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Romiplostim - Amgen

Drug Profile

Romiplostim - Amgen

Alternative Names: AMG-531; Nplate; Romiplate

Latest Information Update: 31 Aug 2026

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At a glance

  • Originator Kirin-Amgen
  • Developer Amgen; Kirin-Amgen
  • Class Antianaemics; Carrier proteins; Immunotherapies; Radioprotectives; Recombinant fusion proteins; Skin disorder therapies
  • Mechanism of Action Thrombopoietin receptor agonists
  • Orphan Drug Status

    Orphan designation is assigned by a regulatory body to encourage companies to develop drugs for rare diseases.

    Yes - Idiopathic thrombocytopenic purpura; Radiation injuries; Thrombocytopenia; Aplastic anaemia
  • New Molecular Entity Yes

Highest Development Phases

  • Marketed Acute radiation syndrome; Aplastic anaemia; Idiopathic thrombocytopenic purpura
  • Phase III Thrombocytopenia
  • Phase I/II Myelodysplastic syndromes

Most Recent Events

  • 04 Aug 2026 Phase-III clinical trials in Idiopathic thrombocytopenic purpura (Treatment-naive, Combination therapy) (SC) (NCT07700238)
  • 13 Jul 2026 Amgen plans a phase III ROMISTER trial for Idiopathic thrombocytopenic purpura (Combination therapy, Treatment naive) (SC) in July 2027 (NCT07700238)
  • 30 Sep 2025 Regulatory submission withdrawn for Aplastic anaemia in Taiwan (SC) (Kyowa Kirin pipeline, September 2025)

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