Manfred Welslau

Bendamustine plus rituximab versus CHOP plus rituximab as first-line treatment for patients with indolent and mantle-cell lymphomas: an open-label, multicentre, randomised, phase 3 non-inferiority trial

BACKGROUND Rituximab plus chemotherapy, most often CHOP (cyclophosphamide, doxorubicin, vincristine, and prednisone), is the first-line standard of care for patients with advanced indolent lymphoma, and for elderly patients with mantle-cell lymphoma. Bendamustine plus rituximab is effective for relapsed or refractory disease. We compared bendamustine plus rituximab with CHOP plus rituximab (R-CHOP) as first-line treatment for patients with indolent and mantle-cell lymphomas. METHODS We did a prospective, multicentre, randomised, open-label, non-inferiority trial at 81 centres in Germany between Sept 1, 2003, and Aug 31, 2008. Patients aged 18 years or older with a WHO performance status of 2 or less were eligible if they had newly diagnosed stage III or IV indolent or mantle-cell lymphoma. Patients were stratified by histological lymphoma subtype, then randomly assigned according to a prespecified randomisation list to receive either intravenous bendamustine (90 mg/m(2) on days 1 and 2 of a 4-week cycle) or CHOP (cycles every 3 weeks of cyclophosphamide 750 mg/m(2), doxorubicin 50 mg/m(2), and vincristine 1.4 mg/m(2) on day 1, and prednisone 100 mg/day for 5 days) for a maximum of six cycles. Patients in both groups received rituximab 375 mg/m(2) on day 1 of each cycle. Patients and treating physicians were not masked to treatment allocation. The primary endpoint was progression-free survival, with a non-inferiority margin of 10%. Analysis was per protocol. This study is registered with ClinicalTrials.gov, number NCT00991211, and the Federal Institute for Drugs and Medical Devices of Germany, BfArM 4021335. FINDINGS 274 patients were assigned to bendamustine plus rituximab (261 assessed) and 275 to R-CHOP (253 assessed). At median follow-up of 45 months (IQR 25-57), median progression-free survival was significantly longer in the bendamustine plus rituximab group than in the R-CHOP group (69.5 months [26.1 to not yet reached] vs 31.2 months [15.2-65.7]; hazard ratio 0.58, 95% CI 0.44-0.74; p<0.0001). Bendamustine plus rituximab was better tolerated than R-CHOP, with lower rates of alopecia (0 patients vs 245 (100%) of 245 patients who recieved ≥3 cycles; p<0.0001), haematological toxicity (77 [30%] vs 173 [68%]; p<0.0001), infections (96 [37%] vs 127 [50%]); p=0.0025), peripheral neuropathy (18 [7%] vs 73 [29%]; p<0.0001), and stomatitis (16 [6%] vs 47 [19%]; p<0.0001). Erythematous skin reactions were more common in patients in the bendamustine plus rituximab group than in those in the R-CHOP group (42 [16%] vs 23 [9%]; p=0.024). INTERPRETATION In patients with previously untreated indolent lymphoma, bendamustine plus rituximab can be considered as a preferred first-line treatment approach to R-CHOP because of increased progression-free survival and fewer toxic effects. FUNDING Roche Pharma AG, Ribosepharm/Mundipharma GmbH.

Bendamustine Plus Rituximab Is Effective and Has a Favorable Toxicity Profile in the Treatment of Mantle Cell and Low-Grade Non-Hodgkin's Lymphoma

PURPOSE The aim of this multicenter-study was to evaluate the progression-free survival, response rate and toxicity of the combination of bendamustine and rituximab (BR) in patients with mantle cell or low-grade lymphomas in first to third relapse or refractory to previous treatment. PATIENTS AND METHODS A total of 245 courses (median, four courses per patient) were administered to 63 patients. Bendamustine was given at a dose of 90 mg/m2 as a 30-minute infusion on days 1 and 2, combined with 375 mg/m2 rituximab on day 1, for a maximum of four cycles every 4 weeks. Histologies were 24 follicular, 16 mantle cell, 17 lymphoplasmacytoid, and six marginal zone lymphoma. RESULTS Fifty-seven of 63 patients responded to BR, corresponding to an overall response rate of 90% (95% CI, 80% to 96%) with a complete remission rate (CR) of 60% (95% CI, 47% to 72%). The median time of progression-free survival was 24 months (range, 5 to 44+ months), and the median duration of overall survival has not yet been reached. In mantle cell lymphomas, BR showed a considerable activity, achieving a response rate of 75% (95% CI, 48% to 93%) with a CR rate of 50%. Myelosuppression was the major toxicity, with 16% grade 3 and 4 leukocytopenia. Thrombocytopenia was rare, with only 3% grade 3 and 4. CONCLUSION These results demonstrate that the BR combination is a highly active regimen in the treatment of low-grade lymphomas and mantle cell lymphomas.

