R-CHOP Versus R-FC Followed by Maintenance with Rituximab Versus Interferon-Alfa: Outcome of the First Randomized Trial for Elderly Patients with Mantle Cell Lymphoma

Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 439-439 ◽  
Author(s):  
J.C. Kluin-Nelemans ◽  
E. Hoster ◽  
J. Walewski ◽  
S. Stilgenbauer ◽  
C. H. Geisler ◽  
...  

Abstract Abstract 439 Introduction. The prognosis of elderly patients with mantle cell lymphoma (MCL) is poor. Despite R-CHOP, only low rates of complete remissions (CR) are obtained and almost all patients relapse. Median overall survival (OS) used to be far below 5 years. Within the European MCL Network we performed a randomized intergroup trial to investigate both whether a fludarabine-containing induction regimen could improve the CR-rate, and whether maintenance with rituximab could prolong remission duration. Methods. Patients with stage II-IV MCL >60 yrs not eligible for high-dose therapy were randomized between either 8 × R-CHOP-21 (day 1: rituximab 375 mg/m2, cyclophosphamide 750 mg/m2, doxorubicin 50 mg/m2, vincristine 1.4 mg/m2, max 2 mg and day 1–5 prednisone 100 mg) or 6 × R-FC-28 (rituximab 375 mg/m2 day 1, fludarabine 30 mg/m2 + cyclophosphamide 250 mg/m2, both iv day 1–3). Responding (CR, CRu, PR) patients underwent a second randomization between maintenance with rituximab one dose every 2 months or interferon-alfa (IFN; regular IFN weekly 3×3 MIU or pegylated IFN 1×1 μg/kg), both given until progression. First randomisation for induction therapy - R-CHOP vs R-FC: Between Jan 2004 and Oct 2010, 560 patients were entered; 457 were evaluable for response to induction. Median age was 70 yrs, 70% male, 83% stage IV, 41% intermediate and 50% high-risk MIPI. Whereas CR rates after R-FC and R-CHOP were similar (38 vs 34% CR, 52 vs 50% CR/CRu, respectively), the overall response rate was lower after R-FC (78% vs 87%; p=0.0508). Progressive disease was more frequent during R-FC (15% vs 5%). Of note, median OS was significantly inferior after R-FC (40 vs 64 months; p=0.0072). More patients died after initial progression (14% vs 4%) or in first remission (11% vs 3%) in the R-FC arm compared to R-CHOP. Hematologic grade 3–4 toxicities were more frequent during R-FC, especially thrombocytopenia (40% vs 17%). Non-hematologic grade 3–4 toxicity was rare (below 7% each), except neutropenic fever (12% R-FC; 18% R-CHOP) and infections (16% R-FC; 14% R-CHOP). Second randomisation for maintenance therapy - Interferon-alpha vs Rituximab: From the responding patients, 310 underwent the second randomization. Sixty-one percent of patients had a CR/CRu upon induction therapy. Fifty-eight percent had received R-CHOP induction. Rituximab maintenance almost doubled the remission duration compared with IFN (at 4-yrs 57% vs 26% in remission; HR 0.54, 0.35–0.87; p=0.0109). Overall survival did not differ between both maintenance arms (p=0.17). However, the subcohort of R-CHOP-treated patients showed a significant advantage after rituximab maintenance (4-yr OS 87% vs 57% after IFN; p=0.0061). Hematologic grade 3–4 toxicity was higher in the IFN arm (leukocytopenia 33% vs 16%; thrombocytopenia 15% vs 6%); non-hematologic grade 3–4 toxicity was rare, except for infections (8% IFN; 7% rituximab). R-FC followed by rituximab resulted in the highest infection rate (CTC grades 1–4: 50%), whereas all other combinations (R-CHOP followed by rituximab or IFN, and R-FC followed by IFN) ranged between 25–35%. Patients in CR/CRu or PR after induction who did not receive any maintenance for various reasons, mainly based upon patient's decisions or ongoing cytopenia after induction (n = 104), had a poor outcome (median remission duration 18 months). Conclusions. Induction therapy with R-FC is discouraged for elderly patients with MCL, whereas R-CHOP induction followed by rituximab maintenance should be considered the new standard for elderly MCL patients, to which new regimens need to be compared. Disclosures: Off Label Use: rituximab maintenance for mantle cell lymphoma. Geisler:Roche: Consultancy, Research Funding; Celgene: Consultancy; GSK: Consultancy. Tilly:Roche: Honoraria, Membership on an entity's Board of Directors or advisory committees. Hiddemann:Roche Pharma: Honoraria, Research Funding. Dreyling:Roche: Research Funding, Scientific advisory board, Speakers Bureau.

Blood ◽  
2012 ◽  
Vol 120 (21) ◽  
pp. 153-153 ◽  
Author(s):  
Brad S. Kahl ◽  
Hailun Li ◽  
Mitchell R Smith ◽  
Randy D. Gascoyne ◽  
David T. Yang ◽  
...  

