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Efficacy and Safety of Romiplostim in Adult Subjects With Persistent or Chronic Immune Thrombocytopenia (ITP)

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Kyowa Kirin

Status and phase

Completed
Phase 3

Conditions

Immune Thrombocytopenia

Treatments

Drug: Romiplostim
Drug: Placebo

Study type

Interventional

Funder types

Industry

Identifiers

NCT02868099
531-CN002

Details and patient eligibility

About

The objective is to evaluate the efficacy and safety of romiplostim for injection in adlut subjects with persistent or chronic primary immune thrombocytopenia (ITP).

Enrollment

203 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion criteria

  • Diagnosed with immune thrombocytopenia (ITP) for at least 6 months prior to signing the informed consent form (ICF).
  • Subject is ≥ 18 years old while signing the ICF.
  • Patients who have no response or relapsed after splenectomy. Or patients who have not been splenectomised and have no response or relapse to at least 1 prior treatment for immune thrombocytopenia (ITP).
  • The mean of 3 scheduled platelet counts taken during the screening period must be: < 30 ×10^9/L, with none >35×10^9/L.

Exclusion criteria

  • Any known history of bone marrow stem cell disorder. Any abnormal bone marrow findings other than those typical of ITP.
  • Any active malignancy. If prior history of cancer other than basal cell carcinoma or cervical carcinoma in situ, and no treatment or active disease within 5 years prior to signing the ICF..
  • Received hematopoietic growth factors (e.g., granulocyte colony-stimulating factor, macrophage colony-stimulating factor, erythropoietin, interleukin-11) for any reason within 4 weeks prior to signing the ICF.
  • Received myeloproliferative leukemia (MPL) stimulation product other than the subject who had suspended recombinant human thrombopoietin (rHuTPO) for injection for 4 weeks before signing ICF.
  • Received any anti-malignancy agents (e.g., cyclophosphamide, 6-mercaptopurine, vincristine, vinblastine, Interferon-alfa) for any reason within 8 weeks prior to signing the ICF.
  • Received any monoclonal antibody drugs (e.g., rituximab) for any reason within 14 weeks prior to signing the ICF.
  • Less than 4 weeks since end of any clinical trials about therapeutic drug or device prior to signing the ICF.
  • Pregnant or breastfeeding.
  • In the opinions of the principal investigator or investigators, the patients are not suitable for participation in this trial.

Trial design

Primary purpose

Treatment

Allocation

Randomized

Interventional model

Parallel Assignment

Masking

Double Blind

203 participants in 2 patient groups, including a placebo group

Placebo
Placebo Comparator group
Description:
Subjects received placebo for injection treatment will be administered subcutaneously once a week
Treatment:
Drug: Placebo
Drug
Experimental group
Description:
Subjects received Romiplostim for injection treatment will be administered subcutaneously once a week
Treatment:
Drug: Romiplostim

Trial contacts and locations

1

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Data sourced from clinicaltrials.gov

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