scholarly journals Temsirolimus Has Activity in Non–Mantle Cell Non-Hodgkin's Lymphoma Subtypes: The University of Chicago Phase II Consortium

2010 ◽  
Vol 28 (31) ◽  
pp. 4740-4746 ◽  
Author(s):  
Sonali M. Smith ◽  
Koen van Besien ◽  
Theodore Karrison ◽  
Janet Dancey ◽  
Peter McLaughlin ◽  
...  
Keyword(s):  
Follicular Lymphoma ◽  
Response Rate ◽  
Cell Lymphoma ◽  
Single Agent ◽  
B Cell Lymphoma ◽  
Complete Response ◽  
Mantle Cell ◽  
Group A ◽  
Group B ◽  
Indolent Lymphomas

PurposeDespite high initial remission rates, most lymphomas relapse and require further therapy. The mammalian target of rapamycin (mTOR) pathway is a validated target in mantle cell lymphoma, but has not been extensively evaluated in other lymphomas.Patients and MethodsWe performed a phase II trial of single-agent temsirolimus 25-mg weekly in patients with relapsed aggressive and indolent lymphomas. The primary objective was overall and complete response rate. Patients were stratified by histology: group A (diffuse large B-cell lymphoma, transformed follicular lymphoma), group B (follicular lymphoma), and group C (chronic lymphocytic leukemia/small lymphocytic lymphoma, and other indolent lymphomas).ResultsEighty-nine patients were treated, with outcome strongly dependent on histology. Group A had an overall and complete response rate of 28.1% and 12.5%, respectively, and median progression-free survival (PFS) of 2.6 months and median overall survival (OS) of 7.2 months. Group B had overall and complete response rates of 53.8% and 25.6%, respectively, and median PFS of 12.7 months; median OS has not yet been reached. Group C had a partial response rate of 11% with no complete responders. Toxicity was mainly mild and/or reversible myelosuppression and mucositis; however, four patients developed pneumonitis.ConclusionsSingle-agent temsirolimus has significant activity in both diffuse large B-cell lymphoma and follicular lymphoma, although the durability of responses and PFS are longer for patients with follicular lymphoma. This is the first report of substantial activity of temsirolimus in lymphomas other than mantle cell lymphoma, and supports further evaluation of mTOR as a target in these diseases.

Phase II Study of Rituximab and Cladribine (2-CDA) in Newly Diagnosed Mantle Cell Lymphoma (MCL) (N0189).

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 2746-2746 ◽  
Author(s):  
David James Inwards ◽  
David W. Hillman ◽  
Paul A. Fishkin ◽  
William L. White ◽  
Roscoe F. Morton ◽  
...  
Keyword(s):  
Mantle Cell Lymphoma ◽  
Phase Ii ◽  
Response Rate ◽  
Phase Ii Study ◽  
Cell Lymphoma ◽  
Single Agent ◽  
Stage Iv ◽  
Complete Response ◽  
Mantle Cell ◽  
To Receive

