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| Study Type: | Interventional |
|---|---|
| Study Design: | Allocation: Randomized; Endpoint Classification: Safety/Efficacy Study; Intervention Model: Single Group Assignment; Masking: Open Label; Primary Purpose: Treatment |
| Conditions: |
Thrombocytopenia Idiopathic Thrombocytopenic Purpura |
| Intervention: |
Biological: AMG 531 |
Participant Flow
| Key information relevant to the recruitment process for the overall study, such as dates of the recruitment period and locations |
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| Participants were enrolled from 2 August 2004 through 15 April 2009 |
| Significant events and approaches for the overall study following participant enrollment, but prior to group assignment |
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| No text entered. |
| Description | |
|---|---|
| Romiplostim (AMG 531) in Adult Population | Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 mcg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 mcg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 mcg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 mcg/kg were permitted to remain on that higher dose, but could not increase their dose. In addition, if the participant's dose was decreased, it could not be increased to >10 mcg/kg. |
| Romiplostim (AMG 531) in Pediatric Population | Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 mcg/kg based on platelet counts. |
| Romiplostim (AMG 531) in Adult Population | Romiplostim (AMG 531) in Pediatric Population | |
|---|---|---|
| STARTED | 292 | 21 |
| Received Study Medication | 291 | 20 |
| COMPLETED | 200 | 17 |
| NOT COMPLETED | 92 | 4 |
| Protocol deviation | 1 | 0 |
| Noncompliance | 3 | 1 |
| Adverse Event | 11 | 0 |
| Withdrawal by Subject | 26 | 2 |
| Requirement for alternative therapy | 11 | 1 |
| Physician Decision | 7 | 0 |
| Lost to Follow-up | 3 | 0 |
| Death | 15 | 0 |
| Protocol-specified criteria | 3 | 0 |
| Pregnancy | 1 | 0 |
| Other | 11 | 0 |
Baseline Characteristics
| Description | |
|---|---|
| Romiplostim (AMG 531) in Adult Population | Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 mcg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 mcg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 mcg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 mcg/kg were permitted to remain on that higher dose, but could not increase their dose. In addition, if the participant's dose was decreased, it could not be increased to >10 mcg/kg. |
| Romiplostim (AMG 531) in Pediatric Population | Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 mcg/kg based on platelet counts. |
| Romiplostim (AMG 531) in Adult Population | Romiplostim (AMG 531) in Pediatric Population | Total | |
|---|---|---|---|
|
Number of Participants
[units: participants] |
292 | 21 | 313 |
|
Age
[units: Years] Mean ± Standard Deviation |
54.2 ± 16.9 | 10.2 ± 5.1 | 51.3 ± 19.7 |
|
Gender
[units: Participants] |
|||
| Female | 184 | 6 | 190 |
| Male | 108 | 15 | 123 |
|
Race/Ethnicity, Customized
[units: Participants] |
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| Black or African American | 13 | 3 | 16 |
| White or Caucasian | 246 | 13 | 259 |
| Hispanic or Latino | 21 | 4 | 25 |
| Asian | 9 | 0 | 9 |
| Japanese | 1 | 0 | 1 |
| American Indian or Alaska Native | 1 | 0 | 1 |
| Native Hawaiian or Other Pacific Islander | 1 | 0 | 1 |
| Other | 0 | 1 | 1 |
Outcome Measures
| 1. Primary: | Adverse Events [ Time Frame: Duration of treatment plus 8 weeks (up to 285 weeks) ] |
| 2. Secondary: | Platelet Response [ Time Frame: Duration of treatment (up to 277 weeks) ] |
| 3. Secondary: | Reduction or Discontinuation of Concurrent ITP Therapies [ Time Frame: Duration of treatment (up to 277 weeks) ] |
More Information
| Principal Investigators are NOT employed by the organization sponsoring the study. | ||||||
| There IS an agreement between Principal Investigators and the Sponsor (or its agents) that restricts the PI's rights to discuss or publish trial results after the trial is completed. | ||||||
The agreement is:
|
| Limitations of the study, such as early termination leading to small numbers of participants analyzed and technical problems with measurement leading to unreliable or uninterpretable data |
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| No text entered. |
| Responsible Party: | Global Development Leader, Amgen Inc. |
| ClinicalTrials.gov Identifier: | NCT00116688 History of Changes |
| Other Study ID Numbers: | 20030213 |
| Study First Received: | June 30, 2005 |
| Results First Received: | March 4, 2011 |
| Last Updated: | March 4, 2011 |
| Health Authority: | Belgium: Directorate general for the protection of Public health: Medicines; Belgium: Directorate-General for Medicinal Products; Belgium: Federal Public Service (FPS) Health, Food Chain Safety and Environment; Belgium: FPS of Public Health, Food Chain Security and Environment; Belgium: Pharmaceutical Inspectorate; Belgium: Service Public Federal Sante Publiquest, Securite de la Chaine alimentaire et Environnement; Belgium: Service Public Fédéral Santé Publique, Sécurité de la Chaîne alimentaire et Environnement; Canada: Health Canada; Canada: Health Products and Food Branch; Canada: Institutional Review Board; Czech Republic: State Institute for Drug Control; Czech Republic: Statni ustav pro kontrolu leciv; EU: CHMP; European Union: European Medicines Agency; France and Sweden: European Medicines Agency; France: Afssaps - French Health Products Safety Agency; France: CCPPRB Central Ethics Committee; France: Ministry of Health; Germany: Federal Institute for Drugs and Medical Devices; Germany: Paul_Ehrlich-Institut Bundesamt fur Sera und Impfstoffe; Italy: Local Ethics Committees; Italy: Ministry of Health; Netherlands: CCMO (Centrale Commissie Mensgebonden Onderzoek): Central Committee Human Bound Research; Netherlands: Medicines Evaluation Board; Netherlands: Medisch Centrum Rijnmond_Zuid, lcatie Zuider; Austria: Secretariat of Health; Spain: Agencia Española de Medicamentos y Productos Sanitarios; Spain: Spanish Agency of Medicines; Spain: Spanish Drug Agency; Switzerland: Agency for Therapeutic Products; Switzerland: Local Ethics Committee; Switzerland: Swissmedic (Swiss Agency for Therapeutic Products); United Kingdom: Medicines and Healthcare Products Regulatory Agency; Poland: Drug Institut; Poland: Office for Registration of Medicinal Products, Medical Devices and Biocidal Products; United States: Food and Drug Administration; Australia: Department of Health and Ageing Therapeutic Goods Administration; Australia: Human Research Ethics Committee; Australia: Therapeutic Goods Administration; Austria: AGES - PharmaMed Austria Institut Wissenschaft & Information; Austria: Bundesamt fur Sicherheit im Gesundheitswesen; Austria: Bundesamt für Sicherheit im Gesundheitswesen; Austria: Central Ethics Committee; Austria: Competant Authority; Austria: Federal Ministry for Health and Women |