Bendamustine plus rituximab (B-R) versus CHOP plus rituximab (CHOP-R) as first-line treatment in patients with indolent and mantle cell lymphomas (MCL): Updated results from the StiL NHL1 study.

3 Background: This multicenter, randomized, phase III study compared B-R and CHOP-R as first-line treatment in indolent lymphoma and MCL and was presented at ASH 2009 including a comprehensive safety analysis. Here we present an updated analysis with a cut-off date for 31 Oct 2011. METHODS 549 patients (pts) with indolent or MCL were randomized to receive B-R or CHOP-R for a max of 6 cycles. The primary endpoint was PFS. RESULTS 514 pts randomized pts were evaluable (261 B-R; 253 CHOP-R). Patient characteristics were well balanced between arms; median age was 64 years. At a median follow-up of 45 months, PFS was significantly prolonged with B-R compared with CHOP-R (HR 0.58, 95% CI 0.44-0.74; P<0.001). Median PFS was 69.5 versus 31.2 months, respectively. The PFS benefit with B-R was maintained in all histological subtypes except marginal zone lymphoma. The PFS benefit with B-R was independent of age; HR 0.52 (P=0.002) in pts ≤60 years (n=199), and HR 0.62 (P=0.002) in pts >60 years (n=315). In pts with normal LDH (62%), PFS was significantly prolonged with B-R compared with CHOP-R (P<0.001), while in the elevated LDH group (38%) PFS was numerically, but not significantly increased with B-R compared with CHOP-R (P=0.118). In patients with follicular lymphoma, FLIPI subgroups defined by 0-2 factors (favorable) and 3-5 factors (unfavorable) had a longer PFS with B-R than with CHOP-R (P=0.043 and P=0.068 for the favorable and unfavorable FLIPI subgroups, respectively). Seventy four salvage treatments had been initiated in the B-R group; compared with 116 in the CHOP-R group, of those in the CHOP-R group 52 pts received B-R as salvage regimen. Overall survival did not differ between the treatment arms, with 43 and 45 deaths in the B-R and CHOP-R arms, respectively. Twenty secondary malignancies were observed in the B-R group compared with 23 in the CHOP-R group, with 1 hematological malignancy in each group (1 MDS in B-R, 1 AML in CHOP-R). CONCLUSIONS In patients with previously untreated indolent lymphoma, and elderly patients with MCL, B-R demonstrates a PFS benefit and improved tolerability compared with CHOP-R.

Bendamustine plus rituximab versus fludarabine plus rituximab for patients with relapsed indolent and mantle-cell lymphomas: a multicentre, randomised, open-label, non-inferiority phase 3 trial

BACKGROUND Fludarabine-based chemoimmunotherapy with rituximab is frequently used in patients with indolent and mantle-cell lymphomas who relapse after alkylating chemotherapy. We aimed to compare the efficacy and safety of rituximab with bendamustine or fludarabine in patients with relapsed, indolent, non-Hodgkin lymphoma and mantle-cell lymphoma. METHODS For this randomised, non-inferiority, open-label, phase 3 trial, we recruited patients from 55 centres in Germany, who were subsequently randomised centrally according to prespecified randomisation lists with permuted blocks of randomly variable block size to rituximab (375 mg/m(2), day 1) plus either bendamustine (90 mg/m(2), days 1 and 2) or fludarabine (25 mg/m(2), days 1-3) every 28 days for a maximum of six 28-day cycles. Patients were aged 18 years or older with a WHO performance status of 0-2 and had relapsed or refractory indolent or mantle-cell lymphoma; patients refractory to regimens that included rituximab, bendamustine, or purine analogue drugs were excluded. Patients were stratified by histological subtypes of lymphoma and by their latest previous therapies. Treatment allocation was not masked. The primary endpoint was progression-free survival and the final analysis was completed per protocol. Non-inferiority of bendamustine plus rituximab versus fludarabine plus rituximab was defined as a difference of less than 15% in 1-year progression-free survival. The protocol was amended in July, 2006, after approval of rituximab maintenance (375 mg/m(2) every 3 months for up to 2 years), which was then given to patients achieving a response to either trial treatment. This study is registered with ClinicalTrials.gov, number NCT01456351 (closed to enrolment, follow-up is ongoing). FINDINGS Between Oct 8, 2003, and Aug 5, 2010, we randomly assigned 230 patients to treatment groups (116 bendamustine plus rituximab, 114 fludarabine plus rituximab). 11 patients were excluded for protocol violations and were not followed up further (two in the bendamustine plus rituximab group and nine in the fludarabine plus rituximab group). Thus, 219 patients were included in the per-protocol analysis (114 bendamustine plus rituximab, 105 fludarabine plus rituximab). 1-year progression-free survival with bendamustine plus rituximab was 0·76 (95% CI 0·68-0·84) and 0·48 (0·39-0·58) with fludarabine plus rituximab (non-inferiority p<0·0001). At a median follow-up of 96 months (IQR 73·2-112·9), median progression-free survival with bendamustine plus rituximab was 34·2 months (95% CI 23·5-52·7) and 11·7 months (8·0-16·1) with fludarabine plus rituximab (hazard ratio [HR] 0·54 [95% CI 0·38-0·72], log-rank test p<0·0001). Safety outcomes were similar in both groups, with 46 serious adverse events recorded (23 in the bendamustine plus rituximab group and 23 in the fludarabine plus rituximab group), most commonly myelosuppression and infections. INTERPRETATION In combination with rituximab, bendamustine was more effective than fludarabine, suggesting that bendamustine plus rituximab may be the preferred treatment option for patients with relapsed indolent and mantle-cell lymphomas. FUNDING Roche Pharma AG, Ribosepharm GmbH, Mundipharma GmbH, Studiengruppe indolente Lymphome (StiL).

