Open Label Extension Study of Romiplostim (AMG 531) in Thrombocytopenic Patients With Immune (Idiopathic) Thrombocytopenic Purpura (ITP)

Sponsor
Amgen (Industry)
Overall Status
Completed
CT.gov ID
NCT00116688
Collaborator
(none)
313
1
65

Study Details

Study Description

Brief Summary

The purpose of this study is to determine the safety of romiplostim as a long-term treatment in thrombocytopenic subjects with ITP, to evaluate the long-term platelet response to romiplostim, and to evaluate changes in patient reported outcomes due to the use of romiplostim. Participants must have previously completed a romiplostim ITP study.

Condition or Disease Intervention/Treatment Phase
  • Biological: Romiplostim
Phase 3

Study Design

Study Type:
Interventional
Actual Enrollment :
313 participants
Allocation:
Randomized
Intervention Model:
Single Group Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
An Open Label Study Evaluating the Safety and Efficacy of Long-Term Dosing of AMG 531 in Thrombocytopenic Subjects With Immune (Idiopathic) Thrombocytopenic Purpura (ITP)
Study Start Date :
Aug 1, 2004
Actual Primary Completion Date :
Jan 1, 2010
Actual Study Completion Date :
Jan 1, 2010

Arms and Interventions

Arm Intervention/Treatment
Experimental: Romiplostim

Romiplostim weekly subcutaneous dosing based on screening weight and platelet count. Starting dose of 1 µg/kg up to a maximum dose of 10 µg/kg.

Biological: Romiplostim
Romiplostim is supplied in a 5 mL single use glass vial as a sterile, white, preservative-free, lyophilized powder.
Other Names:
  • AMG 531
  • Nplate
  • Outcome Measures

    Primary Outcome Measures

    1. Number of Participants With Adverse Events [Duration of treatment plus 8 weeks (up to 285 weeks)]

      Participants with one or more occurrences of one or more adverse events up to 8 weeks after the end of treatment. Participants with more than one event were only counted once.

    Secondary Outcome Measures

    1. Number of Participants With a Platelet Response [Duration of treatment (up to 277 weeks)]

      Platelet response was defined as having a platelet count of ≥ 50 x 10^9/L at any time on study, excluding platelet counts within 8 weeks after receiving any rescue medications.

    2. Number of Participants With a Reduction or Discontinuation of Concurrent ITP Therapies [Duration of treatment (up to 277 weeks)]

      The number of participants with a reduction or discontinuation of concurrent immune (idiopathic) thrombocytopenic purpura (ITP) therapies (corticosteroids, danazol, azathioprine) during the study.

    3. Change From Baseline in ITP Patient Assessment Questionnaire [Baseline to Week 48]

      The ITP Patient Assessment Questionnaire (ITP-PAQ) assesses ITP-specific health-related quality of life (HRQOL). This questionnaire assesses ITP specific health-related quality of life (HRQOL). The questionnaire consists of 44 items and has six domains: These domains assess the impact of ITP on Physical Health, Mental Health, Work, Social Activity, Women's Health and Overall QOL. The impact of ITP on Physical Health consists of four sub-scales, which evaluate ITP related Symptoms, Fatigue, Bother and Activity. The impact of ITP on Mental Health consists of two sub-scales, which evaluate Psychological distress and Fear in a population with ITP. Items are scored from 0-100 with higher scores indicating better HRQOL.

    4. Change From Baseline in Short Form 36 (SF-36) [Baseline to Week 48]

      The SF-36 is a widely used generic health-related quality of life measure. It has 36 questions with 8 domains: Physical Functioning, Role Physical, Bodily Pain, General Health, Vitality, Social Functioning, Role Emotional and Mental Health. Items are scored from 0 to 100 with higher scores indicating better health status.

    5. Change From Baseline in Euroqol-5D (EQ-5D) Index Score [Baseline to Week 48]

      The EQ-5D is a patient-completed, multidimensional measure of health related quality of life. The instrument is applicable to a wide range of health conditions and treatments and results in a single index score and a visual analog scale (VAS) score. The EQ-5D descriptive health profile comprises five dimensions of health (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). Each dimension comprises three levels (no problems, some/moderate problems, extreme problems). A unique EQ-5D health state is defined by combining one level from each of the five dimensions. EQ-5D index values range from -0.59 to 1.00. Higher EQ-5D Index scores represent better health status.

