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Ladetto M, Tavarozzi R, Zanni M, Evangelista A, Ferrero S, Tucci A, Botto B, Bolis S, Volpetti S, Zilioli VR, Puccini B, Arcari A, Pavone V, Gaidano G, Corradini P, Tani M, Cavallo F, Milone G, Ghiggi C, Pinto A, Pastore D, Ferreri AJM, Latte G, Patti C, Re F, Benedetti F, Luminari S, Pennese E, Bossi E, Boccomini C, Anastasia A, Bottelli C, Ciccone G, Vitolo U. Radioimmunotherapy versus autologous hematopoietic stem cell transplantation in relapsed/refractory follicular lymphoma: a Fondazione Italiana Linfomi multicenter, randomized, phase III trial. Ann Oncol 2024; 35:118-129. [PMID: 37922989 DOI: 10.1016/j.annonc.2023.10.095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 09/11/2023] [Accepted: 10/03/2023] [Indexed: 11/07/2023] Open
Abstract
BACKGROUND Optimal consolidation for young patilents with relapsed/refractory (R/R) follicular lymphoma (FL) remains uncertain in the rituximab era, with an unclear benefit of autologous stem cell transplantation (ASCT). The multicenter, randomized, phase III FLAZ12 (NCT01827605) trial compared anti-CD20 radioimmunotherapy (RIT) with ASCT as consolidation after chemoimmunotherapy, both followed by rituximab maintenance. PATIENTS AND METHODS Patients (age 18-65 years) with R/R FL and without significant comorbidities were enrolled and treated with three courses of conventional, investigator-chosen chemoimmunotherapies. Those experiencing at least a partial response were randomized 1 : 1 to ASCT or RIT before CD34+ collection, and all received postconsolidation rituximab maintenance. Progression-free survival (PFS) was the primary endpoint. The target sample size was 210 (105/group). RESULTS Between August 2012 and September 2019, of 164 screened patients, 159 were enrolled [median age 57 (interquartile range 49-62) years, 55% male, 57% stage IV, 20% bulky disease]. The study was closed prematurely because of low accrual. Data were analyzed on 8 June 2023, on an intention-to-treat basis, with a 77-month median follow-up from enrollment. Of the 141 patients (89%), 70 were randomized to ASCT and 71 to RIT. The estimated 3-year PFS in both groups was 62% (hazard ratio 1.11, 95% confidence interval 0.69-1.80, P = 0.6662). The 3-year overall survival also was similar between the two groups. Rates of grade ≥3 hematological toxicity were 94% with ASCT versus 46% with RIT (P < 0.001), and grade ≥3 neutropenia occurred in 94% versus 41%, respectively (P < 0.001). Second cancers occurred in nine patients after ASCT and three after radioimmunotherapy (P = 0.189). CONCLUSIONS Even if prematurely discontinued, our study did not demonstrate the superiority of ASCT versus RIT. ASCT was more toxic and demanding for patients and health services. Both strategies yielded similar, favorable long-term outcomes, suggesting that consolidation programs milder than ASCT require further investigation in R/R FL.
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Affiliation(s)
- M Ladetto
- Department of Translational Medicine, University of Eastern Piedmont, Novara; SCDU di Ematologia, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria.
| | - R Tavarozzi
- Department of Translational Medicine, University of Eastern Piedmont, Novara; SCDU di Ematologia, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria
| | - M Zanni
- SCDU di Ematologia, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria
| | - A Evangelista
- SSD of Clinical Epidemiology, Universitaria Città della Salute e della Scienza di Torino and Centre for Cancer Prevention Piemonte, Torino
| | - S Ferrero
- Department of Molecular Biotechnologies and Health Sciences, Universitaria Città della Salute e della Scienza di Torino and Centre for Cancer Prevention Piemonte, Torino
| | - A Tucci
- Department of Hematology, Spedali Civili, Brescia
| | - B Botto
- Struttura Complessa Ematologia, AOU Città della salute e della scienza di Torino, Turin
| | - S Bolis
- SC Ematologia ASST-Monza, Monza
| | - S Volpetti
- Division of Hematology, Clinica Ematologica, Centro Trapianti e Terapie Cellulari Carlo Melzi, DISM, Azienda Ospedaliero Universitaria S. M. Misericordia, Udine
| | - V R Zilioli
- Division of Haematology, ASST Grande Ospedale Metropolitano Niguarda, Milano
| | - B Puccini
- Department of Haematology, University of Florence, Firenze
| | - A Arcari
- Hematology Unit, Ospedale Guglielmo da Saliceto, Piacenza
| | - V Pavone
- A. O. C. Panico-U.O.C Ematologia e Trapianto, Tricase, Lecce
| | - G Gaidano
- SCDU di Ematologia, Azienda Ospedaliera SS Antonio e Biagio e Cesare Arrigo, Alessandria; Division of Hematology, Azienda Ospedaliero-Universitaria Maggiore della Carità, Novara
| | - P Corradini
- Division of Hematology, Fondazione IRCCS Istituto Nazionale dei Tumori, University of Milan, Milano
| | - M Tani
- Hematology Unit, Department of Oncology and Hematology, "Santa Maria delle Croci" Hospital, Ravenna
| | - F Cavallo
- Department of Molecular Biotechnologies and Health Sciences, Universitaria Città della Salute e della Scienza di Torino and Centre for Cancer Prevention Piemonte, Torino
| | - G Milone
- Division of Hematology and Program for Hematopoietic Transplantation, Azienda Ospedaliera Policlinico Vittorio Emanuele, Catania
| | - C Ghiggi
- Hematology Division, IRCCS Azienda Ospedaliera Universitaria San Martino, IST Istituto Nazionale per la Ricerca sul Cancro, Genova
| | - A Pinto
- Department of Hematology, Istituto Nazionale Tumori Istituto di Ricovero e Cura a Carattere Scientifico "Fondazione G Pascale", Naples
| | | | - A J M Ferreri
- Onco-Hematology Department, Fondazione Centro San Raffaele, Milano
| | - G Latte
- Unità di Ematologia e Trapianto di Midollo Osseo, San Francesco Hospital, Nuoro
| | - C Patti
- Divisione di Oncoematologia, Azienda Villa Sofia - Cervello, Palermo
| | - F Re
- Department of Hematology, A.O.U. di Parma, Parma
| | - F Benedetti
- Department of Medicine, Section of Hematology and Bone Marrow Transplant Unit, University of Verona, Verona
| | - S Luminari
- Department of Hematology, IRCCS Reggio Emilia, Reggio Emilia
| | - E Pennese
- Lymphoma Unit, Department of Hematology, Ospedale Spirito Santo, Pescara
| | - E Bossi
- SC Ematologia ASST-Monza, Monza
| | - C Boccomini
- Struttura Complessa Ematologia, AOU Città della salute e della scienza di Torino, Turin
| | - A Anastasia
- Department of Hematology, Spedali Civili, Brescia
| | - C Bottelli
- Department of Hematology, Spedali Civili, Brescia
| | - G Ciccone
- SSD of Clinical Epidemiology, Universitaria Città della Salute e della Scienza di Torino and Centre for Cancer Prevention Piemonte, Torino
| | - U Vitolo
- Candiolo Cancer Institute, FPO-IRCCS, Candiolo, Italy
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