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11. Fostamatinib or Thrombopoietin for the Treatment of Chronic Immune Thrombocytopenia in Adult Patients: A Real-World Assessment of Safety, Effectiveness and Cost.

Author

Dranitsaris, George, Peevyhouse, Aaron, Wood, Tiffany, Kreychman, Yuliya, Neuhalfen, Heather, and Moezi, Mehdi

Subjects
*IDIOPATHIC thrombocytopenic purpura, *THROMBOPOIETIN, *COST effectiveness, *ADULTS, *END of treatment
Abstract

Introduction: Chronic immune thrombocytopenia purpura (ITP) in adults is a serious autoimmune disease in which platelets are prematurely destroyed, leaving the patient vulnerable to bruising and bleeding. Initial treatment starts with corticosteroids. In patients who become resistant or intolerant to corticosteroids, the thrombopoietic agents (TPOs), consisting of romiplostim (ROM), eltrombopag (ELT), and avatrombopag (AVA), or the spleen tyrosine kinase inhibitor fostamatinib (FOS), are appropriate next lines of therapy. In this study, the comparative safety, effectiveness, and cost of care between fostamatinib and the TPOs were evaluated in a real-world setting. Methods: A retrospective analysis of 17 community hematology practices across the USA was conducted to identify adult ITP patients who received one of the four agents. Data collection consisted of patient demographics, disease characteristics, as well as number and type of prior treatments. From the first day until the end of treatment, data were also collected on platelet (PLT) counts, adverse events, the use of rescue IVIG, platelet transfusions, and corticosteroids. Multivariable logistic regression analysis was used to compare PLT-related endpoints between agents. Results: A sample of 179 ITP patients who had received at least one of the four agents was identified. This resulted in a final sample of 51, 87, 127, and 44 patients who received FOS, ELT, ROM, or AVA, respectively. At month six, there were no significant differences between FOS and the TPOs in terms of the proportion of patients with the PLT count being ≥30 × 103/μL, ≥50 × 103/μL as well as the proportion of patients whose PLT levels doubled relative to baseline. The frequency of thromboembolic events (TEs) was 3.9% in FOS patients compared to 9.2%, 4.7%, and 11.4% in the ELT, ROM, and AVA groups. The mean cost per patient with FOS was $99,209 (95% CI: $59,595–$115,074), compared to $92,426 (95% CI: $68,331–$115,519), $108,482 (95% CI: $84,782–$132,182), and $131,050 (95% CI: $83,327–$179,897) for ELT, ROM, or AVA, respectively. Conclusions: In this real-world analysis, FOS was comparable to the TPOs in maintaining PLTs at clinically beneficial levels. Given these findings, the choice of therapy should be based on overall patient safety, preexisting risk factors for TEs, and cost effectiveness. [ABSTRACT FROM AUTHOR]

Published
2024
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30. Interim analysis of a single-center, single-arm, prospective phase 2 study to evaluate the efficacy and safety of benralizumab for alpelisib rash in metastatic PIK3CA-mutant, hormone receptor–positive breast cancer.

Author

Lacouture, Mario E., primary, Pan, Alexander, additional, Dranitsaris, George, additional, Harris, Ucalene, additional, Chandarlapaty, Sarat, additional, Dang, Chau T., additional, Gajria, Devika, additional, Gordon, Allison, additional, Iyengar, Neil M., additional, Robson, Mark E., additional, Razavi, Pedram, additional, Rosen, Ezra, additional, Wong, Serena Tsan-Lai, additional, Jain, Manu, additional, Moy, Andrea, additional, and Markova, Alina, additional

Published
2022
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31. Dermatological Adverse Events in Prostate Cancer Patients Treated with the Androgen Receptor Inhibitor Apalutamide

Author

Pan, Alexander, primary, Reingold, Rachel E., additional, Zhao, Jimmy L., additional, Moy, Andrea, additional, Kraehenbuehl, Lukas, additional, Dranitsaris, George, additional, McBride, Sean M., additional, Scher, Howard I., additional, Kollmeier, Marisa A., additional, Xiao, Han, additional, Rathkopf, Dana E., additional, and Lacouture, Mario E., additional

Published
2022
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