    6. Change From Baseline in Euroqol-5D (EQ-5D) Visual Analogue Scale (VAS) [Baseline to Week 48]

      The EQ-5D is a patient-completed, multidimensional measure of health related quality of life. The EQ-5D VAS records the respondent's self-rated health status on a vertical graduated (0-100) visual analogue scale. Higher EQ-5D VAS scores represent better health status.

    7. Patient Global Assessment [Week 1 and Week 48]

      The Patient Global Assessment is two questions which assess the overall health-related quality of life (HRQOL) and symptoms of the patient. Each item is answered on a 15-point Likert scale ranging from 'A very great deal worse' (1) to 'A very great deal better' (15). A higher score indicates that quality of life or symptoms have improved.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    1 Year and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Must have previously completed a romiplostim ITP study

    • Platelet count ≤ 50 x 10 ^9/L

    • Written informed consent

    Exclusion Criteria:
    • Bone marrow stem cell disorder or new active malignancies diagnosed since enrollment in the previous romiplostim ITP study

    • Received any alkylating agents within 4 weeks before screening visit or anticipated use during the time of the proposed study

    • Currently enrolled in or has not yet completed at least 4 weeks since ending device or drug trial(s) (other than the previous romiplostim ITP study), or subject is receiving other investigational agent(s) other than romiplostim

    • Not using adequate contraceptive precautions

    • Not available for follow-up assessments

    • Has any kind of disorder that compromises the ability of the participant to give informed consent and does not have a legally-acceptable representative and/or is unable to comply with study procedures.

    Contacts and Locations

    Locations

    No locations specified.

    Sponsors and Collaborators

    • Amgen

    Investigators

    • Study Director: MD, Amgen

    Study Documents (Full-Text)

    None provided.

    More Information

    Additional Information:

    Publications

    Responsible Party:
    Amgen
    ClinicalTrials.gov Identifier:
    NCT00116688
    Other Study ID Numbers:
    • 20030213
    First Posted:
    Jul 1, 2005
    Last Update Posted:
    Dec 18, 2013
    Last Verified:
    Nov 1, 2013

    Study Results

    Participant Flow

    Recruitment Details Participants were enrolled from 2 August 2004 through 15 April 2009
    Pre-assignment Detail
    Arm/Group Title Romiplostim in Adults Romiplostim in Pediatric Population
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg. Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 µg/kg based on platelet counts.
    Period Title: Overall Study
    STARTED 292 21
    Received Study Medication 291 20
    COMPLETED 200 17
    NOT COMPLETED 92 4

    Baseline Characteristics

    Arm/Group Title Romiplostim in Adults Romiplostim in Pediatric Population Total
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg. Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 µg/kg based on platelet counts. Total of all reporting groups
    Overall Participants 292 21 313
    Age (Years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [Years]
    54.2
    (16.9)
    10.2
    (5.1)
    51.3
    (19.7)
    Sex: Female, Male (Count of Participants)
    Female
    184
    63%
    6
    28.6%
    190
    60.7%
    Male
    108
    37%
    15
    71.4%
    123
    39.3%
    Race/Ethnicity, Customized (Number) [Number]
    Black or African American
    13
    4.5%
    3
    14.3%
    16
    5.1%
    White or Caucasian
    246
    84.2%
    13
    61.9%
    259
    82.7%
    Hispanic or Latino
    21
    7.2%
    4
    19%
    25
    8%
    Asian
    9
    3.1%
    0
    0%
    9
    2.9%
    Japanese
    1
    0.3%
    0
    0%
    1
    0.3%
    American Indian or Alaska Native
    1
    0.3%
    0
    0%
    1
    0.3%
    Native Hawaiian or Other Pacific Islander
    1
    0.3%
    0
    0%
    1
    0.3%
    Other
    0
    0%
    1
    4.8%
    1
    0.3%

