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High-dose therapy (HDT) followed by autologous stem cell transplantation (ASCT) remains the standard of care for patients younger than 65 years of age with multiple myeloma (MM). However, this therapeutic approach has undergone substantial advances in this last decade, mainly due to the introduction of new drugs such as thalidomide, lenalidomide and bortezomib. These new drugs, in different combinations, have shown to significantly increase response rates after induction therapy and ASCT. Moreover, the positive results obtained with these agents in consolidation and maintenance strategies after ASCT strongly support the concept of continuous therapy, whose ultimate goal is the long-term control of the disease and the improvement of outcome. Preliminary data from studies investigating next generation proteasome inhibitors, such as carfilzomib and ixazomib, used upfront as well as at subsequent therapeutic lines, demonstrate the possibility of achieving molecular remission in most of the patients. The deeper responses obtained with new drugcombinations questioned the role of ASCT, and large, ongoing, phase 3 trials will shed light on the role and the timing of ASCT., (Copyright© Bentham Science Publishers; For any queries, please email at epub@benthamscience.org.)

Introduction: Novel agents and the availability of autologous stem-cell transplantation have revolutionized the treatment of patients with multiple myeloma. First-generation novel agents namely thalidomide, lenalidomide, and bortezomib have significantly improved response and survival of patients. Second-generation novel agents such as pomalidomide, carfilzomib, and monoclonal antibodies are being tested both in the newly diagnosed and relapse settings, and results are promising., Areas Covered: In this review article, the main results derived from Phase III trials with thalidomide, lenalidomide, and bortezomib for the treatment of myeloma patients, both at diagnosis and at relapse, are summarized. Data about second-generation novel agents such as pomalidomide and carfilzomib are also reported. Newer effective drugs currently under investigation and the promising results with monoclonal antibodies are described., Expert Opinion: The availability of new effective drugs has considerably increased the treatment options for myeloma patients. A sequential approach including induction, transplantation (when possible), consolidation, and maintenance is an optimal strategy to achieve disease control and prolong survival. Despite these improvements, the best combination, the optimal sequence, and the proper target of newer drugs need to be defined.