Melphalan 200 Mg/m2 (Mel200) Versus Melphalan 100 Mg/m2 (Mel100) in Newly Diagnosed Myeloma Patients: A Prospective, Randomized Phase III Study

Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 3316-3316 ◽  
Author(s):  
Mario Boccadoro ◽  
Sara Bringhen ◽  
Maria Teresa Petrucci ◽  
Antonietta Falcone ◽  
Anna Marina Liberati ◽  
...  

Abstract Background. Several trials have shown the superiority of high-dose melphalan (usually 200 mg/m2, MEL200) versus standard therapy in myeloma patients. Intermediate-dose melphalan (100 mg/m2, MEL100) was also superior to the standard dose, but MEL100 has not been clinically compared with MEL200 in a randomized study. In this prospective, randomized, phase III trial, we compared the efficacy and toxicity of MEL200 and MEL100. Aims. The primary end points were complete remission (CR) rate, event-free survival (EFS) and incidence of gastrointestinal toxicity, infections and treatment-related mortality (TRM). Methods. Inclusion criteria were previously untreated myeloma, aged ≤ 65 and Durie and Salmon stage II or III. Exclusion criteria were abnormal pulmonar, cardiac, liver and renal function, HBV, HCV, or HIV positivity, concomitant cancer or psychiatric disease. The institutional review board approved the protocol and written informed consent was obtained from all patients. All patients received 2 cycles of 28-day-dexamethasone- doxorubicin-vincristine (doxorubicin 50 mg/m2 day 1, vincristine 1 mg day 1, dexamethasone 40 mg days 1–4) and 2 cycles of cyclophosphamide (4 g/m2, day 1) followed by stem cell harvest. MEL200 patients was conditioned with 2 cycles of melphalan 200 mg/m2 and MEL100 patients with 2 courses of melphalan 100 mg/m2. All MEL courses were followed by stem cell reinfusion. Results. Two-hundred and ninety-eight patients (median age 57) were randomly assigned either to MEL200 (149 patients) or to MEL100 (149 patients). All patients were evaluated for response, EFS and OS in intention-to-treat analysis. Patient characteristics were similar in both groups with the exception of chromosomal 13 deletion, present in 69% of MEL200 and 45% of MEL100 patients (p=0.02). Ninety-six patients completed tandem MEL200; 103 tandem MEL100. The very good partial response rate was higher in MEL200 group (37% versus 21%, p=0.003), but CR was 15% in the MEL200 group and 8% in the MEL100 group (p=0.07). The median follow-up for censored patients was 40.5 months. The 4-years EFS was 44.5% in the MEL200 and 18.3% in the MEL100 group (HR=0.71, 95% CI 0.53–0.95, p=0.02). The 5-years overall survival (OS) was 59.2% in the MEL200 and 44.7% in the MEL100 group (HR=0.78, 95% CI 0.52–1.16, p=0.22). Duration of grade 4 neutropenia and thrombocytopenia was comparable, but a higher proportion of MEL200 patients required platelet transfusions (p=0.002). Grade 3–4 non-hematologic adverse events were reported in 38% of MEL200 patients and in 19% of MEL100 patients (p<0.0001). The incidence of grade 3–4 mucositis was 16% after MEL200 and 3% after MEL100 (p<0.0001). The incidence of severe gastrointestinal toxicity was 19% after MEL200 and 2% after MEL100 (p<0.0001). The incidence of grade 3–4 infections and of TRM was similar in both groups. Conclusions. In conclusion, MEL200 resulted in a significantly higher very good partial response rate. This translated in a superior EFS, but not OS. Mel200 was associated with less gastrointestinal toxicity, including mucositis.

Blood ◽  
2007 ◽  
Vol 110 (11) ◽  
pp. 727-727
Author(s):  
Antonio Palumbo ◽  
Sara Bringhen ◽  
Maria Teresa Petrucci ◽  
Antonietta Falcone ◽  
Anna Marina Liberati ◽  
...  