Abstract Abstract 153 Introduction Modified R-hyperCVAD is a well-tolerated induction regimen with a high response rate in MCL. We hypothesized that the incorporation of bortezomib (Velcadea) into this regimen would enhance the complete response rates. We further hypothesized that the addition of maintenance rituximab (MR) would improve remission duration. The new regimen, VcR-CVAD with MR, was tested for safety and efficacy in the Eastern Cooperative Oncology Group. Methods Eligible patients had histologically confirmed, previously untreated MCL, PS 0–2, and adequate end organ function. The treatment plan included: bortezomib 1.3 mg/m2 days 1 and 4, rituximab 375 mg/m2 IV day 1, cyclophosphamide 300 mg/m2 IV over 3 hrs q 12 hrs × 6 doses days 1–3, doxorubicin 50 mg/m2 continuous infusion over 48 hrs days 1–2, vincristine 1 mg IV day 3, dexamethasone 40 mg po days 1–4. Cycles were repeated every 21 days for 6 cycles and all patients received G-CSF support. Patients achieving SD, PR, or CR received MR administered as 4 weekly treatments every 6 months for 2 years (protocol therapy). Patients could elect to receive high dose chemotherapy and autologous stem cell transplantation (SCT) off protocol rather than MR. The primary endpoint of the trial was the CR rate, defined as PET-negative, marrow-negative, to VcR-CVAD induction therapy. Results Seventy-five eligible patients were enrolled between 5/07 and 10/08. Baseline characteristics include median age 62 (40–76), 58M:17F, 92% stage III/IV, and 40% with elevated LDH. MIPI risk distribution included 37% low, 36% intermediate, 19% high, 8% unknown. Sixty-eight patients (91%) completed VcR-CVAD induction therapy. Reasons for treatment discontinuation included PD (1), toxicity (4), and patient preference (2). The ORR was 97% (73/75), CR rate 68% (51/75) and PR rate 29% (22/75). Of the 22 PR patients, 11 were so coded due to no bone marrow evaluation and/or PET imaging post therapy. The CR rate in the 64 completely restaged patients was 80%. Forty-four patients proceeded to protocol planned MR while 22 patients received SCT consolidation off protocol. With a median follow up of 3.6 years, the 3-yr PFS for the MR cohort (n = 44) and entire cohort (n = 75) are 73% and 74%, respectively. OS at 3-yrs is 88%, with no difference between MR and SCT patients. The major toxicity of the induction treatment regimen was expected myelosuppression. Grade 3–4 non-hematologic toxicities were rare. No patients developed grade 3–4 neuropathy. There were no serious toxicities during MR. There were no treatment related deaths. Conclusion The VcR-CVAD induction produced high overall OR (97%) and CR rates (68%) in a representative MCL patient population treated in a cooperative group setting. The 3-yr PFS (74%) and OS (88%) are highly encouraging. Remissions in patients receiving MR were as durable as patients receiving SCT consolidation. The value of bortezomib, when added to conventional chemotherapy, is currently being tested in a randomized intergroup trial (E1411). Disclosures: Kahl: Genentech: Consultancy, Research Funding; Roche: Consultancy; Millennium: Consultancy, Research Funding. Off Label Use: Bortezomib as frontline treatment of mantle cell lymphoma. Smith:Millennium: Research Funding. Advani:Genentech: Research Funding. Horning:Genentech: Employment; Roche: Equity Ownership.


Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 2710-2710 ◽  
Author(s):  
Antonio Branca ◽  
Ilaria Gianesello ◽  
Luca Brugnaro ◽  
Tamara Berno ◽  
Silvia Imbergamo ◽  
...  