    Outcome Measures

    1. Primary Outcome
    Title Number of Participants With Adverse Events
    Description Participants with one or more occurrences of one or more adverse events up to 8 weeks after the end of treatment. Participants with more than one event were only counted once.
    Time Frame Duration of treatment plus 8 weeks (up to 285 weeks)

    Outcome Measure Data

    Analysis Population Description
    Safety Analysis Set, composed of all participants who received at least one dose of romiplostim
    Arm/Group Title Romiplostim in Adults Romiplostim in Pediatric Population
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg. Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 µg/kg based on platelet counts.
    Measure Participants 291 20
    Number [Participants]
    284
    97.3%
    19
    90.5%
    2. Secondary Outcome
    Title Number of Participants With a Platelet Response
    Description Platelet response was defined as having a platelet count of ≥ 50 x 10^9/L at any time on study, excluding platelet counts within 8 weeks after receiving any rescue medications.
    Time Frame Duration of treatment (up to 277 weeks)

    Outcome Measure Data

    Analysis Population Description
    Efficacy Analysis Set, composed of all enrolled participants who received at least one dose of romiplostim
    Arm/Group Title Romiplostim in Adults Romiplostim in Pediatric Population
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg. Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 µg/kg based on platelet counts.
    Measure Participants 291 20
    Number [Participants]
    275
    94.2%
    20
    95.2%
    3. Secondary Outcome
    Title Number of Participants With a Reduction or Discontinuation of Concurrent ITP Therapies
    Description The number of participants with a reduction or discontinuation of concurrent immune (idiopathic) thrombocytopenic purpura (ITP) therapies (corticosteroids, danazol, azathioprine) during the study.
    Time Frame Duration of treatment (up to 277 weeks)

    Outcome Measure Data

    Analysis Population Description
    Subset of Efficacy Analysis Set, composed of all enrolled participants who received at least one dose of romiplostim and with baseline concurrent ITP therapy.
    Arm/Group Title Romiplostim in Adults Romiplostim in Pediatric Population
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg. Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 µg/kg based on platelet counts.
    Measure Participants 37 2
    Number [Participants]
    30
    10.3%
    1
    4.8%
    4. Secondary Outcome
    Title Change From Baseline in ITP Patient Assessment Questionnaire
    Description The ITP Patient Assessment Questionnaire (ITP-PAQ) assesses ITP-specific health-related quality of life (HRQOL). This questionnaire assesses ITP specific health-related quality of life (HRQOL). The questionnaire consists of 44 items and has six domains: These domains assess the impact of ITP on Physical Health, Mental Health, Work, Social Activity, Women's Health and Overall QOL. The impact of ITP on Physical Health consists of four sub-scales, which evaluate ITP related Symptoms, Fatigue, Bother and Activity. The impact of ITP on Mental Health consists of two sub-scales, which evaluate Psychological distress and Fear in a population with ITP. Items are scored from 0-100 with higher scores indicating better HRQOL.
    Time Frame Baseline to Week 48

    Outcome Measure Data

    Analysis Population Description
    Full analysis set with available data. Patient reported outcomes were only analyzed in adult participants.
    Arm/Group Title Romiplostim in Adults
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg.
    Measure Participants 292
    Physical Health Symptoms (N=209)
    4.20
    (13.15)
    Physical Health Fatigue (N=208)
    3.99
    (16.00)
    Physical Health Bother (N=204)
    6.43
    (17.39)
    Physical Health Activity (N=208)
    5.23
    (21.08)
    Emotional Health Psychological (N=208)
    4.01
    (15.81)
    Emotional Health Fear (N=209)
    3.48
    (12.59)
    Overall Quality of Life (N=210)
    8.32
    (19.65)
    Social Quality of Life (N=209)
    3.89
    (13.41)
    Women's Reproductive Health (N=71)
    4.51
    (16.35)
    Work Quality of Life (N=75)
    2.78
    (14.54)
    5. Secondary Outcome
    Title Change From Baseline in Short Form 36 (SF-36)
    Description The SF-36 is a widely used generic health-related quality of life measure. It has 36 questions with 8 domains: Physical Functioning, Role Physical, Bodily Pain, General Health, Vitality, Social Functioning, Role Emotional and Mental Health. Items are scored from 0 to 100 with higher scores indicating better health status.
    Time Frame Baseline to Week 48