Abstract Several trials have shown the superior impact of high-dose melphalan (usually 200 mg/m2, MEL200) versus standard therapy in myeloma patients. Intermediate-dose melphalan (100 mg/m2, MEL100) was also superior to the standard dose, but MEL100 has not been clinically compared with MEL200 in a randomized study. In this prospective, randomized, phase III trial, we compared the efficacy and toxicity of MEL200 and MEL100. The primary end points were complete remission (CR) rate, event-free survival (EFS) and incidence of gastrointestinal toxicity, infections and treatment-related mortality (TRM). Inclusion criteria were previously untreated myeloma, aged ≤ 65 and Durie and Salmon stage II or III. Exclusion criteria were abnormal pulmonar, cardiac, liver and renal function, HBV, HCV, or HIV positivity, concomitant cancer or psychiatric disease. The institutional review board approved the protocol and written informed consent was obtained from all patients. All patients received 2 cycles of 28-day-dexamethasone-doxorubicin-vincristine (doxorubicin 50 mg/m2 day 1, vincristine 1 mg day 1, dexamethasone 40 mg days 1–4) and 2 cycles of cyclophosphamide (4 g/m2, day 1) followed by stem cell harvest. MEL200 patients was conditioned with 2 cycles of melphalan 200 mg/m2 and MEL100 patients with 2 courses of melphalan 100 mg/m2, both followed by stem cell reinfusion. Two-hundred and ninety-eight patients (median age 57) were randomized, 149 to MEL200 and 149 to MEL100. All patients were evaluated for response, EFS and OS. Patient characteristics were similar in both groups. Chromosomal 13 was deleted in 69% of MEL200 and 45% of MEL100 patients (p=0.015). Ninety-six patients completed tandem MEL200; 103 tandem MEL100. In intention-to-treat analysis, the very good partial response rate was higher in MEL200 group (37% versus 21%, p=0.003), but CR was 15% in the MEL200 group and 8% in the MEL100 group (p=0.07). After a median follow-up of 30.5 months, the 3-years EFS was 46% in the MEL200 and 26% in the MEL100 group (HR=0.7, 95% CI 0.51–0.97, p=0.03). The 3-years overall survival (OS) was 81% in the MEL200 and 73% in the MEL100 group (HR=0.69, 95% CI 0.42–1.13, p=0.14). Duration of grade 4 neutropenia and thrombocytopenia was comparable, but a higher proportion of MEL200 patients required platelet transfusions (p=0.002). Grade 3–4 non-hematologic adverse events were more frequent in the MEL200 patients (38% versus 19%, p<0.0001). The incidence of grade 3–4 mucositis was 16% after MEL200 and 3% after MEL100 (p<0.0001). The incidence of severe gastrointestinal toxicity was 19% after MEL200 and 2% after MEL100 (p<0.0001). The incidence of grade 3–4 infections and of TRM was similar in both groups. In conclusion, MEL200 resulted in a significantly higher very good partial response rate. This translated in a superior EFS, but not OS.


Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 55-55 ◽  
Author(s):  
Antonio Palumbo ◽  
Sara Bringhen ◽  
Maria Teresa Petrucci ◽  
Antonietta Falcone ◽  
Anna Marina Liberati ◽  
...  