Abstract Background and objectives. Bendamustine in combination with rituximab has demonstrated a relevant clinical activity and a good toxicity profile in patients with mantle cell lymphoma (MCL). Cytosine arabinoside (Ara-C) is a key drug in induction chemotherapy regimens of young patients with MCL. In vitro studies have shown that bendamustine increases the cytotoxic effect of Ara‐C in leukemic blasts and lymphoma cells, and the two drugs display high synergistic activity when used in consecutive combinations. Clinically, it has recently been demonstrated that rituximab + bendamustine + Ara‐C (R-BAC) combination has a remarkable activity and is well tolerated both in untreated and in relapsed/refractory patients with MCL (Visco C et al. J Clin Oncol 2013 31:1442-1449). In the present study, we report data from an Italian single-center experience evaluating the efficacy and tolerability of R-BAC association in previously untreated MCL patients both eligible and ineligible for transplantation. Design and methods. From January 2009 to November 2014, 25 newly diagnosed patients with MCL (median 67 years; range 57-83 years) were treated with immunochemotherapy according to R-BAC schedule (Rituximab 375 mg/mq day 1; Bendamustine 70 mg/mq days 2, 3; Ara-C 500 mg/mq days 2-4) x 4 or 6 28-day cycles. All patients received G-CSF prophylaxis. Ninety-six percent of patients had stage III/IV disease; MIPI score was high in 24%, intermediate in 60% and low in 12%; in one patient it was not evaluable. Results. Twenty-two patients (88%) completed the scheduled treatment (4 or 6 cycles). The ORR was 88%: CR 84% (21 patients); PR 4% (1 patient); 1 patient was in SD, but he received only 1 cycle due to toxicity and died still in SD about three years later. Seven patients (28%) underwent autologous stem cell transplantation (ASCT); seven patients (28%) received rituximab maintenance for two years. Two patients (8%) experienced disease progression during first line therapy, both had intermediate MIPI score. After a median follow up of 33 months (range 4-65 months), the OS was 80% (one patient died for unrelated causes) and the PFS was 80%. At this time point, 19 (76%) and 1 (4%) patient were in CR and in PD, respectively. The latter patient is currently undergoing salvage chemotherapy. Patients who received either maintenance immunotherapy with rituximab or consolidation with ASCT after R-BAC (overall 56%) seemed to experience longer PFS and OS. In the ASCT group the OS was 100% at a median follow up of 23 months; in the rituximab maintenance group the OS was 71% at a median follow up of 41 months. In the group of patients that received R-BAC induction therapy only, the OS was 61% at a median follow up of 26 months (p=0.14, likely due to the low number). The most common adverse events (AEs) during R-BAC were hematological: grade 3-4 neutropenia (88%), grade 3-4 thrombocytopenia (64%) and grade 3-4 anemia (36%). The numbers of common grade 3/4 non hematological AEs in the study included: febrile neutropenia (28%), acute coronary syndrome (4%), lung infection (4%) and hyperglycemia (4%). No treatment-related mortality was observed, one patient died of secondary acute myeloid leukemia four years later from induction therapy. Conclusions. The present retrospective study confirms that R-BAC as frontline regimen in MCL is well tolerated and highly effective in ASCT ineligible patients and that it can be administered also in ASCT eligible patients as induction therapy. Moreover, our data suggest that a consolidation therapy (ASCT or maintenance immunotherapy) after R-BAC induction could improve the outcome. Disclosures No relevant conflicts of interest to declare.


Blood ◽  
2020 ◽  
Vol 136 (Supplement 1) ◽  
pp. 36-36
Author(s):  
Mats Jerkeman ◽  
Martin Hutchings ◽  
Riikka Räty ◽  
Karin Fahl Wader ◽  
Anna Laurell ◽  
...  