Abstract Background: A previous trial of 2-CDA as a single agent for therapy of mantle cell lymphoma demonstrated this agent to be efficacious with an overall response rate of 81% (31% complete responses) (Blood 1999 Nov 15; 94:660a). A phase II study of the addition of rituximab to 2-CDA was conducted by the North Central Cancer Treatment Group based on improved outcomes achieved by the addition of rituximab to other regimens active in MCL. Methods: This one-stage phase II study was designed to determine the complete response (CR) or complete response/unconfirmed (CRu) rate. Central pathology confirmation of cyclin D1 positive mantle cell lymphoma was required. No previous therapy for lymphoma was allowed, with the exception of splenectomy. The schedule was rituximab 375 mg/m2 IV day 1; 2-CDA 5 mg/m2/d IV days 1–5 of a 4-week cycle. After 2 of the first 6 patients developed grade 4 neutropenia, subsequent patients received either pegfilgrastim or filgrastim support. Patients received 2–6 cycles of therapy, depending on response. Patients were required to achieve at least a PR after 2 cycles of therapy to continue on protocol therapy. Results: Patient characteristics of all 29 eligible pts: median age: 70 (range: 41–86); 21 male, 8 female; PS 0 (55.2%), PS 1 (41.4%), PS 2 (3.5%); stage II (6.9%), stage III (3.5%), stage IV (89.7%); prior splenectomy (20.7%). The only grade 4 adverse events occurring more than once were neutropenia (24.1%) and leucopenia (6.9%). One patient died of cerebral ischemia in the setting of pneumonia without neutropenia. Fifteen (51.7%; 95% CI: 32.5–70.6%) pts achieved a CR; only one has relapsed to date (665 days after starting therapy). Four additional pts achieved a PR. Ten pts have progressed with 4 pts progressing early at 17, 45, 46, and 71 days (two of whom have died). Ten pts (34.0%) went on to receive further therapy off study, 5 in less than a PR after 2 cycles, 2 in PR after study therapy, and 1 who went off study for a rash. Fourteen pts (48.3%) have progressed or gone on to receive additional therapy off study. At last contact, 26 (89.7%) were alive (median follow-up 14.3 months; range: 6–34). One year survival rate is 89.3% (95% CI: 78.5–100). Conclusions: Rituximab and cladribine were well tolerated for the treatment of MCL in a group of elderly patients. The response rate may have been underestimated due to the study design, which required at least a PR after 2 cycles to continue therapy. Despite this, 52% achieved a complete remission. Complete remissions attained with this regimen appear to be durable, with a single relapse to date among 15 patients achieving CR.

Radioimmunotherapy In Relapsed/Refractory Mantle Cell Lymphoma Patients: Final Results Of a European MCL Network Phase II Trial

Blood ◽  
2013 ◽  
Vol 122 (21) ◽  
pp. 4384-4384 ◽  
Author(s):  
Simone Ferrero ◽  
Alessandro Pastore ◽  
Roswitha Forstpointner ◽  
Christian W. Scholz ◽  
Antonio Pezzutto ◽  
...  
Keyword(s):  
Mantle Cell Lymphoma ◽  
Board Of Directors ◽  
Response Rate ◽  
Cell Lymphoma ◽  
Advisory Committees ◽  
Bulky Disease ◽  
Mantle Cell ◽  
Group A ◽  
Grade 3 ◽  
Group B

