Romiplostim (Nplate)

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General information

Class/mechanism: Thrombopoietin (TPO/cMpl) receptor agonist. Romiplostim is an Fc-peptide fusion protein (peptibody) that interacts with the TPO receptor to trigger downstream signal cascades that ultimately stimulate platelet production by promoting proliferation and differentiation of megakaryocytes from bone marrow progenitor cells.[1][2][3]
Route: SC
Extravasation: n/a

For conciseness and simplicity, currently will focus on treatment regimens and not list information such as: renal/hepatic dose adjustments, metabolism (including CYP450), excretion, monitoring parameters (although this will be considered for checklists), or manufacturer. Instead, for the most current information, please refer to your preferred pharmacopeias such as Micromedex, Lexicomp, UpToDate (courtesy of Lexicomp), or the prescribing information.[1]

Diseases for which it is used

Patient drug information

History of changes in FDA indication

  • 2008-08-22: Initial approval
  • 2018-12-14: Approved for pediatric patients 1 year of age and older with immune thrombocytopenia (ITP) for at least 6 months who have had an insufficient response to corticosteroids, immunoglobulins, or splenectomy.

History of changes in EMA indication

  • 2009-02-04: Initial authorization

History of changes in PMDA indication

  • 2019-06-18: New indication and a new dosage for the treatment of aplastic anemia in patients who have not responded sufficiently to conventional treatments.

Also known as

  • Brand name: Nplate