    Outcome Measure Data

    Analysis Population Description
    Full analysis set with available data. Patient reported outcomes were only analyzed in adult participants.
    Arm/Group Title Romiplostim in Adults
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg.
    Measure Participants 292
    Physical Functioning (N=206)
    1.38
    (6.34)
    Role-Physical (N=208)
    2.03
    (8.89)
    Bodily Pain (N=206)
    0.94
    (7.99)
    General Health Perception (N=208)
    1.31
    (7.03)
    Vitality (N=208)
    1.68
    (7.47)
    Social Functioning (N=208)
    0.52
    (8.21)
    Role-Emotional (N=205)
    1.75
    (12.22)
    Mental Health Index (N=208)
    0.91
    (7.45)
    Physical Component Summary (N=200)
    1.49
    (6.51)
    Mental Component Summary (N=200)
    1.06
    (8.80)
    6. Secondary Outcome
    Title Change From Baseline in Euroqol-5D (EQ-5D) Index Score
    Description The EQ-5D is a patient-completed, multidimensional measure of health related quality of life. The instrument is applicable to a wide range of health conditions and treatments and results in a single index score and a visual analog scale (VAS) score. The EQ-5D descriptive health profile comprises five dimensions of health (mobility, self-care, usual activities, pain/discomfort, and anxiety/depression). Each dimension comprises three levels (no problems, some/moderate problems, extreme problems). A unique EQ-5D health state is defined by combining one level from each of the five dimensions. EQ-5D index values range from -0.59 to 1.00. Higher EQ-5D Index scores represent better health status.
    Time Frame Baseline to Week 48

    Outcome Measure Data

    Analysis Population Description
    Full analysis set with available data. Patient reported outcomes were only analyzed in adult participants.
    Arm/Group Title Romiplostim in Adults
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg.
    Measure Participants 154
    Mean (Standard Deviation) [scores on a scale]
    0.03
    (0.16)
    7. Secondary Outcome
    Title Change From Baseline in Euroqol-5D (EQ-5D) Visual Analogue Scale (VAS)
    Description The EQ-5D is a patient-completed, multidimensional measure of health related quality of life. The EQ-5D VAS records the respondent's self-rated health status on a vertical graduated (0-100) visual analogue scale. Higher EQ-5D VAS scores represent better health status.
    Time Frame Baseline to Week 48

    Outcome Measure Data

    Analysis Population Description
    Full analysis set with available data. Patient reported outcomes were only analyzed in adult participants.
    Arm/Group Title Romiplostim in Adults
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg.
    Measure Participants 150
    Mean (Standard Deviation) [scores on a scale]
    6.05
    (14.85)
    8. Secondary Outcome
    Title Patient Global Assessment
    Description The Patient Global Assessment is two questions which assess the overall health-related quality of life (HRQOL) and symptoms of the patient. Each item is answered on a 15-point Likert scale ranging from 'A very great deal worse' (1) to 'A very great deal better' (15). A higher score indicates that quality of life or symptoms have improved.
    Time Frame Week 1 and Week 48

    Outcome Measure Data

    Analysis Population Description
    Full analysis set with available data. Patient reported outcomes were only analyzed in adult participants.
    Arm/Group Title Romiplostim in Adults
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg.
    Measure Participants 292
    Week 1 (N=271)
    7.61
    (2.02)
    Week 48 (N=216)
    8.18
    (1.78)