Introduction: In spite of improvements in treatment of mantle cell lymphoma (MCL), this is still considered an incurable lymphoma entity, and the majority of patients eventually relapse. Ibrutinib is a very active agent in MCL, but in vitro has been shown to partially antagonize the activity of rituximab, by suppression of NK cell activity and subsequent ADCC. Lenalidomide, on the other hand, improves rituximab-induced ADCC. In this multi-centre open-label phase II trial, we evaluated safety and efficacy of this triplet combination in patients with relapsed or refractory MCL. Methods: Patients with MCL, relapsing after or refractory to at least one rituximab-containing chemotherapy regimen, WHO PS 0-3, and measurable disease were eligible. The primary endpoint was maximal overall response rate (ORR) measured with CT and PET/CT. Minimal residual disease (MRD) monitoring by PCR was performed during follow-up, according to EuroMRD criteria. Ion Torrent sequencing of the most frequently mutated genes in MCL was performed on frozen tumor cells from bone marrow at time of relapse. Health-related quality of life was assessed by the EORTC-QLQ C30 questionnaire before and during treatment. Treatment schedule: Induction phase: Up to twelve 28-day cycles with: Lenalidomide 15 mg p o daily, days 1-21, Ibrutinib 560 mg p o days 1-28, Rituximab 375 mg/m2 i v day 1 in cycle 1, then 1400 mg s c (or 375 mg/m2i v) days 8, 15 and 22 in cycle 1, then day 1 in cycles 3, 5, 7, 9 and 11. Maintenance phase: For patients in CR, PR or SD, not in need of other treatment, given until progression, cycle duration 56 days. Ibrutinib: 560 mg p o days 1-56, 2. Rituximab 1400 mg s c (or 375 mg/m2i v) day 1 of each cycle. Results: Accrual of 50 pts was completed in June 2016, at 10 centres in Sweden, Norway, Denmark and Finland. The median age was 69.5 years, with a median MIPI score of 6.2. Patients had received a median of two previous regimens, four had progressed after single agent ibrutinib, and three had received prior allo-SCT. A TP53 mutation was detected in 11 of 49 evaluable cases (22%), 8 cases were of blastoid/pleomorphic histology, and 22 of 40 evaluable cases had a Ki67 >30%. Treatment emergent-AEs of any grade in ≥20% of patients were rash (24%) and fatigue (20%). Five pts (10%) experienced rash grade 3, mainly during cycle 1. Hematological toxicity was generally of low grade, apart from grade 3-4 neutropenia in 5 patients. One patient died due to possible treatment-related toxicity (septic shock). In total, 27 patients achieved CR (54%) and 10 PR (20%). Among evaluable patients with a TP53 mutation, blastoid/pleomorphic histology or Ki67 >30%, the CR rates were 7/11 (64%), 15/8 (62%) and 11/22 (50%), respectively. After a median follow-up of 40 months, the median PFS is 18 months (95% CI 6.5-28), and median OS 47 months (95% CI 30-64). Patients with a detectable TP53 mutation at relapse (n=11) had a median PFS of 13 months (95% CI 4.2-21), whereas pts without a TP53 mutation had a median PFS of 34 months (95% CI 8.3-60). Of the 28 patients evaluable for MRD at 6 months, 15/27 (56%) patients achieved molecular remission in blood and 12/28 (43%) in bone marrow. After 12 months, MRD-negativity in BM was 68% (13/19). Out of 4 patients with TP53-mutated MCL, 2 were MRD-negative in BM after 12 months, as well as 2 out of 4 patients with blastoid/pleomorphic histology. By self-reported HRQOL, a lower level of emotional functioning (EF), as well as a higher level of pain (PA) at baseline, was associated with inferior PFS. In addition, low EF was associated with inferior OS. By a Cox regression multivariable analysis, including MIPI, TP53, histology, Ki67, EF and PA, only MIPI was prognostic for PFS or OS with this regimen. Conclusions: The combination of ibrutinib, lenalidomide and rituximab has been shown to be an active and well tolerated regimen in this cohort of high risk R/R MCL, associated with a high rate of molecular remission. The activity in TP53 mutated MCL is lower than in unmutated disease, but this regimen may still serve as an option for a bridge to an allogeneic transplantation or CAR-T therapy in this category of patients. Disclosures Jerkeman: Roche: Research Funding; Abbvie: Research Funding; Celgene: Research Funding; Janssen: Research Funding; Gilead: Research Funding. Hutchings:Genmab: Honoraria; Genmab: Consultancy; Takeda: Consultancy; Roche: Research Funding; Celgene: Research Funding; Daiichi: Research Funding; Sankyo: Research Funding; Genmab: Research Funding; Janssen: Research Funding; Novartis: Research Funding; Sanofi: Research Funding; Takeda: Research Funding; Roche: Honoraria; Roche: Consultancy; Takeda: Honoraria.


2020 ◽  
Vol 38 (3) ◽  
pp. 248-256 ◽  
Author(s):  
Hanneke C. Kluin-Nelemans ◽  
Eva Hoster ◽  
Olivier Hermine ◽  
Jan Walewski ◽  
Christian H. Geisler ◽  
...  

PURPOSE In an update of the randomized, open-label, phase III European Mantle Cell Lymphoma (MCL) Elderly trial (ClinicalTrials.gov identifier: NCT00209209 ), published in 2012, we aimed to confirm results on long-term outcome focusing on efficacy and safety of long-term use of rituximab maintenance. PATIENTS AND METHODS Five hundred sixty patients with newly diagnosed MCL underwent a first random assignment between rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone (R-CHOP) and rituximab, fludarabine, and cyclophosphamide (R-FC) induction, followed by a second random assignment in 316 responders between rituximab and interferon alfa maintenance, to be continued until progression. We compared progression-free survival from the second randomization and overall survival (OS) from the first or second randomizations. RESULTS After a median follow-up time of 7.6 years, the previously described difference in OS between the induction arms persisted (median, 6.4 years after R-CHOP [n = 280] v 3.9 years after R-FC [n = 280]; P = .0054). Patients responding to R-CHOP had median progression-free survival and OS times of 5.4 and 9.8 years, respectively, when randomly assigned to rituximab (n = 87), compared with 1.9 years ( P < .001) and 7.1 years ( P = .0026), respectively, when randomly assigned to interferon alfa (n = 97). In 58% and 32% of patients treated with R-CHOP, rituximab maintenance was still ongoing 2 and 5 years from start of maintenance, respectively. After R-FC, rituximab maintenance was associated with an unexpectedly high cumulative incidence of death in remission (22% at 5 years). Toxicity of rituximab maintenance was low after R-CHOP (grade 3-4 leukopenia or infection < 5%) but more prominent in patients on rituximab maintenance after R-FC, in whom grade 3-4 leukopenia (up to 40%) and infections were frequent (up to 15%). CONCLUSION The excellent results of R-CHOP followed by rituximab maintenance until progression for older patients with MCL persisted in a mature follow-up. Prolongation of rituximab maintenance beyond 2 years is effective and safe.


Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 2719-2719 ◽  
Author(s):  
Luhua Wang ◽  
Luis Fayad ◽  
Fredrick B. Hagemeister ◽  
Sattva Neelapu ◽  
Felipe Samaniego ◽  
...  