Abstract Background Great efforts have been made in the last years to improve the therapeutical options of patients with mantle cell lymphoma (MCL), a distinct lymphoma subtype characterized by dismal long term prognosis. Although radioimmunotherapy (RIT) has been shown to be effective in follicular lymphoma, only one single-center experience of 31 evaluable patients has been published so far in relapsed MCL [Wang et al., JCO 2009]. The European MCL Network conducted a phase II, prospective, multicenter trial evaluating a single dose of yttrium-90-ibritumomab tiuxetan (90Y-IT) as reinduction or consolidation in patients with relapsed or refractory MCL. Patients and Methods Relapsed or refractory MCL patients after or not eligible for autologous stem cell transplantation (ASCT) with<25% bone marrow involvement received a single infusion of rituximab (250 mg/m2, day 1) followed by a sequential infusion of rituximab and 90Y-IT 0.4 mCi/kg on day 8 (0.3 mCi/kg if thrombocytes<150000/μl or prior ASCT: group A). In patients with high tumor load a short prior immuno-chemotherapy (e.g. 3 cycles of rituximab-bendamustin) was allowed (group B). The primary study objective was response rate (complete/partial responses, CR/PR), secondary objectives were progression-free survival (PFS), overall survival (OS), as well as safety of 90Y-IT. Results Between June 2004 and September 2008, 48 eligible patients were enrolled (16 group A, 32 group B) and 45 are evaluable for response. Median age was 68 years, 75% were males. Seventy-three % presented with high or intermediate risk MCL international prognostic index (MIPI), 42% with elevated lactate dehydrogenase, and 29% had bulky disease. Median number of previous therapies was 2 (range 1-5) in group A and 4 (range 1-6) in group B; 98% of patients received prior rituximab, 29% prior radiotherapy, 13% prior ASCT, 0% prior new agents and 15% had chemorefractory disease. The major toxicities consisted of myelosuppression, with thrombocytopenia in 21 patients (53%), neutropenia in 13 (33%) and anemia in 9 (23%; all grade 3/4, respectively), and one lethal bleeding. Non-hematologic grade 3/4 toxicities were gastrointestinal (n=3), infectious (n=1), and neurological (n=1), with a single patient (2%) developing a secondary myelodysplasia. Overall response rate (ORR) was 40% (20% CR) in group A and 72% (38% CR) in group B, with 5 patients converting from PR to CR. After a median follow-up of 38 months (range: 24-53 months), median PFS was 3.7 months in group A and 8.9 months in group B, translating in a median OS of 13.8 months and 31.2 months, respectively (Figure 1). In the 25 90Y-IT responders, PFS and OS were 23 months and 33.7 months, respectively, and patients responding to immunochemotherapy (group B) also showed a more favorable time to progression (16.9 months). No difference in survival rates was noticed according to MIPI, bulky disease, number and type of previous therapies, chemorefractoriness, and median time from initial diagnosis. Conclusions To the best of our knowledge, this is the largest trial assessing 90Y-IT therapy in relapsed/refractory MCL patients. Response rates in heavily pre-treated patients were comparable to those of other targeted approaches, though 90Y-IT showed a more favorable toxicity profile. Our experience suggests, that RIT applied as consolidation therapy might be the preferred approach, seeming to improve the quality and duration of response. Finally, responses appear to be independent from established risk factors and previous therapies. Further evaluation of the role of 90Y-IT in first-line therapy of MCL patients is ongoing. Disclosures: Off Label Use: Zevalin for treatment of relapsed mantle cell lymphoma. Scholz:Bayer: Speakers Bureau; Spectrum: Membership on an entity’s Board of Directors or advisory committees, Speakers Bureau. Keller:Sepropharm: Consultancy. Dreyling:Jannsen: Membership on an entity’s Board of Directors or advisory committees, Speakers Bureau, support of ITS, support of ITS Other; Celgene: Membership on an entity’s Board of Directors or advisory committees, Speakers Bureau, support of ITS Other; Pfizer: Membership on an entity’s Board of Directors or advisory committees, Speakers Bureau, support of ITS , support of ITS Other; Roche: Speakers Bureau, support of ITS , support of ITS Other; Mundipharma: support of ITS Other.

Phase II study of rituximab and cladribine (2-CDA) in newly diagnosed mantle cell lymphoma (MCL) (N0189)

2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 17505-17505
Author(s):  
D. J. Inwards ◽  
D. W. Hillman ◽  
P. A. Fishkin ◽  
W. L. White ◽  
R. F. Morton ◽  
...  
Keyword(s):  
Mantle Cell Lymphoma ◽  
Phase Ii ◽  
Response Rate ◽  
Phase Ii Study ◽  
Cell Lymphoma ◽  
Single Agent ◽  
Stage Iv ◽  
Patient Characteristics ◽  
Complete Response ◽  
Mantle Cell

17505 Background: A previous trial of 2-CDA as a single agent for therapy of mantle cell lymphoma demonstrated this agent to be efficacious with an overall response rate of 81% (31% complete responses) (Blood 1999 Nov 15; 94:660a). A phase II study of the addition of rituximab to 2-CDA was conducted by the North Central Cancer Treatment Group based on improved outcomes achieved by the addition of rituximab to other regimens active in MCL. Methods: This one-stage phase II study was designed to determine the complete response (CR) or complete response/unconfirmed (CRu) rate. Central pathology confirmation of cyclin D1 positive mantle cell lymphoma was required. No previous therapy for lymphoma was allowed, with the exception of splenectomy. The shedule was rituximab 375 mg/m2 IV day 1; 2-CDA 5 mg/m2/d IV days 1–5 of a 4-week cycle. After 2 of the first 6 patients developed grade 4 neutropenia, subsequent patients received either pegfilgrastim or filgrastim support. Patients received 2–6 cycles of therapy, depending on response. Patients were required to achieve at least a PR after 2 cycles of therapy to continue on protocol therapy. Results: Patient characteristics of all 29 eligible pts: median age: 70 (range: 41–86); 21 male, 8 female; PS 0 (55.2%), PS 1 (41.4%), PS 2 (3.5%); stage II (6.9%), stage III (3.5%), stage IV (89.7%); prior splenectomy (20.7%). The only grade 4 adverse event occurring more than once was neutropenia (20.7%). One patient died of cerebral ischemia in the setting of pneumonia without neutropenia. Response has been determined in 26 pts with 50.0% (95% CI: 30.0–70.0%) achieving a CR, none of whom have relapsed to date. Three patients progressed early at 17, 45, and 46 days, two of whom have died, and a fourth relapsed day 222. 10 pts (34.0%) went on to receive further therapy off study, 5 in less than a PR after 2 cycles, 2 in PR after study therapy, and 1 who went off study for a rash. At last contact, 26 (89.7%) were alive (median follow-up 10.7 months; range: 1–28). Conclusions: Rituximab and cladribine were well tolerated for the treatment of MCL in a group including elderly patients. The response rate may have been underestimated due to the study design, which required at least a PR after 2 cycles to continue therapy. Despite this, 50% achieved a complete remission. [Table: see text]

