Dynamic dosing of romiplostim in patients with immune thrombocytopenia purpura: Two case reports

Jeffrey A. Gilreath, Mei Wei, Shilpa Paul, Charles J. Parker, David D. Stenehjem, George M. Rodgers

Research output: Contribution to journalArticle

Abstract

Romiplostim is a thrombopoietin receptor agonist approved for the treatment of immune thrombocytopenia purpura. When following FDA-approved romiplostim prescribing recommendations to withhold treatment for platelet counts above 400k/µL, some patients exhibit a precipitous decline in their platelet count potentially causing patient harm. We present two cases where stable platelet counts were achieved only through persistent weekly dosing of romiplostim despite platelet counts above 400k/µL on the day of administration. Therefore, continuous weekly dosing of romiplostim despite platelet count being above 400k/µL combined with twice weekly vigilant monitoring is an alternative method of romiplostim dosing that mitigates severe fluctuations in platelets. We also discuss important details, postulated mechanisms, and evidence-based mitigation strategies.

Original languageEnglish (US)
Pages (from-to)719-723
Number of pages5
JournalJournal of Oncology Pharmacy Practice
Volume25
Issue number3
DOIs
StatePublished - Apr 1 2019

    Fingerprint

Keywords

  • Immune thrombocytopenic purpura
  • benign hematology
  • romiplostim
  • thrombopoietin receptor agonist

Cite this