PMID- 18463870 OWN - NLM STAT- MEDLINE DCOM- 20081030 LR - 20151119 IS - 1432-0584 (Electronic) IS - 0939-5555 (Linking) VI - 87 IP - 8 DP - 2008 Aug TI - Safety and efficacy of bortezomib and melphalan combination in patients with relapsed or refractory multiple myeloma: updated results of a phase 1/2 study after longer follow-up. PG - 623-31 LID - 10.1007/s00277-008-0501-0 [doi] AB - Bortezomib synergizes with melphalan in preclinical and early clinical studies. Updated data from our phase 1/2 study assessing the safety and efficacy of bortezomib plus melphalan in relapsed/refractory multiple myeloma (MM) are presented. Bortezomib (0.7, 1.0, or 1.3 mg/m(2)) on days 1, 4, 8, and 11 and oral melphalan (0.025-0.25 mg/kg) on days 1-4 of a 28-day cycle were administered. Hematologic toxicities defined the maximum tolerated dose as bortezomib 1.0 mg/m(2) and melphalan 0.10 mg/kg. Because dose-limiting toxicities were attributed to the more myelosuppressive melphalan, cohorts 9 and 10 with higher bortezomib (1.3 mg/m(2)) and lower melphalan (0.025 and 0.10 mg/kg) doses were added. Responses occurred in 32/46 (70%) evaluable patients: two complete (4%), five near-complete (11%), 16 partial (35%), and nine minimal (20%). Complete and near-complete responses were observed only with higher bortezomib doses. Response rates were similar in patients with prior melphalan or bortezomib. Median progression-free survival was 9 months (range, 1-24), and overall survival was 32 months (range, 1-54). The most common grade 3/4 hematologic adverse events (AEs) were neutropenia (31%/0%), thrombocytopenia (25%/2%), and anemia (13%/0%). Grade 4 tumor lysis syndrome was reported in one patient. Fewer grade 3/4 hematologic AEs were reported in cohorts 9 and 10 than in cohorts receiving lower bortezomib and higher melphalan doses. In conclusion, bortezomib plus melphalan is a steroid- and immunomodulatory drug-free regimen that may provide a treatment alternative for elderly patients and patients with significant comorbidity. FAU - Berenson, James R AU - Berenson JR AD - Institute for Myeloma and Bone Cancer Research, West Hollywood, CA 90069, USA. jberenson@imbcr.org FAU - Yang, Hank H AU - Yang HH FAU - Vescio, Robert A AU - Vescio RA FAU - Nassir, Youram AU - Nassir Y FAU - Mapes, Russell AU - Mapes R FAU - Lee, Shi-Pyng AU - Lee SP FAU - Wilson, Joanna AU - Wilson J FAU - Yellin, Ori AU - Yellin O FAU - Morrison, Blake AU - Morrison B FAU - Hilger, Jacqueline AU - Hilger J FAU - Swift, Regina AU - Swift R LA - eng PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article DEP - 20080508 PL - Germany TA - Ann Hematol JT - Annals of hematology JID - 9107334 RN - 0 (Boronic Acids) RN - 0 (Pyrazines) RN - 69G8BD63PP (Bortezomib) RN - Q41OR9510P (Melphalan) SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Anemia/chemically induced MH - Antineoplastic Combined Chemotherapy Protocols/*adverse effects MH - Boronic Acids/administration & dosage/adverse effects MH - Bortezomib MH - Dose-Response Relationship, Drug MH - Female MH - Follow-Up Studies MH - Humans MH - Male MH - Melphalan/administration & dosage/adverse effects MH - Middle Aged MH - Multiple Myeloma/*drug therapy MH - Neoplasm Recurrence, Local/*drug therapy MH - Neutropenia/chemically induced MH - Pyrazines/administration & dosage/adverse effects MH - Thrombocytopenia/chemically induced EDAT- 2008/05/09 09:00 MHDA- 2008/10/31 09:00 CRDT- 2008/05/09 09:00 PHST- 2008/02/19 00:00 [received] PHST- 2008/04/15 00:00 [accepted] PHST- 2008/05/09 09:00 [pubmed] PHST- 2008/10/31 09:00 [medline] PHST- 2008/05/09 09:00 [entrez] AID - 10.1007/s00277-008-0501-0 [doi] PST - ppublish SO - Ann Hematol. 2008 Aug;87(8):623-31. doi: 10.1007/s00277-008-0501-0. Epub 2008 May 8.