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  • Title: Multiple Myeloma: Risk Adapted Use of Plerixafor for Stem Cell Mobilization Prior to Autologous Stem Cell Transplantation is Effective and Cost Efficient.
    Author: Prakash VS, Malik PS, Sahoo RK, Pramanik R, Choudhary P, Varshney AN, Kumar L.
    Journal: Clin Lymphoma Myeloma Leuk; 2022 Jan; 22(1):44-51. PubMed ID: 34452863.
    Abstract:
    BACKGROUND: We used plerixafor in 'a risk adapted approach' for stem cell mobilization for multiple myeloma (MM) patients prior to autologous stem cell transplantation (ASCT). PATIENTS AND METHODS: Between January, 2017 and December, 2019 105 consecutive patients of MM were recruited (Study Cohort). Patients received inj G-CSF 10 µg/kg in 2 divided doses for 5 days. Day 4 peripheral blood (PB) CD34+ count was used as a guide; if count was < 20 cells/µl, patients received plerixafor. For those with ≥ 20 cells/µl apheresis was commenced on day 5. We compared their outcome with 156 MM patients transplanted between 2012 and 2016 with G-CSF mobilized PB stem cells (Control Cohort). Primary end point was to collect ≥2.0  ×  106 CD34+ cells/kg (minimal harvest). Secondary end points were: no of apheresis sessions, percentage of patients with optimal stem cell harvest (≥4.0  ×  106 CD34+ cells/kg) and cost analysis. An intent to treat analysis was done. RESULT: 96.2% of patients achieved ≥ 2.0  ×  106 CD34+ cells/kg in the study cohort vs. 87.2% in the control cohort, P < .01. Mean apheresis sessions were 1.5 vs. 1.7 respectively, P < .014 . Optimal stem cell harvest was 29.5% vs. 16%,P = .23. Days for neutrophil engraftment (P < 0.025) and for IV antibiotics (P < .0017) were favorable for the study cohort. Incremental cost effectiveness ratio was $ 15.80/- and $ 10.56/- per 1% increase to achieve a minimal and optimal harvest. CONCLUSION: Plerixafor in this risk adapted strategy resulted in successful mobilization, decreased time to engraftment and was cost effective.
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