A cost analysis of sorafenib for desmoid tumors.
Publication/Presentation Date
4-1-2023
Abstract
INTRODUCTION: A recent randomized trial demonstrated that sorafenib improved progression free survival (PFS) in patients with desmoid tumors despite many patients experiencing stable disease or spontaneous regression without treatment. Utilizing these trial data, we performed a cost analysis of sorafenib efficacy through two years of treatment.
METHODS: Current Medicare Part D rates for sorafenib were utilized (dose 400 mg/day, cost $309/day). Annual costs per progression and objective response were calculated. Radiologic progression and response were defined using RECIST criteria. Patients with disease progression were separately analyzed in two groups: both clinical and radiologic (CAR), and radiologic alone.
RESULTS: 84 previously randomized patients were analyzed (placebo: 35, sorafenib: 49). At one year, sorafenib was associated with a 43% absolute risk reduction (ARR) of CAR progression and number-needed-to-treat (NNT) of 2.3 patients/year, costing $259,406. At two years, ARR was 48% and NNT of 2.1 patients/year, costing $473,697. When evaluating only patients with RECIST defined radiologic progression, sorafenib patients experienced ARR of 13.9% with NNT 7.2 and estimated costs of $812,052 at one year. Two-year ARR was 17.5% with NNT 5.7 and estimated costs $1,285,052. Sorafenib patients experienced improved RECIST partial response rates at 1 and 2 years of 14.7% and 14.3%, with NNT 6.8 and 6.9, and costs of $766,938 and $1,556,433; respectively.
CONCLUSION: For the treatment of desmoid tumors, Sorafenib led to improved PFS, but at a significant cost per patient. Favorable RECIST outcomes were less likely and costlier. Patients should be informed of possible benefits of treatment versus potential financial burden.
Volume
29
Issue
3
First Page
663
Last Page
668
ISSN
1477-092X
Published In/Presented At
Johns, M. S., Merritt, W. T., 3rd, Rhodes, L., Ford, C. N., Thompson, M., Lee, W. M., Sheldon, Y., Petrelli, N. J., & Tiesi, G. J. (2023). A cost analysis of sorafenib for desmoid tumors. Journal of oncology pharmacy practice : official publication of the International Society of Oncology Pharmacy Practitioners, 29(3), 663–668. https://doi.org/10.1177/10781552221077927
Disciplines
Medicine and Health Sciences
PubMedID
35112974
Department(s)
Department of Surgery
Document Type
Article