    Adverse Events

    Time Frame For adult participants the average duration was 110 weeks; for pediatric participants the average duration is 82 weeks
    Adverse Event Reporting Description The table of Other Adverse Events summarizes the most frequent non-serious occurrences of adverse events. One adult patient and one pediatric patient did not receive the investigational product and were not included in the adverse event table.
    Arm/Group Title Romiplostim in Adults Romiplostim in Pediatric Population
    Arm/Group Description Romiplostim administered to adult participants subcutaneously weekly at doses up to 30 µg/kg based on platelet counts. After Amendment 1 the maximum weekly dose was reduced to 15 µg/kg, and after Amendment 2 the maximum weekly dose was reduced to 10 µg/kg. However, participants enrolled prior to Amendment 2 who were receiving >10 µg/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 µg/kg. Romiplostim administered to pediatric participants subcutaneously weekly at doses up to 10 µg/kg based on platelet counts.
    All Cause Mortality
    Romiplostim in Adults Romiplostim in Pediatric Population
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total / (NaN) / (NaN)
    Serious Adverse Events
    Romiplostim in Adults Romiplostim in Pediatric Population
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 117/291 (40.2%) 2/20 (10%)
    Blood and lymphatic system disorders
    Anaemia 3/291 (1%) 0/20 (0%)
    Bicytopenia 1/291 (0.3%) 0/20 (0%)
    Bone marrow disorder 4/291 (1.4%) 0/20 (0%)
    Bone marrow reticulin fibrosis 1/291 (0.3%) 0/20 (0%)
    Evans syndrome 1/291 (0.3%) 0/20 (0%)
    Haemolytic anaemia 1/291 (0.3%) 0/20 (0%)
    Idiopathic thrombocytopenic purpura 7/291 (2.4%) 1/20 (5%)
    Leukocytosis 1/291 (0.3%) 0/20 (0%)
    Neutropenia 1/291 (0.3%) 0/20 (0%)
    Thrombocytopenia 23/291 (7.9%) 0/20 (0%)
    Cardiac disorders
    Acute myocardial infarction 3/291 (1%) 0/20 (0%)
    Angina unstable 2/291 (0.7%) 0/20 (0%)
    Atrial fibrillation 3/291 (1%) 0/20 (0%)
    Cardiac arrest 1/291 (0.3%) 0/20 (0%)
    Cardiac failure 4/291 (1.4%) 0/20 (0%)
    Cardiac failure congestive 5/291 (1.7%) 0/20 (0%)
    Cardiac tamponade 1/291 (0.3%) 0/20 (0%)
    Coronary artery disease 2/291 (0.7%) 0/20 (0%)
    Myocardial infarction 5/291 (1.7%) 0/20 (0%)
    Pericardial haemorrhage 1/291 (0.3%) 0/20 (0%)
    Trifascicular block 1/291 (0.3%) 0/20 (0%)
    Congenital, familial and genetic disorders
    Atrial septal defect 1/291 (0.3%) 0/20 (0%)
    Ear and labyrinth disorders
    Vertigo 2/291 (0.7%) 0/20 (0%)
    Vestibular disorder 1/291 (0.3%) 0/20 (0%)
    Eye disorders
    Blindness 1/291 (0.3%) 0/20 (0%)
    Conjunctival haemorrhage 1/291 (0.3%) 0/20 (0%)
    Papilloedema 1/291 (0.3%) 0/20 (0%)
    Gastrointestinal disorders
    Abdominal distension 1/291 (0.3%) 0/20 (0%)
    Abdominal pain 2/291 (0.7%) 0/20 (0%)
    Abdominal pain lower 1/291 (0.3%) 0/20 (0%)