Abstract Several trials have shown the superior impact of high-dose melphalan (usually 200 mg/m2, MEL200) versus standard therapy in myeloma patients. Intermediate-dose melphalan (100 mg/m2, MEL100) was also superior to the standard dose, but MEL100 has not been clinically compared with MEL200 in a randomized study. In a case-matched study, response rate and event-free survival of MEL200 were superior to MEL100, but overall survival (OS) was similar. In this prospective, randomized, phase III trial, we compared the efficacy and toxicity of MEL200 and MEL100. Between January 2002 and July 2006, 299 patients were enrolled. Inclusion criteria were previously untreated myeloma, aged < 65 and Durie and Salmon stage II or III. Exclusion criteria were abnormal cardiac function, respiratory disease, abnormal liver function, abnormal renal function, HBV, HCV, or HIV positivity, concomitant cancer or psychiatric disease. The institutional review board approved the protocol and written informed consent was obtained from all patients. All patients received: 2 dexamethasone-doxorubicin-vincristine debulking courses (doxorubicin 50 mg/m2 day 1, vincristine 1 mg day 1, dexamethasone 40 mg days 1, 2, 3, 4, each course repeated every 28 days), 2 cycles of cyclophosphamide (4 g/m2, day 1) plus G-CSF followed by stem cell harvest. The MEL200 group was conditioned with 2 cycles of melphalan 200 mg/m2 followed by stem cell reinfusion; the MEL100 group was conditioned with 2 courses of melphalan 100 mg/m2 followed by stem cell reinfusion. At the present, 246 patients, median age 57 (range 32–65), completed the assigned therapy and were evaluated for response, progression-free survival (PFS) and OS. One-hundred and twenty-four patients were randomized to MEL200 and 122 to MEL100. Patient characteristics were similar in both groups. Abnormal cytogenetics (13q deletion, t(4;14), t(11;14), p53) were 75% in MEL200 patients and 56% in MEL100 patients (p=0.05). Forty-six patients did not complete tandem MEL200; 36 patients did not complete tandem MEL100. The near complete response rate of MEL200 was superior to MEL100 (32% versus 18%, p=0.011), but partial response was 80% versus 71%, respectively (p=0.079). The median follow-up for censored patients was 26.5 months. The 3 years PFS was 51% in the MEL200 arm and 33% in the MEL100 arm (HR=0.81, 95% CI 0.55–1.21, p=0.31). The 3 years OS was 86% in the MEL200 group and 71% in the MEL100 group (HR=0.82, 95 CI 0.45–1.48, p=0.51). Duration of grade 4 neutropenia and thrombocytopenia was comparable in two arms, but MEL200 patients required more platelet transfusions (p=0.03). Grade 3–4 non-hematological adverse events were reported in 49% of the MEL200 patients and in 38% of the MEL100 patients (P=0.07). The most frequent grade 3–4 adverse events were infections (54% of MEL200 patients versus 45% of MEL100 patients, p=0.25), mucositis (31% of MEL200 patients versus 7% of MEL100 patients, p=0.002) and gastrointestinal toxicities (20% of MEL200 patients versus 14% of MEL100 patients, p=0.3). In conclusion, MEL200 resulted in a significantly higher near complete response rate but this did not translate in a superior PFS and OS.


Blood ◽  
2005 ◽  
Vol 106 (11) ◽  
pp. 2546-2546 ◽  
Author(s):  
Angela Dispenzieri ◽  
Emily Blood ◽  
David Vesole ◽  
Rafael Fonseca ◽  
Natalie Callander ◽  
...  

Abstract Background: Multiple myeloma (MM) is an incurable disease with a anticipated overall survival (OS) ranging from months to decades. Modest improvements in OS have been made with high-dose chemotherapy with peripheral blood stem cell transplant (PBSCT), but to date prognostic factors have a greater impact on OS than do individual therapies. Patients with adverse risk factors such as elevated beta-2 microglobulin (B2M), plasma cell labeling index, deletions of the long arm of chromosome 13 by metaphase cytogenetics (del 13q) require innovative new treatment strategies. Bortezomib has significant activity in patients with both newly diagnosed and relapsed/refractory MM, but its specific role in patients with adverse features has not yet been defined. Methods: Patients with newly diagnosed “high-risk” myeloma (B2M ≥ 5.5., PCLI ≥ 1, or del 13q) and adequate organ and functional status were eligible. Patients were treated with bortezomib 1.3 mg/m2 day 1, 4, 8, and 11 every 21 days for 8 cycles as induction. After induction, patients were scheduled to receive bortezomib 1.3 mg/m2 every other week indefinitely. Elective peripheral stem cell mobilization (growth factor alone) was allowed after 4 cycles of bortezomib. Patients relapsing on maintenance schedule were to have the full induction schedule resumed. Responses were by the EBMT criteria but a very good partial response category was included. The primary end-point was the response rate in these high-risk patients (90% power to detect a response rate of 50% or higher). The study decision rule requires that 16 or more responses, among 39 eligible patients, are seen in order to declare this treatment effective. Results: Between March 15, 2004 and March 10, 2005, 44 patients enrolled on study. Among the 43 eligible patients, median age was 63; 51% were male. All patients had high risk disease: del 13q (6/41); plasma cell labeling index ≥1% (16/34); and B2M≥5.5 (34/43). Preliminary response data are available for 18 of the 44 cases enrolled, of which 7 had partial response, 1 had minimal response, 1 had no response, 2 had progressive disease, and 5 were unevaluable. Among those patients completing induction therapy and with response information, the median number of cycles of therapy administered is 5, range (0,8). The most common non-hematologic adverse events (AEs) of grade 3 or higher included hyponatremia (9 patients) and diarrhea (6 patients). Mild sensory peripheral neuropathy was common: grade 1, 16 patients; grade 2, 2 patients. Only 1 patient had grade 3 peripheral neuropathy. One patient died after receiving 2 doses bortezomib due to heart block and asystole. Two patients had a grade 4, 25 patients had grade 3, and 13 had grade 1 or 2 as the worst grade non-hematologic adverse event. Based on data received by August 1, 2005, 18 patients have gone off study: AEs (2); death (1); progressive disease (9); and other reasons (6). Updated results on the full study population along with FISH data for IgH translocations and deletions of 13q and 17p will be presented at the meeting. Conclusions: Preliminary results suggest that upfront bortezomib has activity in patients with high-risk MM, but further follow-up is required.