Abstract Abstract 2719 Poster Board II-695 Background: Rituximab directly targets CD20 positive lymphoma cells while lenalidomide targets the microenvironment. This combination was proven effective in vitro and in vivo in mantle cell lymphoma (Wu et al, Clin Cancer Res 2008; Zhang et al, Am J Hematol 2009). Clinically, lenalidomide (Habermann et al, Br J Haematol 2009) and rituximab have single-agent activity in mantle cell lymphoma (MCL) and may be an effective combination. The goal of our study was to determine the maximum tolerated dose (MTD) in phase 1 and evaluate the efficacy and safety of lenalidomide plus rituximab in patients with relapsed/refractory MCL in phase 2. Methods: Patients with relapsed/refractory MCL received lenalidomide on days 1–21 of every 28-day cycle, and rituximab (375 mg/m2) weekly during cycle 1. Dose escalation was used to determine the MTD with lenalidomide (10 mg, 15 mg, 20 mg, and 25 mg). Dose-limiting toxicity (DLT) was defined as grade 3 or 4 non-hematologic, or grade 4 hematologic adverse events in cycle 1. Phase 2 has reached targeted enrolment with 45 patients treated at MTD. Kaplan-Meier method was used to estimate progression free survival rate and response duration. Median time to event in months with 95% confidence interval was calculated. Of 45 patients treated at the MTD, the median age was 66 (46–85), 91% were males. All patients had received prior rituximab and were enrolled regardless of prior rituximab sensitivity or resistance. Results: The median follow-up time for the censored observations was 11.4 months. Two DLTs occurred at 25 mg in phase 1 (hypercalcemia, non-neutropenic fever); therefore, the MTD was 20 mg. The grade 3–4 non-hematologic events included elevated AST, elevated ALT, fatigue, myalgia, tremors, ataxia, cough, deep vein thrombosis, dyspnea, edema (facial), infection, neuropathy sensory, rash, and respiratory failure. Grade 3–4 hematologic adverse events included neutropenia (37 events), neutropenic fever (4 events), and thrombocytopenia (16 events). There were no responses in patients treated at 10 mg or 15 mg. Thirty six patients (36) were evaluable for response. Nine (9) patients are too early in their treatment and are not yet eligible for response evaluation. Among the 36 evaluable patients, 11 (31%) patients achieved CR, 8 (22%) patients achieved PR, 3 (8%) patients had minor response, 6 (17%) patients had stable disease and 8 (22%) patients had progressive mantle cell lymphoma. The overall response rate (CR + PR) was 53%. Seventy eight (78%) patients achieved stable disease or better and benefited from oral Lenalidomide plus 4 doses of rituximab. The median time to response was 2 months (2–8), and the median duration of response for the 19 patients with CR or PR was 18 months (95% CI: 10.6, NA) (range1–30 months). The median progression free survival for all patients on phase 2 was 14 months (95% CI: 9.8, NA) (ranging from 1–32 months). Conclusion: Oral lenalidomide plus rituximab resulted in durable responses in relapsed/refractory MCL with a favourable toxicity profile. Disclosures: Wang: Celgene: Honoraria, Research Funding. Hagemeister:Celgene Corporation: Consultancy. Samaniego:Celgene Corporation: Research Funding. Yi:Celgene Corporation: Research Funding. Shah:Celgene Corporation: Consultancy, Research Funding, Speakers Bureau; Amgen: Consultancy, Speakers Bureau; Novartis: Consultancy, Speakers Bureau; Elan: Consultancy; Millennium: Research Funding, Speakers Bureau. Bell:Celgene Corporation: Employment, Equity Ownership. Knight:Celgene Corporation: Employment, Equity Ownership, Membership on an entity's Board of Directors or advisory committees. Zeldis:Celgene: Employment, Equity Ownership, Membership on an entity's Board of Directors or advisory committees.


Blood ◽  
2010 ◽  
Vol 116 (21) ◽  
pp. 110-110 ◽  
Author(s):  
Olivier Hermine ◽  
Eva Hoster ◽  
Jan Walewski ◽  
Vincent Ribrag ◽  
Nicole Brousse ◽  
...  