    Abdominal pain upper 1/291 (0.3%) 0/20 (0%)
    Anal fistula 1/291 (0.3%) 0/20 (0%)
    Ascites 1/291 (0.3%) 0/20 (0%)
    Colitis 2/291 (0.7%) 0/20 (0%)
    Colitis ischaemic 1/291 (0.3%) 0/20 (0%)
    Diarrhoea 1/291 (0.3%) 0/20 (0%)
    Dyspepsia 1/291 (0.3%) 0/20 (0%)
    Femoral hernia 1/291 (0.3%) 0/20 (0%)
    Gastrointestinal haemorrhage 4/291 (1.4%) 0/20 (0%)
    Gingival bleeding 2/291 (0.7%) 0/20 (0%)
    Haematemesis 1/291 (0.3%) 0/20 (0%)
    Irritable bowel syndrome 1/291 (0.3%) 0/20 (0%)
    Mouth cyst 1/291 (0.3%) 0/20 (0%)
    Mouth haemorrhage 1/291 (0.3%) 0/20 (0%)
    Mouth ulceration 1/291 (0.3%) 0/20 (0%)
    Nausea 1/291 (0.3%) 0/20 (0%)
    Periodontitis 1/291 (0.3%) 0/20 (0%)
    Rectal haemorrhage 2/291 (0.7%) 0/20 (0%)
    Small intestinal obstruction 1/291 (0.3%) 0/20 (0%)
    Tooth impacted 1/291 (0.3%) 0/20 (0%)
    Tooth loss 1/291 (0.3%) 0/20 (0%)
    Upper gastrointestinal haemorrhage 1/291 (0.3%) 0/20 (0%)
    Vomiting 1/291 (0.3%) 0/20 (0%)
    General disorders
    Adverse drug reaction 1/291 (0.3%) 0/20 (0%)
    Asthenia 1/291 (0.3%) 0/20 (0%)
    Chest pain 3/291 (1%) 0/20 (0%)
    Death 1/291 (0.3%) 0/20 (0%)
    Fatigue 1/291 (0.3%) 0/20 (0%)
    Generalised oedema 1/291 (0.3%) 0/20 (0%)
    Hernia 1/291 (0.3%) 0/20 (0%)
    Hernia obstructive 2/291 (0.7%) 0/20 (0%)
    Hernia pain 1/291 (0.3%) 0/20 (0%)
    Hyperpyrexia 1/291 (0.3%) 0/20 (0%)
    Mechanical complication of implant 1/291 (0.3%) 0/20 (0%)
    Oedema peripheral 1/291 (0.3%) 0/20 (0%)
    Pyrexia 4/291 (1.4%) 0/20 (0%)
    Hepatobiliary disorders
    Biliary colic 1/291 (0.3%) 0/20 (0%)
    Cholecystitis 2/291 (0.7%) 0/20 (0%)
    Cholecystitis acute 1/291 (0.3%) 0/20 (0%)
    Cholelithiasis 3/291 (1%) 0/20 (0%)
    Hepatic failure 2/291 (0.7%) 0/20 (0%)
    Hepatic steatosis 1/291 (0.3%) 0/20 (0%)
    Hepatitis 1/291 (0.3%) 0/20 (0%)
    Portal vein thrombosis 1/291 (0.3%) 0/20 (0%)
    Infections and infestations
    Anal abscess 1/291 (0.3%) 0/20 (0%)
    Appendicitis 2/291 (0.7%) 0/20 (0%)
    Bacteraemia 1/291 (0.3%) 0/20 (0%)
    Bronchitis 3/291 (1%) 0/20 (0%)
    Candidiasis 1/291 (0.3%) 0/20 (0%)
    Catheter bacteraemia 1/291 (0.3%) 0/20 (0%)
    Catheter related infection 2/291 (0.7%) 0/20 (0%)
    Cellulitis 3/291 (1%) 0/20 (0%)
    Device related infection 1/291 (0.3%) 0/20 (0%)
    Epiglottitis 1/291 (0.3%) 0/20 (0%)
    Gastroenteritis 1/291 (0.3%) 0/20 (0%)
    Haematoma infection 1/291 (0.3%) 0/20 (0%)
    Influenza 0/291 (0%) 1/20 (5%)
    Klebsiella sepsis 1/291 (0.3%) 0/20 (0%)
    Localised infection 1/291 (0.3%) 0/20 (0%)
    Meningitis listeria 1/291 (0.3%) 0/20 (0%)
    Nasopharyngitis 1/291 (0.3%) 0/20 (0%)
    Parotitis 1/291 (0.3%) 0/20 (0%)
    Pharyngitis streptococcal 0/291 (0%) 1/20 (5%)
    Pneumococcal sepsis 1/291 (0.3%) 0/20 (0%)
    Pneumonia 8/291 (2.7%) 0/20 (0%)
    Pneumonia streptococcal 1/291 (0.3%) 0/20 (0%)
    Post procedural cellulitis 1/291 (0.3%) 0/20 (0%)
