Journal
CLINICAL LYMPHOMA & MYELOMA
Volume 8, Issue 5, Pages 294-299Publisher
CIG MEDIA GROUP, LP
DOI: 10.3816/CLM.2008.n.041
Keywords
beta(2)-microglobulin; gene expression profiling; pegylated liposomal doxorubicin; predictive factors
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Background: Few studies have focused on factors affecting outcome in patients with multiple myeloma (MM) treated with thalidomide-based therapy. We investigated factors affecting response, progression-free survival (PFS), and overall survival (OS) in patients with MM treated with the thalidomide, dexamethasone, and pegylated liposomal doxorubicin (ThaDD) regimen with the aim to select patients benefiting more from this therapy. Patients and Methods: Sixty-six patients with MM were treated first line with the ThaDD regimen. We analyzed demographics and disease-related characteristics to search for factors affecting response (>= very good partial remission [VGPR] vs. < VGPR], PFS, and OS. Results: Overall, 45 patients (68%) showed response >= VGPR; median TTP and OS were 23.5 months and 35.5 months, respectively. Multivariate analysis selected only serum C-reactive protein (sCRP) as a predictive factor for response (P < .0001). By multivariate analysis, normal sCRP level (P = .001) and response to treatment >= VGPR (P = .007) were found to be associated with longer PFS. The factors that remained significantly associated with a longer OS when assessed by multivariate analysis were normal sCRP level (P = .005) and response to therapy VGPR (P = .019). Conclusion: Serum C-reactive protein before therapy and response after therapy are the only factors useful in identifying patients benefiting from anthracycline/thalidomide-based therapy.
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