Results From a Pivotal, Open-Label, Phase II Study of Romidepsin in Relapsed or Refractory Peripheral T-Cell Lymphoma After Prior Systemic Therapy

2012 ◽  
Vol 30 (6) ◽  
pp. 631-636 ◽  
Author(s):  
Bertrand Coiffier ◽  
Barbara Pro ◽  
H. Miles Prince ◽  
Francine Foss ◽  
Lubomir Sokol ◽  
...  
Keyword(s):  
T Cell ◽  
Phase Ii ◽  
Systemic Therapy ◽  
Response Rate ◽  
Cell Lymphoma ◽  
Single Agent ◽  
Complete Response ◽  
T Cell Lymphoma ◽  
Peripheral T Cell Lymphoma ◽  
Prior Systemic Therapy

Purpose Romidepsin is a structurally unique, potent class 1 selective histone deacetylase inhibitor. The primary objective of this international, pivotal, single-arm, phase II trial was to confirm the efficacy of romidepsin in patients with relapsed or refractory peripheral T-cell lymphoma (PTCL). Patients and Methods Patients who were refractory to at least one prior systemic therapy or for whom at least one prior systemic therapy failed received romidepsin at 14 mg/m2 as a 4-hour intravenous infusion on days 1, 8, and 15 every 28 days. The primary end point was the rate of complete response/unconfirmed complete response (CR/CRu) as assessed by an independent review committee. Results Of the 131 patients enrolled, 130 had histologically confirmed PTCL by central review. The median number of prior systemic therapies was two (range, one to eight). The objective response rate was 25% (33 of 130), including 15% (19 of 130) with CR/CRu. Patient characteristics, prior stem-cell transplantation, number or type of prior therapies, or response to last prior therapy did not have an impact on response rate. The median duration of response was 17 months, with the longest response ongoing at 34+ months. Of the 19 patients who achieved CR/CRu, 17 (89%) had not experienced disease progression at a median follow-up of 13.4 months. The most common grade ≥ 3 adverse events were thrombocytopenia (24%), neutropenia (20%), and infections (all types, 19%). Conclusion Single-agent romidepsin induced complete and durable responses with manageable toxicity in patients with relapsed or refractory PTCL across all major PTCL subtypes, regardless of the number or type of prior therapies. Results led to US Food and Drug Administration approval of romidepsin in this indication.

Anti-Tumor Activity of Single-Agent CCI-779 for Relapsed Mantle Cell Lymphoma: A Phase II Trial in the North Central Cancer Treatment Group.

Blood ◽  
2004 ◽  
Vol 104 (11) ◽  
pp. 129-129 ◽  
Author(s):  
Thomas Witzig ◽  
Susan Geyer ◽  
Irene Ghobrial ◽  
David Inwards ◽  
Rafael Fonseca ◽  
...  
Keyword(s):  
Cyclin D1 ◽  
Mantle Cell Lymphoma ◽  
Median Time ◽  
Response Rate ◽  
Cell Lymphoma ◽  
Single Agent ◽  
Pi3k Pathway ◽  
Mantle Cell ◽  
Grade 3 ◽  
Anti Tumor Activity

