RR, .41; P < .0001), but beyond 24 months, it was associated with inferior OS (RR, 2.2; P = .006). A landmark analysis of patients alive and progression-free at 2 years after HCT confirmed these observations, showing no difference in further NRM between both groups, but there was significantly higher risk of relapse/progression (RR, 7.3; P < .0001) and inferior PFS (RR, 3.2; P < .0001) and OS (RR, 2.1; P = .04) after auto-HCT. The 10-year cumulative incidences of second hematological malignancies after allo-HCT and auto-HCT were 0% and 7%, respectively. Auto-HCT and reduced-intensity-conditioned allo-HCT as first transplantation approach can provide durable disease control in grades 1 and 2 FL patients. Continued disease relapse risk after auto-HCT translates into improved PFS and OS after allo-HCT in long-term survivors.

Author List

Klyuchnikov E, Bacher U, Kröger NM, Hari PN, Ahn KW, Carreras J, Bachanova V, Bashey A, Cohen JB, D'Souza A, Freytes CO, Gale RP, Ganguly S, Hertzberg MS, Holmberg LA, Kharfan-Dabaja MA, Klein A, Ku GH, Laport GG, Lazarus HM, Miller AM, Mussetti A, Olsson RF, Slavin S, Usmani SZ, Vij R, Wood WA, Maloney DG, Sureda AM, Smith SM, Hamadani M

Authors

Kwang Woo Ahn PhD Associate Professor in the Institute for Health and Equity department at Medical College of Wisconsin
Anita D'Souza MD Assistant Professor in the Medicine department at Medical College of Wisconsin
Mehdi H. Hamadani MD Professor in the Medicine department at Medical College of Wisconsin
Parameswaran Hari MD Chief, Professor in the Medicine department at Medical College of Wisconsin




Scopus

2-s2.0-84947494295   25 Citations

MESH terms used to index this publication - Major topics in bold

Adult
Aged
Antineoplastic Agents
Disease Progression
Drug Resistance, Neoplasm
Female
Hematopoietic Stem Cell Transplantation
Humans
Longitudinal Studies
Lymphoma, Follicular
Male
Middle Aged
Myeloablative Agonists
Neoplasm Grading
Recurrence
Rituximab
Survival Analysis
Survivors
Transplantation Conditioning
Transplantation, Autologous
Transplantation, Homologous
Treatment Outcome
jenkins-FCD Prod-321 98992d628744e349846c2f62ac68f241d7e1ea70