Abstract Abstract 110 Background: Mantle Cell Lymphoma (MCL) has been characterized by poor long term prognosis with a median survival of only 3 to 4 years. However, outcome has improved during the last decades. In its first randomized trial, the MCL net demonstrated that myeloablative consolidation followed by ASCT resulted in a significant prolongation of PFS in advanced stage MCL (Dreyling et al Blood 2005). Recent phase II studies suggested that the addition of rituximab to CHOP like chemotherapy and/or high dose ARA-C may significantly improve remission rates and PFS. A French phase II trial using sequential R-CHOP/R-DHAP followed by ASCT showed an overall response rate of 95% with a CR rate of 61% translating into a median EFS of 83 months and a 75% survival rate at 5 years (Delarue et al ASH 2008). Methods: To evaluate the potential superiority of a high dose ARA-C containing regimen, the MCL net initiated a randomized trial comparing 6 courses of CHOP plus Rituximab followed by myeloablative radiochemotherapy (12 Gray TBI, 2×60mg/kg Cyclophosphamide) and ASCT (control arm A) versus alternating courses of 3x CHOP and 3x DHAP plus Rituximab followed by a high dose ARA-C containing myeloablative regimen (10 Gray TBI, 4×1,5 g/m2 Ara-C, 140mg/m2 melphalan) and ASCT (experimental arm B). Patient eligibility criteria included previously untreated MCL stage II-IV up to the age of 65 years. Histological diagnosis was confirmed by a central pathology review board. The primary end point time to treatment failure (TTF) was monitored continuously by a sequential procedure based on a one sided triangular test. Stable disease after induction, progression or death from any causes, were considered as treatment failure. Sample size was calculated to detect a hazard ratio of 52% for arm B with a power of 95%. Randomization was stopped as soon as a significant difference was observed between the two arms. Results: From July 2004 to May 2010, 497 patients were randomized in 4 countries (Germany, France, Poland, Belgium). The 391 patients evaluable for the primary analysis (19 no MCL, 87 not yet documented) displayed similar characteristics in both treatment arms: median age 55 vs 56 years, male 78% vs 79%, stage IV 85% vs 79%, B symptoms 43% vs 33%, ECOG >2 5% vs 5%, elevated LDH 37% vs 38%, and MIPI low/int/high risk 61%/25%/14% vs 62%/23%/15%, respectively. After induction overall response was similarly high in both arms (A: 90% vs B: 94%; p=0.19) and CR rate and combined CR/CRu rate were significantly higher in arm B (26% vs 39%; p=0.012 and 41% vs 60%; p=0.0003). The number of patients transplanted was similar in both arms (72% vs 73%) and after transplantation overall response and CR rates were comparable in both arms (97% vs 97% and 63% vs 65%, respectively). After a median follow up of 27 months, patients in arm B experienced a significantly longer TTF (49 months vs NR; p=0.0384, hazard ratio 0.68) mainly due to a lower number of relapses after CR/CRu/PR (20% vs 10%), whereas the rate of ASCT-related deaths in remission was similar in both arms (3% vs 4%). Although CR rate after ASCT was comparable in both arms, remission duration (RD) after ASCT was superior in Arm B (48m vs NR; p=0.047). Interestingly, for patients in CR after ASCT, RD after ASCT was also presumably superior in arm B (51 months vs NR; p=0.077). At the time of analysis overall survival was similar in both arms with medians not reached and 79% vs. 80% survival rates at 3 years (p=0.74). Safety after induction was comparable in both arms except for an increased grade 3/4 hematological toxicity (Hb 8% vs 28%, WBC 48% vs 75%, platelets 9% vs 74%, respectively), an excess of renal toxicity (creatinine grade 1/2: 8% vs 38%, grade 3/4: none vs 2%), and more frequent grade 1/2 nausea and vomiting in arm B. Toxicities of both conditioning regimen were similar, except for higher grade 3/4 mucositis (43% vs. 61%) in Arm B, and higher grade 1/2 liver toxicity and constipation in Arm A. Conclusions: High dose ARA-C in addition to R-CHOP+ASCT increases significantly complete response rates and TTF without clinically relevant increase of toxicity. Therefore, induction regimen containing high dose ARA-C followed by ASCT should become the new standard of care of MCL patients up to 65 years. Disclosures: Walewski: Roche: Membership on an entity's Board of Directors or advisory committees, Speakers Bureau. Stilgenbauer:Amgen: Research Funding; Bayer: Consultancy, Honoraria, Research Funding; Boehringer-Ingelheim: Consultancy, Honoraria, Research Funding; Celgene: Consultancy, Honoraria, Research Funding; Genzyme: Consultancy, Honoraria, Research Funding; GSK: Consultancy, Honoraria, Research Funding; Mundipharma: Consultancy, Honoraria, Research Funding; Roche: Consultancy, Honoraria, Research Funding; Sanofi Aventis: Research Funding. Feugier:roche: Consultancy, Honoraria. Bosly:Roche: Membership on an entity's Board of Directors or advisory committees. Gisselbrecht:Roche: Research Funding.


Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 150-150 ◽  
Author(s):  
Peter Martin ◽  
Kristie Blum ◽  
Nancy L. Bartlett ◽  
Steven I. Park ◽  
Kami J. Maddocks ◽  
...  