Abstract Purpose: Mantle cell lymphoma (MCL) is characterized by a t(11;14) resulting in overexpression of cyclin D1, a member of the phosphatidylinosital 3 kinase (PI3K) pathway. This study tested whether CCI-779, which inhibits the PI3K pathway at the level of the mammalian target of rapamycin (mTOR) could produce tumor responses in patients (pts) with MCL. Patients and Methods: Eligible pts had biopsy-proven, cyclin D1 positive MCL and had relapsed or were refractory to therapy. Pts received CCI-779 250 mg IV every week as a single agent. Pts were re-staged after 1 cycle (4 doses) and every 3 cycles thereafter. Pts with a tumor response after 6 cycles were eligible to continue drug for a total of 12 cycles or 2 cycles after complete remission (CR) and then were observed. Results: Thirty-five pts were enrolled and evaluable for toxicity; 1 patient had MCL by histology but was cyclin D1 negative and ineligible for efficacy evaluation. The median age was 70 years (range, 38–89), 91% were stage 4, and 69% had ≥ 2 extranodal sites. Pts had received a median of 3 prior therapies (range, 1–11) and 54% were refractory to their last treatment. The overall response rate was 38% (13/34) with 1 CR (3%) and 12 PRs (35%), surpassing the pre-defined criteria for a promising agent. Responses tended to occur rapidly with median time to response of 1 month (range, 1–8). To date, 26 patients have progressed, with a median time-to-progression of 6.8 months (95% CI: 3.8 – 9.7). Median duration of response for the 13 responders was 5.7 months (95% CI: 5.2 – 13.2). Overall, 32 out of 35 patients who received treatment had grade 3 or 4 toxicity. The most common toxicities were hematologic with grade 3 (n=24) or grade 4 (n=4). Thrombocytopenia was the most frequent grade 3/4 toxicity (n=25) and the largest cause of dose-reductions, although counts typically recovered within one week. Only 4 patients could tolerate sustained 250 mg per week throughout their treatment (including one who went on to alternate treatment after 1 cycle) and the median dose/month was 175 mg. Conclusions: Single-agent CCI-779 has substantial anti-tumor activity in relapsed MCL. This study demonstrates that agents, which selectively target cellular pathways dysregulated in MCL cells can produce therapeutic benefit. The high response rate warrants further studies of this agent in MCL, but the high incidence of hematologic toxicity suggests that a lower dose should be explored. CCI-779 at 25mg is currently being evaluated in MCL through an NCCTG trial

Favorable Results of Rituximab in Combination with CHOP in the Front-Line Treatment of Follicular Lymphoma Grade 3.

Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 2770-2770
Author(s):  
Luis Fayad ◽  
Michael Overman ◽  
Barbara Pro ◽  
Peter McLaughlin ◽  
Felipe Samaniego ◽  
...  
Keyword(s):  
Follicular Lymphoma ◽  
B Cell ◽  
Response Rate ◽  
Cell Lymphoma ◽  
B Cell Lymphoma ◽  
Bulky Disease ◽  
Large B Cell Lymphoma ◽  
Grade 3 ◽  
Large B Cell

Background: Follicular lymphoma grade 3 has a natural history that is more akin to that of diffuse large B-cell lymphoma. The addition of rituximab to standard CHOP has resulted in improved response and survival in diffuse large B-cell lymphoma. Information about outcomes in follicular lymphoma grade 3 is lacking. Methods: A single institution retrospective review of patients with follicular grade 3 lymphoma evaluated at the UTMDACC from 1999 to 2004. Patients were located from the UTMDACC lymphoma database. All patients were initially treated with R-CHOP. Results: Forty-five patients were identified: 51% male, 47% ≥60 years, and 87% follicular grade 3b. The LDH was elevated in 24%, ECOG performance status was >1 in 2%, and >1 site of extranodal involvement was present in 10%. Stage distribution was 11% stage I, 11% stage II, 42% stage III, and 36% stage IV, bulky disease (>7cm) was present in 11%, and B symptoms occurred in 13%. Beta-2 microglobulin was elevated in 57% with values >3 μg/dL in over 50%. IPI distribution was: 46% IPI Low, 38% LI, 11% IH, and 4% IPI High. Overall response rate was 100% with 96% complete responses. Relapse rate by IPI category was 24% for Low IPI, 18% for IPI LI, and 40% for IPI IH, and 100% for the two patients with High IPI. With median follow-up of 33 months, three year failure-free survival (FFS) is 73% (95% CI: 59 to 87%). One patient died (2%) with an overall survival (OS) at three years of 97% (95% CI: 93 to 100%). Conclusion: The addition of rituximab to CHOP provided a high response rate and excellent early survival in this group of mostly good prognosis patients. Relapses were still seen; longer follow-up is needed.