2006 ◽  
Vol 24 (18_suppl) ◽  
pp. 7521-7521 ◽  
Author(s):  
D. M. Weber ◽  
C. Chen ◽  
R. Niesvizky ◽  
M. Wang ◽  
A. Belch ◽  
...  

7521 Background: Lenalidomide is a novel, orally administered, immunomodulatory drug (IMiD) that has single-agent activity against MM and additive effects when combined with dexamethasone (Dex). Methods: In this phase 3, multicenter, double-blind trial, 354 patients (pts)with relapsed or refractory MM were treated with Dex 40 mg daily on days 1–4, 9–12, 17–20 every 28 days and were randomized to receive either lenalidomide (Len) 25 mg daily orally on days 1–21 every 28 days or placebo. Beginning with cycle 5, Dex was reduced to 40 mg daily on days 1–4 only, every 28 days. Patients were stratified with respect to B2M (≤ 2.5 vs. > 2.5 mg/mL), prior stem cell transplant (none vs. ≥ 1), and number of prior regimens (1 vs > 1). The treatment arms were well balanced for prognostic features. Results: The overall response rate was greater with Len-Dex than with Dex-placebo (59.4% vs. 21.1%; p < 0.001). Complete responses were achieved in 12.9% of pts treated with Len-Dex and 0.6% of pts treated with Dex-placebo. The median time to progression (TTP) for pts treated with Len-Dex was 11.1 months compared to 4.7 months for pts treated with Dex-placebo (p < 0.000001). Median overall survival was higher with Len-Dex (not reached) compared to Dex-placebo (24 months) (hazard ratio 1.76, p = .0125). Grade 3–4 neutropenia was more frequent with combination therapy than with Dex-placebo (24% vs. 3.5%), however ≥ grade 3 infections were similar in both groups. Thromboembolic events occurred in 15% of pts treated with Len-Dex and in 3.5% of pts treated with Dex-placebo. Atrial fibrillation occurred in 8 pts and CHF developed in 4 pts treated with Len-Dex. Conclusions: Considering the ease of oral administration, higher response rate, longer time to progression and overall survival benefit, the combination of lenalidomide-dexamethasone may very well represent the treatment of choice for early refractory or relapsing multiple myeloma. The relatively infrequent side effects should not detract from these improvements, but the use of prophylactic antithrombotic therapy should be considered for patients treated with the combination of lenalidomide and dexamethasone. [Table: see text]


2009 ◽  
Vol 27 (34) ◽  
pp. 5720-5726 ◽  
Author(s):  
Jean-Luc Harousseau ◽  
Herve Avet-Loiseau ◽  
Michel Attal ◽  
Catherine Charbonnel ◽  
Frederic Garban ◽  
...  

