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Impact of tandem autologous stem cell transplantation and response to transplant in the outcome of multiple myeloma.
BACKGROUND: Multiple Myeloma (MM) is the commonest indication for autologous stem cell transplantation (ASCT).
METHODS: We retrospectively analysed data from 85 patients with MM submitted to ASCT in our centre from 2000 to 2010: 132 ASCT were realized, 80 of them as tandem.
RESULTS: After induction, 17.6% were in complete remission (CR), 41.2% in very good partial remission (VGPR) and 41.2% in partial remission (PR). After transplant 44.7% were in CR, 15.3% in VGPR and 40% in PR. With 22 months (range - 3 to 117 months) of median follow-up, median overall survival (OS) was 43 months and progression-free survival (PFS) 22 months. At 5 years, OS was 45.3% (36.7-53.9%, 95%) and PFS 24.5% (18-31%, 95%). Patients with CR after ASCT had significantly longer PFS as compared to patients with PR (27 vs 7 months; p = 0.034) but not when compared to patients with VGPR (27 vs 19 months, p = 0.485). The tandem approach represented an advantage in OS and PFS when compared to only one ASCT (31 vs 19 months - p = 0.018, and 40 vs 31 - p = 0.04, respectively).
CONCLUSIONS: Our results highlight the impact of response to transplant in patients PFS and tandem modality showed to carry better PFS and OS then the single transplant.
METHODS: We retrospectively analysed data from 85 patients with MM submitted to ASCT in our centre from 2000 to 2010: 132 ASCT were realized, 80 of them as tandem.
RESULTS: After induction, 17.6% were in complete remission (CR), 41.2% in very good partial remission (VGPR) and 41.2% in partial remission (PR). After transplant 44.7% were in CR, 15.3% in VGPR and 40% in PR. With 22 months (range - 3 to 117 months) of median follow-up, median overall survival (OS) was 43 months and progression-free survival (PFS) 22 months. At 5 years, OS was 45.3% (36.7-53.9%, 95%) and PFS 24.5% (18-31%, 95%). Patients with CR after ASCT had significantly longer PFS as compared to patients with PR (27 vs 7 months; p = 0.034) but not when compared to patients with VGPR (27 vs 19 months, p = 0.485). The tandem approach represented an advantage in OS and PFS when compared to only one ASCT (31 vs 19 months - p = 0.018, and 40 vs 31 - p = 0.04, respectively).
CONCLUSIONS: Our results highlight the impact of response to transplant in patients PFS and tandem modality showed to carry better PFS and OS then the single transplant.
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