Rituximab Fails to Reduce Histologic Transformation (HT) Rate of Follicular Lymphoma (FL) to Diffuse Large B-Cell Lymphoma (DLBCL)

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 837-837 ◽  
Author(s):  
Ariel E Marciscano ◽  
Neel Gupta ◽  
Zhigang Zhang ◽  
Julie Teruya-Feldstein ◽  
Ariela Noy
Keyword(s):  
Follicular Lymphoma ◽  
Lower Risk ◽  
Cell Lymphoma ◽  
Single Agent ◽  
B Cell Lymphoma ◽  
P Value ◽  
First Line ◽  
First Line Therapy ◽  
Large B Cell Lymphoma

Abstract Background: Histologic Transformation (HT) of indolent follicular lymphoma to aggressive lymphoma is a critical and sometimes fatal event in a patient’s disease course. It is unclear if rituximab influences HT. We have previously shown that single agent rituximab is used earlier in the disease course than traditional chemotherapy likely due to rituximab’s high therapeutic index (Cohler et al., ASH 2007). Others have shown rituximab also improves the complete response rate, disease free and overall survival of follicular lymphoma when used as a single agent and in combination with chemotherapy. Theoretically, this could reduce the disease burden over a patient’s lifetime and consequently the transformation rate. Methods: We retrospectively screened 3500 patients and identified 584 eligible patients at Memorial Sloan Kettering Cancer Center (MSKCC) with newly diagnosed, treatment naïve, indolent follicular lymphoma. We compared two cohorts of rituximab usage: 1998– 2000 and 2001–2006. In the former, patients received rituximab predominantly in the relapsed setting. In the latter, patients liberally received rituximab even as single agent first line therapy. Histologic transformation to diffuse large B cell lymphoma (DLBCL) was the primary study endpoint. All therapy was recorded. Results: Median follow-up time was 92 months for the 1998–2000 cohort and 41 months for the 2001–2006 cohort. Patients in the latter cohort received rituximab both earlier in the course of follow up and more often as a first line therapy. The median time from diagnosis to first rituximab was 21 months vs. 2 months, respectively. Rituximab was given alone or in combination as first line systemic therapy to 36% of the 1998–2000 cohort, but to 93% of the 2001–2006 cohort. The comparative risks of transformation between the two cohorts were not statistically significant (P-value = 0.41 by log rank comparison). The cumulative incidence of transformation 36 months after diagnosis was 8.1% for the 1998– 2000 cohort and 4.4% for the 2001–2006 cohort. Furthermore, patients receiving rituximab first line, either single agent or in combination, compared to patients receiving rituximab as salvage therapy, showed essentially no difference in risk of histologic transformation. (P-value = 0.68) Surprisingly, patients never receiving rituximab had a significantly lower risk of transformation than those who received rituximab at any point (p-value = 0.0095), however, these rituximab naïve patients had lower risk FLIPI scores accounting for the difference (p-value = 0.15). Notably, 173/584 patients never received systemic therapy, and 102 of these were expectantly monitored without any local therapy, such as radiotherapy or therapeutic surgery). None of these 102 patients had transformation within the first 36-months of follow up. Finally, we confirm Ginè et al.’s earlier finding that a higher risk FLIPI score confers a higher risk of transformation. (Annals of Oncology, 2006) For each unit increase of FLIPI risk score (e.g., 3 à 4), the probability of histologic transformation at any time point increases 1.72 fold. Moreover, high-risk FLIPI patients (3–5 risk factors) have a 3.3-fold increase in risk of HT (p-value <0.0001). Conclusions: Patients diagnosed with FL in 2001–2006 received rituximab earlier in their disease and more frequently than those diagnosed in 1998–2000. However, in contrast to our hypothesis, this did not translate to a lower risk of transformation for the 2001– 2006 cohort. The 36-month risk of transformation was lower in patients with lower FLIPI scores. This data supports the clinical decision to expectantly monitor low-risk FLIPI patients.