Trastuzumab in advanced breast cancer – a decade of experience in Germany

BackgroundTrastuzumab was registered in 2000 for the treatment of metastatic breast cancer, both as monotherapy and combination therapy with paclitaxel. In this prospective, non-interventional observation study, the 10-year experience with trastuzumab in the routine management of HER2-positive breast cancer was reviewed.MethodsBetween 2000 and 2010, 1843 evaluable patients with advanced HER2-positive breast cancer were recruited in 223 institutions across Germany. Patients were prospectively monitored for about one year. Additional information on long-term outcomes, progression-free survival (PFS), and overall survival (OS) were retrieved at several follow-up points. There were no restrictions with respect to diagnostic or therapeutic procedures. Patients were stratified into three cohorts depending on the treatment regimen, i.e. trastuzumab monotherapy (n =228, 12%), trastuzumab combined with chemotherapy (n =1346, 73%), or trastuzumab combined with endocrine therapy (n =269, 15%).ResultsMedian age was 59.5 years with a proportion of 28% being older than 65 years. Over a maximum follow-up period of more than 10 years, 1538 PFS events were documented in 83% of patients, resulting in an estimated median PFS of 11.8 months. Median OS, based on recorded death in 64% of patients, amounted to 34.4 months, with 48% (95% confidence intervals 45 – 50%) still alive after three years. The subgroup selected for a treatment combination with endocrine drugs only had distinctly longer PFS and OS than the other two groups, achieving medians of 23.3 months and 56.3 months, respectively. Median PFS and OS in elderly patients over 65 years of age was 11.4 months and 28.3 months, respectively. Adverse reactions, including cardiac toxicity, of severity grade 3 or 4 were rare.ConclusionsThe superior outcome of treatment strategies including trastuzumab in HER2 overexpressing breast cancer, proven in pivotal studies, was confirmed in the management of advanced breast cancer in Germany in the routine setting. Our data suggest a comparable clinical benefit of treatment with trastuzumab in elderly patients (>65 years), who are typically under-represented in randomized clinical studies.

Prognostic value of circulating Bcl-2/IgH levels in patients with follicular lymphoma receiving first-line immunochemotherapy.

Bcl-2/IgH rearrangements can be quantified in follicular lymphoma (FL) from peripheral blood (PB) by polymerase chain reaction (PCR). The prognostic value of Bcl-2/IgH levels in FL remains controversial. We therefore prospectively studied PB Bcl-2/IgH levels from 173 first-line FL patients who were consecutively enrolled, randomized, and treated within the multicenter phase 3 clinical trial NHL1-2003 comparing bendamustine-rituximab (B-R) with rituximab, cyclophosphamide, doxorubicin, vincristine, prednisone. From April 2005 to August 2008, 783 pre- and posttreatment PB samples were quantified by quantitative PCR. At inclusion, 114 patients (66%) tested positive and 59 (34%) were negative for Bcl-2/IgH. High pretreatment Bcl-2/IgH levels had an adverse effect on progression-free survival (PFS) compared with intermediate or low levels (high vs intermediate: hazard [HR], 4.28; 95% confidence interval [CI], 1.70-10.77; P = .002; high vs low: HR, 3.02; 95% CI, 1.55-5.86; P = .001). No PFS difference between treatment arms was observed in Bcl-2/IgH-positive patients. A positive posttreatment Bcl-2/IgH status was associated with shorter PFS (8.7 months vs not reached; HR, 3.15; 95% CI, 1.51-6.58; P = .002). By multivariate analysis, the pretreatment Bcl-2/IgH level was the strongest predictor for PFS. Our data suggest that pre- and posttreatment Bcl-2/IgH levels from PB have significant prognostic value for PFS in FL patients receiving first-line immunochemotherapy. This trial was registered at www.clinicaltrials.gov as #NCT00991211 and at the German Federal Institute for Drugs and Medical Devices as #BfArM-4021335.