Purpose The prognostic impact of complete response (CR) achievement in multiple myeloma (MM) has been shown mostly in the context of autologous stem-cell transplantation. Other levels of response have been defined because, even with high-dose therapy, CR is a relatively rare event. The purpose of this study was to analyze the prognostic impact of very good partial response (VGPR) in patients treated with high-dose therapy. Patients and Methods All patients were included in the Intergroupe Francophone du Myelome 99-02 and 99-04 trials and treated with vincristine, doxorubicin, and dexamethasone (VAD) induction therapy followed by double autologous stem-cell transplantation (ASCT). Best post-ASCT response assessment was available for 802 patients. Results With a median follow-up of 67 months, median event-free survival (EFS) and 5-year EFS were 42 months and 34%, respectively, for 405 patients who achieved at least VGPR after ASCT versus 32 months and 26% in 288 patients who achieved only partial remission (P = .005). Five-year overall survival (OS) was significantly superior in patients achieving at least VGPR (74% v 61% P = .0017). In multivariate analysis, achievement of less than VGPR was an independent factor predicting shorter EFS and OS. Response to VAD had no impact on EFS and OS. The impact of VGPR achievement on EFS and OS was significant in patients with International Staging System stages 2 to 3 and for patients with poor-risk cytogenetics t(4;14) or del(17p). Conclusion In the context of ASCT, achievement of at least VGPR is a simple prognostic factor that has importance in intermediate and high-risk MM and can be informative in more patients than CR.


Blood ◽  
2006 ◽  
Vol 108 (11) ◽  
pp. 3093-3093 ◽  
Author(s):  
Andrzej J. Jakubowiak ◽  
Ammar Al-Zoubi ◽  
Tara Kendall ◽  
Judah Friedman ◽  
Asra Ahmed ◽  
...  

Abstract Initial therapy with novel combinations including bortezomib, lenalidomide or thalidomide show a superior overall response rate (80–90% range) and high CR/nCR rate (20–30% range). Although a number of studies demonstrated that achieving CR/nCR after ASCT prolongs survival, it is not clear whether improved quality of response after initial cytoreduction impacts on overall outcome of treatment of myeloma. Recently, we completed accrual to a phase II trial of initial therapy with VDD for patients with active myeloma. The primary objective was to determine the rate of CR/nCR in response to VDD. Secondary objectives included overall response, safety, and feasibility of collection of peripheral blood stem cells. The regimen was given for six 3-week cycles as follows: Velcade at 1.3 mg/m2 on days 1, 4, 8, and 11, Doxil at 30 mg/m2 on day 4, and dexamethasone at 40 mg on days 1–4 for the first 10 patients and for the remaining patients at 20 mg per on days 1, 2, 4, 5, 8, 9, 11, 12 (same total dose of 160 mg dexamethasone per cycle). The study opened in July 2005 and enrolled 30 patients. Presently, 28 of 30 patients are evaluable for response of which 18 completed 6 cycles. The characteristics of the evaluable patients included: median age 61 (range 39–83), stage III disease in 26 patients (stage II in 2), chromosome 13 deletion in 12, t(4;14) in 2, median beta2-microglobulin 4.4. CR/nCR was observed in 9 patients (32%), very good partial response (VGPR) in 6 (21%), partial response (PR) in 10 (36%) and minor response (MR) in 1 (4%) for an overall response (≥ PR) of 89%, and ≥ VGPR of 53%. The change of dexamethasone schedule did not appear to affect response rates. There was no grade 4 hematological toxicity and grade 3 was limited, with thrombocytopenia in 2 patients and neutropenia in 1. There were no episodes of neutropenic fevers. Grade 3–4 non-hematological toxicities included 4 patients with fatigue, 3 patients with pneumonia, 2 with DVT/PE, 2 with hand-foot syndrome, 1 with partial small bowel obstruction, and 1 with diarrhea secondary to Cryptosporidium sp. Fatigue was significantly reduced after the change of dexamethasone schedule. Peripheral neuropathy was limited to grade 1–2 and observed in 9 patients. All patients are alive. To date, 18/18 patients had successful harvesting of peripheral blood stem cells (median 8.2 x 106 CD34+ cell/kg, range 3.2 to 41.2) and 17 completed at least a single autologous stem cell transplant using melphalan 200 mg/m2 as the preparative regimen (12 single, 5 tandem). Responses were further improved in 11 of these 17 patients bringing overall response rate (≥ PR) to 96%, with 79% of patients achieving ≥ VGPR and 54% achieving CR/nCR. These results indicate that initial treatment with VDD is very effective and well tolerated and does not adversely affect stem cell harvest. Moreover, it appears to improve probability of achieving CR/nCR and VGPR after transplant compared to results from randomized studies with single or tandem transplantation. Considering that achieving CR/nCR or VGPR after ASCT has been associated with improved survival, VDD appears promising as an initial treatment strategy to improve survival.