Abstract Background Single-agent ibrutinib confers a response rate of 77%, including a complete response (CR) rate of 19% in patients with previously treated mantle cell lymphoma (MCL); however, with a median progression-free survival (PFS) of 14.6 months and 1-year response duration (RD) rate of 69%, nearly half of all patients experience treatment failure during the first year. We previously demonstrated that prolonged early G1 cell cycle arrest induced by the oral, specific CDK4/6 inhibitor palbociclib can overcome ibrutinib resistance in primary human samples and MCL cell lines with wild-type BTK (Chiron et al. Cancer Discovery 2014). We conducted a phase I trial to evaluate the safety and preliminary activity of palbociclib plus ibrutinib in patients with previously treated mantle cell lymphoma. Methods Adult patients who were ibrutinib and CDK4/6 inhibitor-naïve who had previously treated MCL were eligible to participate. The primary objective was to estimate the maximum tolerated dose of the combination. Consenting patients were enrolled to one of five dose levels, shown in Table 1. Patients were treated in 28 day cycles, with ibrutinib administered daily and palbociclib administered on days 1-21. (Table 1). Patients could continue to receive study treatment until progression, unacceptable toxicity, or withdrawal of consent. Doses were escalated according to a standard phase I 3+3 design. Patients were evaluated for efficacy at the end of cycles 3 and 6, and every 6 cycles thereafter. All CRs, as documented by CT, required confirmation by PET/CT; bone marrow biopsy and endoscopy were also required in patients with known marrow or GI tract involvement, respectively. Additional objectives included pharmacokinetics and evaluation of pretreatment samples for biomarkers of response or resistance. Results From August 2014 to June 2016 a total of 20 patients (15 males, 5 females) were enrolled (DL1 n=3, DL2 n=3, DL3 n=6, DL4 n=3, DL5 n=5). The patients' MIPI risk distribution were 7 low, 7 intermediate, and 6 high. The median number of prior therapies was 1 (range 1-5). Six patients were refractory to their last prior therapy. Three patients experienced dose limiting toxicity: One patient treated at DL3 experienced grade 4 thrombocytopenia lasting more than 7 days, and grade 3 rash was seen in two patients at DL5. Grade 3-4 hematological toxicity included thrombocytopenia (28%), neutropenia (22%), and lymphopenia (17%). Grade 3-4 non-hematological toxicity regardless of attribution included one patient with each of the following: lung infection, ALT/AST increase, encephalitis, hyponatremia, sinus tachycardia, pneumonitis. Grade 1-2 adverse events related to treatment and occurring in at least 2 patients included the following: diarrhea (50%), fatigue (44%), rash (39%), bruising (17%), nausea (17%), fever (11%), dyspepsia (11%), and myalgia (11%). Other than the two patients that experienced grade 3 rash at DL5, no patients have required dose reductions; 6 patients required dose interruptions. Thirteen subjects continue on study therapy. The reasons for stopping treatment were disease progression (n=4), adverse event (elevated liver enzymes, n=1; and prolonged cytopenias, n=1), and allogeneic stem cell transplantation (n=1). Of the 18 patients that have had at least one response evaluation to date, 12 (67%) patients responded to treatment and 8 (44%) achieved a CR. The median time to CR was 3 cycles and no responding patients have progressed on study. With a median follow up of 11 months, the estimated 1-year PFS and RD are 68% and 100%, respectively (Figure 1). Conclusions The mechanism-based combination of ibrutinib plus palbociclib is well tolerated and active. Toxicity is primarily related to myelosuppression of grade 1-2 severity, although grade 3 rash was observed at the highest doses evaluated. In this small group of patients, the combination produced responses at all dose levels, with a CR rate of 44% and a median time to CR of 3 months. No responding patients have progressed to date. These preliminary CR, PFS, and RD rates appear better than those reported in other studies of single-agent ibrutinib although the numbers of patients was very small. A phase II multi-center clinical trial to evaluate time to progression is planned. Biomarker studies to evaluate mechanisms of primary resistance are ongoing. Disclosures Martin: Janssen: Consultancy, Honoraria, Other: travel, accommodations, expenses; Celgene: Consultancy, Honoraria; Gilead: Consultancy, Other: travel, accommodations, expenses; Novartis: Consultancy; Acerta: Consultancy; Teva: Research Funding. Ruan:Celgene: Consultancy, Honoraria, Research Funding, Speakers Bureau; Seattle Genetics: Consultancy, Research Funding, Speakers Bureau; Pharmacyclics, LLC, an AbbVie Company: Research Funding, Speakers Bureau; Janssen: Research Funding.


Blood ◽  
2016 ◽  
Vol 128 (22) ◽  
pp. 1775-1775
Author(s):  
Wojciech Jurczak ◽  
Sundra Ramanathan ◽  
Pratyush Giri ◽  
Francesco Di Raimondo ◽  
Heidi Mocikova ◽  
...  

