Abstract
Background
With the advent of novel drugs improved overall survival in patients with multiple myeloma, including patients who received up-front autologous stem cell transplantation (ASCT), has been reported from several centers. Here we report on overall survival in a population-based cohort of patients receiving ASCT as first line treatment and in whom novel agents were an option for second and later lines of treatment.
Methods
Patients with multiple myeloma ≤ 65 years of age who were considered for ASCT from 01.01.2001–31.06.2005 (period 1) and from 01.07.2005 until 31.12.2009 (period 2) at Oslo University Hospital (OUH) were identified. Relevant data were collected from the patients' medical records.
Results
Altogether, 293/355 patients received ASCT. In all, median OS was 82.9 months in patients ≤ 60 years of age and 59.0 months in patients 61–65 years. For patients ≤ 60 years of age median OS increased from 70.6 months to 87.7 months (p = 0. 22) and median survival after start of second line therapy increased from 34.5 months to 46.5 months (p = 0.015) between the two periods. For patients 61–65 years of age median OS increased from 57.3 months to 61.2 months (p = 0. 87) and median survival after start of second line therapy was practically unchanged (32.6 months vs. 33.1 months (p = 0.97) between the periods. In patients ≤ 60 years of age salvage ASCT was used in 34% of the patients while in patients 61–65 years of age salvage ASCT was used in 7.3% of the patients. The use of salvage ASCT and novel drugs, as well as the number of treatment lines, were higher in patients ≤ 60 years of age and increased during the study period.
Conclusion
In patients ≤ 60 years of age an increased median OS of 17 months between the two periods were noted, but the difference failed to reach statistical significance. However, a statistically significant difference in median survival of 12 months after start of second line therapy was found in this age group, which may be explained by a more active second line treatment. In patients 61–65 years only a slight increase of survival, not statistically significant, was noted between the periods.
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