2017 ◽  
Vol 35 (15_suppl) ◽  
pp. 8002-8002 ◽  
Author(s):  
Jacob Laubach ◽  
Ajay K. Nooka ◽  
Craig Cole ◽  
Elizabeth O'Donnell ◽  
Ravi Vij ◽  
...  

8002 Background: Elotuzumab (elo) is approved for use in combination with lenalidomide (len) and dexamethasone (dex) for relapsed and refractory multiple myeloma (MM). This phase 2a study evaluated the efficacy and safety of elo in combination with len, subcutaneous bortezomib (bortez), and dex. Methods: The primary objective of this study was to determine the response rate of newly diagnosed, transplant-eligible MM patients (pts) after four cycles of therapy with elo plus len, bortez, and dex. Pts were newly diagnosed with MM by the revised IMWG criteria. Elo was administered days 1, 8, and 15 of the first two 28 day cycles and days 1 and 11 in cycles 3 and 4. Following cycle 4, pts underwent stem cell mobilization and could then proceed with either autologous stem cell transplant (ASCT) or defer transplant and receive four more cycles of induction therapy with elo plus len, bortez, and dex. Following either ASCT or 8 cycles of induction chemotherapy, pts transitioned to risk-adapted maintenance with elo, len, and dex plus every other week bortez (pts with high-risk cytogenetics, ISS stage II or III) or elo, len, dex (all others). Responses were assessed by the modified Uniform Response Criteria and toxicities graded based on NCI-CTCAE V4. Results: 41 patients with a median age of 60 were enrolled and this analysis encompasses response data from 29 patients. The overall response rate (ORR) after four cycles was 100%, with 24% achieving a complete response (CR), 47% achieving a very good partial response (VGPR), and 29% a partial response (PR). The rate of VGPR or better was 71%. The median number of CD34+ stem cells collected was 10.3 x 10^6. The most frequent grade 3 or higher toxicities included thrombocytopenia (15%) and hypophosphatemia (12%). The rate of grade 3 or higher peripheral neuropathy was 2%. Two pts died while on study, one due to complications of septicemia and the other due to respiratory failure. Conclusions: The combination of elo plus len, bortez, and dex was effective in newly diagnosed, ASCT-eligible patients. The rate of high-grade toxicities was low, although there were two grade 5 events (septicemia and respiratory failure). Clinical trial information: NCT02375555.


2001 ◽  
Vol 19 (1) ◽  
pp. 213-219 ◽  
Author(s):  
Alberto S. Pappo ◽  
Elizabeth Lyden ◽  
John Breneman ◽  
Eugene Wiener ◽  
Lisa Teot ◽  
...  

PURPOSE: To investigate the antitumor activity and toxicity of topotecan, used alone and in combination with conventional therapy, in patients with metastatic rhabdomyosarcoma (RMS). PATIENTS AND METHODS: Forty-eight patients younger than 21 years of age with newly diagnosed metastatic RMS received 2.0 to 2.4 mg/m2 of topotecan intravenously daily for 5 days every 21 days before standard therapy. Two courses were given in the absence of progressive disease or excessive toxicity and response was assessed. Patients with at least a partial response (PR) to topotecan proceeded to therapy with alternating courses of vincristine 1.5 mg/m2, dactinomycin 1.5 mg/m2, and cyclophosphamide 2.2 g/m2 (VAC) and vincristine 1.5 mg/m2, topotecan 0.75 mg/m2 daily × 5, and cyclophosphamide 250 mg/m2 daily × 5. Patients who did not respond to topotecan received continuation therapy with VAC alone. RESULTS: The overall response rate to topotecan was 46% (complete response, 4%; partial response 42%). Unexpectedly, patients with alveolar RMS had a higher rate of response (65%) than those with embryonal RMS (28%; P = .08). The most common grade 3 or 4 toxicities were neutropenia (67%), anemia (33%), thrombocytopenia (25%), and infection (21%). Two-year failure-free survival and survival estimates were 24% and 46%, respectively. Response to window therapy did not correlate with survival. CONCLUSION: The high response rate and acceptable toxicity profile of topotecan in children with advanced RMS support further evaluation of this agent in phase III trials. The superior responses in alveolar RMS are of interest.


Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 653-653 ◽  
Author(s):  
P. Sonneveld ◽  
B. van der Holt ◽  
I. G.H. Schmidt-Wolf ◽  
U. Bertsch ◽  
L. el Jarari ◽  
...  

Abstract The randomized, open-label, phase III trial HOVON-65/GMMG-HD4 was designed to evaluate the efficacy of bortezomib prior to HDM for response and progression-free survival (PFS) in patients with newly diagnosed MM. The trial was performed in 75 referral centers in the Netherlands and Belgium (HOVON group) and Germany (GMMG group). Patients with Salmon & Durie (SD) stage II or III, age 18–65 years inclusive, were randomly assigned to 3 cycles of VAD (vincristine 0.4 mg, adriamycine 9 mg/m2 days 1–4, dexamethasone 40 mg days 1–4, 9–12, and 17–20) or PAD (bortezomib 1.3 mg/m2 days 1,4,8,11, adriamycine 9 mg/m2 days 1–4, dexamethasone 40 mg days 1–4, 9–12, and 17–20). No thrombosis prophylaxis was given. Stem cells were mobilized using the CAD regimen, including cyclophosphamide 1000 mg/m2 iv day 1, and G-CSF. After induction therapy, all patients were to receive 1 or 2 cycles of high-dose melphalan (HDM) 200 mg/m2 with autologous stem cell rescue followed by maintenance with thalidomide 50 mg daily (VAD arm) or bortezomib, 1.3 mg/m2 once every 2 weeks (PAD arm) for 2 years. Between May 4, 2005 and May 16, 2008, 833 patients were randomized. After the trial was closed, we here report the planned interim analysis data on response after induction and HDM-1 of the initial 150 (75 per arm) randomized patients. The data of the initial 300 registered patients (150 per arm) will be available by November 1, 2008 and presented. The 2 randomization arms were equal for SD stage of disease, ISS stage, and distribution of chromosomal abnormalities. 134 patients (89%) completed PAD/VAD and 130 patients (87%) completed HDM-1, with no difference between the treatment arms. Full dose bortezomib could be administered in 95 % (PAD1), 79 % (PAD2) and 85 % (PAD3) of patients. Successful stem cell apheresis was achieved in all 132 patients who received CAD. Adverse events CTC grade 2–4 during PAD vs VAD included neurologic or polyneuropathy (PNP) 38% vs 21 %, constitutional symptoms 30 % vs 24 %. PNP of CTC grade 1–4 was more frequent in the PAD arm (p=0.01), while DVT/pulmonary embolism was diagnosed in 10 % during VAD and 6 % during PAD. Responses were assessed according to EBMT criteria including VGPR after PAD/VAD, after HDM-1 and best response on protocol treatment. Complete Response (CR), Very Good Partial Response (VGPR) and Partial Response (PR) in both arms were compared by logistic regression (table 1) Response ITT (%) PAD VAD p-value PAD+ HDM-1 VAD+ HDM-1 p-value CR 5 0 0.06 15 4 0.05 ≥VGPR 41 17 0.001 59 47 0.14 ≥PR 80 64 0.03 92 77 0.01 The (preliminary) overall complete response rate including maintenance was 27 % (PAD arm) and 5% (VAD arm) (p=0.001). Deletion of chromosome 13q did not have a significant impact on response. We conclude that PAD induces significantly more PR+VGPR+CR as compared with VAD, and that this effect is sustained after HDM-1. This trial was supported by the Dutch Cancer Foundation (EudraCT nr 2004-000944-26), the German Federal Ministry of Education and Research and a grant from Johnson and Johnson


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