Abstract Introduction: Temsr (Torisel®) administered at 175 mg IV once weekly for first 3 weeks, followed by 75mg IV once weekly (Temsr 175/75 mg) is approved in the European Union for the treatment of adult patients with relapsed and/or refractory MCL based on an overall positive benefit-risk relationship demonstrated for this treatment regimen in the pivotal phase III study (Hess et al. J Clin Oncol. 2009;27:3822-9). This ongoing phase 4, multicenter, randomized, open-label study was conducted to explore whether similar efficacy can be achieved for the treatment of patients with relapsed/refractory MCL with a Temsr regimen that is expected to yield fewer side effects than the Temsr 175/75 mg dose regimen, by skipping the first 3 doses of Temsr 175 (Clinicatrials.gov: NCT01180049). Methods: In this study, previously treated (2-7 lines of prior therapy) patients with relapsed/refractory mantle cell lymphoma were stratified by the histologic subtype (blastoid vs. non blastoid vs unknown histology) and randomized (1:1) to receive Temsr 175/75 mg, or 75mg IV once weekly (Temsr 75 mg). Treatment continued until disease progression, provided that patients were tolerating treatment and achieving clinical benefit. The primary endpoint was progression-free survival (PFS) based on independent assessment. Secondary endpoints included objective response rate (ORR), overall survival (OS) and safety with a particular focus on bleeding- and infection-related adverse events (AEs). Results: Of the 90 patients (77.8% males; 93.3% white, mean age 66.6 years) randomized, 47 were treated with Temsr 175/75 mg, 42 were treated with Temsr 75 mg, and 1 patient was randomized but not treated. At the cutoff date for analysis (November 12, 2015), 39 (83.0%) patients in Temsr 175/75 mg arm and 41 (95.3%) patients in Temsr 75 mg arm discontinued treatment with the primary reason being objective disease progression (53.8% in Temsr 175/75 mg and 56.1% in Temsr 75 mg). Median duration of treatment was comparable in the Temsr 175/75 mg arm and Temsr 75 mg arm (3.2 vs. 3.1 months). Median PFS (80% CI) was 4.3 (3.3-6.4) months in Temsr 175/75 mg arm versus 4.5 (2.7-4.9) months in Temsr 75 mg arm (hazard ratio [HR] 0.731; 80% CI 0.520-1.027). ORR (80% CI) was 27.7% (19.1%-37.7%) in Temsr 175/75 mg arm versus 20.9% (13.0%-31.0%) in Temsr 75 mg arm. Median OS (80% CI) was 18.7 (7.5-48.2) months in Temsr 175/75 mg arm versus 11.0 (6.3-16.2) months in Temsr 75 mg arm (HR 0.681, 80% CI 0.472-0.982). Median duration of response was comparable in both treatment arms (9.0 vs. 8.7 months in Temsr 175/75 mg and Temsr 75 mg arms, respectively). Overall, the safety profile was comparable in both treatment arms, although the number of patients with serious AEs, dose reduction and deaths was lower in the 175/75mg arm compared with 75 mg arm (57.4%, 48.9% and 48.9% vs. 73.8%, 64.3% and 65.1%, respectively), and the number of treatment discontinuations due to AEs was higher in the Temsr 175/75mg arm compared with 75mg arm (19.1% vs. 14.3%). Common (>10%) grade ≥3, all-causality, treatment-emergent AEs in the Temsr 175/75 mg arm and Temsr 75 mg arm, respectively, were thrombocytopenia (46.8% vs. 38.1%), neutropenia (25.5% vs. 21.4%), and pneumonia (10.6% vs. 19.0%). Treatment-emergent bleeding-related grade ≥2 AEs in the Temsr 175/75 mg arm and Temsr 75 mg arm, respectively, included epistaxis (10.6% vs. 2.4%) and ecchymosis (2.1% vs. 0). Only 1 grade 3 AE of epistaxis which was not related to Temsr was reported in the Temsr 175/75 arm, and no grade 3 events were reported in Temsr 75 arm. Pneumonia was the most commonly occurring treatment-emergent infection-related grade ≥2 AEs 12.8% in Temsr 175/75 mg arm and 19.0% in Temsr 75 mg arm. Of the 51 deaths reported during the study, none were treatment-related and most were due to disease progression. Conclusions: Overall, PFS, ORR and OS favored the Temsr 175/75 arm, although no formal statistical conclusions were made as the study was not powered for differences. The safety profile in both study arms was comparable, but there was a lower incidence of serious AEs, dose reductions and deaths in the 175/75 mg arm. Temsr 175/75 mg remains the preferred dose regimen for patients with relapsed/refractory MCL. Disclosures Jurczak: Sandoz - Novartis, Morphosys, Roche: Speakers Bureau; Acerta, Novartis, Pfizer, Celgene, Gillead, Janssen, Celtrion, Bayer, Morphosys, Takeda, Servier, Teva, and Roche: Research Funding; Morphosys: Consultancy. Clancy:Pfizer Inc: Consultancy. Lechuga:Pfizer Inc: Employment, Equity Ownership. Casey:Pfizer Inc: Employment, Equity Ownership. Boni:Pfizer Inc: Employment, Equity Ownership. Hess:Roche, CTI, Pfizer, Celgene: Research Funding; Janssen: Honoraria; Roche: Honoraria; Celgene: Honoraria; Novartis: Honoraria; Pfizer: Honoraria.


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