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Long term follow-up observational study after clinical trials of AMG531 (Romiplostim) in patients with untreated Aplastic Anemia (531-005 Study)

Long term follow-up observational study after clinical trials of AMG531 (Romiplostim) in patients with untreated Aplastic Anemia (531-005 Study) - 531-005

Status
Active, not recruiting
Phases
Unknown
Study type
Observational
Source
JPRN
Registry ID
JPRN-UMIN000044014
Enrollment
45
Registered
2021-04-22
Start date
2021-05-01
Completion date
Unknown
Last updated
2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

aplastic anemia

Interventions

None listed

Sponsors

Kyowa Kirin Co., Ltd.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: Patients whose written consent to participate in this research was obtained among patients registered for Study 531-003/531-004 Of the patients who died before their consent to participate in this research was obtained among those registered for Study 531-003/531-004, patients whose legally authorized representatives such as their family had given the consent or patients whose legally authorized representatives had not refused in the disclosure of information by opt-out Of the patients who died before their consent to participate in this research was obtained among those registered for Study 531-003/531-004, patients, patients for whom the consent process exemption was approved by the Ethics Review Committee, etc. of the participating medical institutions at the participating medical institutions in the countries without the opt-out system

Exclusion criteria

Exclusion criteria: Patients who are judged by the investigator or sub-investigator to be unfavorable for participation in this research

Design outcomes

Primary

MeasureTime frame
Presence or absence of hematological response at 2 years and up to 5 years after the start of romiplostim treatment in study 531-003/531-004

Secondary

MeasureTime frame
1) Duration of hematological response in patients who achieved hematologic response at the completion of study 531-003/531-004 2) Time courses of Hb level, platelet count, and neutrophil count 3) Presence or absence of platelet/red blood cell transfusion and G-CSF product administration 4) Dose level and administration period of cyclosporine A 5) Presence or absence of transformation to MDS/AML and presence or absence of occurrence of new chromosome abnormality 6) Time to the start of subsequent treatment or to death 7) Overall survival

Countries

Japan,Asia(except Japan)

Contacts

Public ContactMasaru Gamou

Kyowa Kirin Co., Ltd. Medical Affairs

ma.oncology.g.19@kyowakirin.com03-5205-7200

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026