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A BSTRACT: PURPOSE: Optimal treatment for primary central nervous system lymphoma (PCNSL) comprises polychemotherapy induction with high-dose methotrexate followed by consolidation therapy, but there is no standard treatment regimen because of a lack of comparative trials examining efficacy or relative value. We performed a retrospective outcome and relative cost analysis on consolidation regimens to gain perspective on how cost and benefit can be weighed in medical decisions for patients with PCNSL.Patients with newly diagnosed PCNSL who completed consolidation at our institution from July 1, 2012, to March 1, 2019, were included. Patients completed etoposide/cytarabine (EA), high-dose cytarabine (HIDAC), or high-dose chemotherapy with autologous stem-cell rescue (HDC-ASCR) as consolidation regimen. Data were collected from the electronic medical record and our institution's Value Driven Outcomes tool. Survival was analyzed as date of diagnosis to last known date of survival.Of the 22 patients included in the study, 12 completed the EA regimen, 4 completed HDC-ASCR, and 6 completed HIDAC. Facility and pharmacy costs contributed most to the cost of each treatment. HDC-ASCR treatment was 50× the cost of the cheapest treatment, HIDAC. Outcomes were numerically superior with HDC-ASCR and HIDAC compared with EA (2-year progression-free survival 100% vs. 100% vs. 63.6%, respectively, p = 0.1915).This small retrospective cost-benefit analysis provides evidence that HDC-ASCR may be a superior treatment for PCNSL but at a higher cost than other consolidation regimens. HIDAC may increase value for patients, including elderly patients, who are not appropriate candidates for HDC-ASCR when compared with EA. |
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