Autologous stem cell transplant as primary (first ASCT) therapy in multiple myeloma (MM) is standard practice. The role of a second ASCT as management of relapsed disease remains uncertain. We conducted a retrospective case-matched control analysis on patients (n = 106) who underwent a second ASCT compared with conventional chemotherapy (CCT) as for relapsed MM. The median age was 53 years (range: 26-75) and median follow-up 48 months (range: 8, 136). The cumulative incidence of 1 and 5 years nonrelapse mortality (NRM) was 7% (95% confidence interval [CI] 3%-13%) and 12% (95% CI 7%-19%), with a second ASCT inducing a greater partial remission (PR) rate of 63%. The 4-year overall survival (OS) rate was 33% (95% CI 24%-45%). Factors associated with improved OS and progression-free survival (PFS) included younger age (<55 years), β(2)MG <2.5 mg/L at diagnosis, a remission duration of >9 months from first ASCT, and a greater PR in response to their first ASCT. In a matched-cohort analysis with patients receiving conventional chemotherapy (CCT), the same factors were associated with improved OS, with the exception of a longer remission duration (>18 months) from first ASCT. Second ASCT in relapsed MM is associated with superior OS and PFS compared with CCT, offering a potential consolidative option for selected patients.
Guidelines provide recommendations on the management of multiple myeloma (MM), but there are no standard algorithms for the choice and sequencing of treatments. As a result, there is widespread variation in the interpretation and implementation of these guidelines. Areas covered: This review will cover: the real-world data on MM treatment patterns; the approved agents available for the treatment of MM; a comparative summary of the national and international clinical guidelines; a discussion on the impact reimbursement decisions have on treatment availability. Expert commentary: In the future, treatment choices may become even more complex as clonal heterogeneity is better understood in the context of response to treatment, and next-generation agents become available. Although information on real-world practice patterns can provide further guidance, to date, few studies have generated data on patients treated with the newer agents in real-world settings. Furthermore, the translation of guideline recommendations into clinical practice across Europe is inconsistent. Additional real-world data are therefore vital to understanding current clinical practice patterns, so that new agents can be effectively incorporated into existing treatment strategies. Such information may aid the development of better guidance, which will ultimately help to ensure that patients receive the best possible care.
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