The VcR-CVAD Regimen Produces a High Complete Response Rate in Untreated Mantle Cell Lymphoma (MCL): First Analysis of E1405 – A Phase II Study of VcR-CVAD with Maintenance Rituximab for MCL.

Blood ◽  
2009 ◽  
Vol 114 (22) ◽  
pp. 1661-1661 ◽  
Author(s):  
Brad S Kahl ◽  
Hailun Li ◽  
Mitchell R Smith ◽  
Randy D. Gascoyne ◽  
Elisabeth Paietta ◽  
...  
Keyword(s):  
Phase Ii ◽  
Research Funding ◽  
Response Rate ◽  
Complete Response Rate ◽  
Phase Ii Study ◽  
Cell Lymphoma ◽  
Complete Response ◽  
Mantle Cell ◽  
Grade 3

Abstract Abstract 1661 Poster Board I-687 Introduction One approach to improving outcomes in Mantle Cell Lymphoma (MCL) is to incorporate newer targeted agents into standard chemotherapy regimens. As the proteasome inhibitor bortezomib (Velcade‘) achieved a 33% response rate in relapsed MCL, we hypothesized that the incorporation of Velcade (Vc) into a modified R-hyperCVAD chemotherapy backbone would result in a high complete response rate (CR). The new regimen, VcR-CVAD, was tested for safety and efficacy in a phase II study within the Wisconsin Oncology Network (UW) and demonstrated a CR rate of 77% (Kahl, ASH 2008). To determine the safety and efficacy of this regimen in a cooperative group setting, we initiated E1405: a phase II study of VcR-CVAD with maintenance rituximab (MR) for untreated MCL. Methods Eligible patients had histologically confirmed, previously untreated MCL, PS 0-2, and adequate end organ function. The treatment plan included: Velcade 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 X 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 had an option to receive high dose chemotherapy and autologous stem cell transplantation (off protocol) rather than MR. The primary endpoint of the trial was the CR rate, incorporating PET imaging, to VcR-CVAD induction therapy. Results Seventy-six eligible patients were enrolled between 5/07 and 10/08. Baseline characteristics include median age 62 (40-76), 59M:17F, 91% stage III/IV, and 39% with elevated LDH. Sixty-four patients (84%) completed VcR-CVAD induction therapy. Reasons for treatment discontinuation included PD (1), toxicity (4), patient preference (2), and other/unknown (5). Response information is available on 74 patients while data is outstanding on 2 patients. The ORR was 96% (73/76; 95% CI, 89%-99%), CR rate 75% (57/76; 95% CI, 64%-84%) and the PR rate 21% (16/76; 95% CI, 13%-32%). Six of the PR patients were coded as such because of protocol violations in which a post-treatment bone marrow biopsy or PET scan was not obtained. The CR rate in the 68 completely restaged patients was 84%. Forty-four patients proceeded to planned MR while 21 patients went off protocol to SCT consolidation. Median follow up is currently too short (9 months) to assess PFS and OS. The major toxicity of the treatment regimen was expected myelosuppression. Grade 3-4 non hematologic toxicities were rare. No patients developed grade 3-4 neuropathy. There were no treatment related deaths. Conclusion The VcR-CVAD induction produced high overall response (96%) and CR rate (75%) in a representative MCL patient population treated on a cooperative group protocol. The CR rate was high and comparable to the UW pilot study (77%). No episodes of severe painful peripheral neuropathy were reported using the reduced vincristine dosage and the overall toxicity profile was very acceptable. Longer follow up is needed to determine if the high CR rate will translate into improved PFS and OS. Disclosures Kahl: Genentech: Consultancy, Research Funding; Millennium: Consultancy, Research Funding. Off Label Use: Bortezomib as front line treatment in MCL. Smith:Genentech: Research Funding; Millennium: Research Funding. Advani:Seattle Genetics, Inc.: Research Funding. Horning:Genentech: Honoraria, Research Funding.

Sign in / Sign up

Export Citation Format

Share Document