Safety and survival outcomes for bloodless transplantation in patients with myeloma.

High-dose therapy (HDT) and autologous stem cell transplantation (ASCT) are established components in the treatment of multiple myeloma; however, undergoing transplantation usually requires hematopoietic support, which poses a challenge among patients who are unwilling to receive blood products. Most transplant centers decline HDT/ASCT to these patients because of safety concerns. Here, the authors' institutional data on safety, engraftment parameters, and survival outcomes after bloodless ASCT (BL-ASCT) are examined among patients with myeloma. This retrospective case-control study included patients who underwent BL-ASCT and Transfusion-supported ASCT (TS-ASCT) at Emory University Hospital between August 2006 and August 2016. In total, 24 patients who underwent BL-ASCT and 70 who underwent TS-ASCT were included. The median time for neutrophil engraftment, platelet engraftment and the median length of hospital stay all were equivalent for both groups. There were no transplant-related cardiovascular complications or mortality in either the BL-ASCT group or the TS-ASCT group. The median progression-free survival was 36 months and 44 months in the BL-ASCT and TS-ASCT groups, respectively (P = .277), and the median OS was not reached in either group at a median follow-up of 59 months after ASCT (P = .627). There was no transplant-related mortality at the 100-day or 1-year mark in either group. BL-ASCT is safe and feasible; transplant-related mortality, cardiovascular and hematologic complications are similar to those associated with TS-ASCT. Furthermore, BL-ASCT can yield similar engraftment and survival parameters comparable to those observed with TS-ASCT.

Long-Term Follow-Up Results of Lenalidomide, Bortezomib, and Dexamethasone Induction Therapy and Risk-Adapted Maintenance Approach in Newly Diagnosed Multiple Myeloma.

PURPOSE: The combination of lenalidomide, bortezomib, and dexamethasone (RVD) is a highly effective and convenient induction regimen for both transplantation-eligible and -ineligible patients with myeloma. Here, we present the largest cohort of patients consecutively treated with RVD induction therapy followed by risk-adapted maintenance therapy with the longest follow-up and important information on long-term outcomes. PATIENTS AND METHODS: We describe 1,000 consecutive patients with newly diagnosed myeloma treated with RVD induction therapy from January 2007 until August 2016. Demographic and clinical characteristics and outcomes data were obtained from our institutional review board-approved myeloma database. Responses and progression were evaluated per International Myeloma Working Group Uniform Response Criteria. RESULTS: The overall response rate was 97.1% after induction therapy and 98.5% after transplantation, with 89.9% of patients achieving a very good partial response (VGPR) or better and 33.3% achieving stringent complete response after transplantation at a median follow-up time of 67 months. The estimated median progression-free survival time was 65 months (95% CI, 58.7 to 71.3 months) for the entire cohort, 40.3 months (95% CI, 33.5 to 47 months) for high-risk patients, and 76.5 months (95% CI, 66.9 to 86.2 months) for standard-risk patients. The median overall survival (OS) time for the entire cohort was 126.6 months (95% CI, 113.3 to 139.8 months). The median OS for high-risk patients was 78.2 months (95% CI, 62.2 to 94.2 months), whereas it has not been reached for standard-risk patients. Five-year OS rates for high-risk and standard-risk patients were 57% and 81%, respectively, and the 10-year OS rates were 29% and 58%, respectively. CONCLUSION: RVD is an induction regimen that delivers high response rates (VGPR or better) in close to 90% of patients after transplantation, and risk-adapted maintenance can deliver unprecedented long-term outcomes. This study includes the largest cohort of patients treated with RVD reported to date with long follow-up and demonstrates the ability of 3-drug induction regimens in patients with newly diagnosed multiple myeloma to result in a substantial survival benefit.