    Progressive multifocal leukoencephalopathy 1/291 (0.3%) 0/20 (0%)
    Sepsis 1/291 (0.3%) 0/20 (0%)
    Thrombophlebitis septic 1/291 (0.3%) 0/20 (0%)
    Tooth abscess 1/291 (0.3%) 0/20 (0%)
    Urosepsis 2/291 (0.7%) 0/20 (0%)
    Injury, poisoning and procedural complications
    Arteriovenous fistula site complication 1/291 (0.3%) 0/20 (0%)
    Contusion 1/291 (0.3%) 0/20 (0%)
    Fractured sacrum 1/291 (0.3%) 0/20 (0%)
    Head injury 1/291 (0.3%) 0/20 (0%)
    Hip fracture 2/291 (0.7%) 0/20 (0%)
    Humerus fracture 1/291 (0.3%) 0/20 (0%)
    Incisional hernia 1/291 (0.3%) 0/20 (0%)
    Medical device complication 1/291 (0.3%) 0/20 (0%)
    Meniscus lesion 1/291 (0.3%) 0/20 (0%)
    Pelvic fracture 1/291 (0.3%) 0/20 (0%)
    Subdural haemorrhage 1/291 (0.3%) 0/20 (0%)
    Upper limb fracture 1/291 (0.3%) 0/20 (0%)
    Wound 1/291 (0.3%) 0/20 (0%)
    Investigations
    Megakaryocytes increased 1/291 (0.3%) 0/20 (0%)
    Platelet count decreased 3/291 (1%) 0/20 (0%)
    Platelet count increased 2/291 (0.7%) 0/20 (0%)
    Metabolism and nutrition disorders
    Decreased appetite 1/291 (0.3%) 0/20 (0%)
    Dehydration 4/291 (1.4%) 0/20 (0%)
    Hyperkalaemia 2/291 (0.7%) 0/20 (0%)
    Hypokalaemia 1/291 (0.3%) 0/20 (0%)
    Musculoskeletal and connective tissue disorders
    Arthritis 1/291 (0.3%) 0/20 (0%)
    Intervertebral disc protrusion 1/291 (0.3%) 0/20 (0%)
    Osteoarthritis 3/291 (1%) 0/20 (0%)
    Osteonecrosis 1/291 (0.3%) 0/20 (0%)
    Pain in extremity 1/291 (0.3%) 0/20 (0%)
    Rhabdomyolysis 1/291 (0.3%) 0/20 (0%)
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Breast cancer 1/291 (0.3%) 0/20 (0%)
    Chronic lymphocytic leukaemia 1/291 (0.3%) 0/20 (0%)
    Colon cancer recurrent 1/291 (0.3%) 0/20 (0%)
    Hepatic neoplasm malignant 2/291 (0.7%) 0/20 (0%)
    Lung neoplasm malignant 1/291 (0.3%) 0/20 (0%)
    Lymphoma 1/291 (0.3%) 0/20 (0%)
    Metastases to central nervous system 1/291 (0.3%) 0/20 (0%)
    Multiple myeloma 1/291 (0.3%) 0/20 (0%)
    Myelofibrosis 1/291 (0.3%) 0/20 (0%)
    Neoplasm of orbit 1/291 (0.3%) 0/20 (0%)
    Renal cell carcinoma 1/291 (0.3%) 0/20 (0%)
    Transitional cell carcinoma 1/291 (0.3%) 0/20 (0%)
    Nervous system disorders
    Cerebrovascular accident 2/291 (0.7%) 0/20 (0%)
    Complex regional pain syndrome 1/291 (0.3%) 0/20 (0%)
    Convulsion 2/291 (0.7%) 0/20 (0%)
    Headache 1/291 (0.3%) 0/20 (0%)
    Intracranial aneurysm 1/291 (0.3%) 0/20 (0%)
    Loss of consciousness 1/291 (0.3%) 0/20 (0%)
    Migraine 1/291 (0.3%) 0/20 (0%)
    Multiple sclerosis relapse 1/291 (0.3%) 0/20 (0%)
    Presyncope 1/291 (0.3%) 0/20 (0%)
    Syncope 2/291 (0.7%) 0/20 (0%)
    Transient ischaemic attack 2/291 (0.7%) 0/20 (0%)
    Transverse sinus thrombosis 1/291 (0.3%) 0/20 (0%)
    Pregnancy, puerperium and perinatal conditions
    Abortion spontaneous 1/291 (0.3%) 0/20 (0%)
    Psychiatric disorders
    Agitation 1/291 (0.3%) 0/20 (0%)
    Anxiety 2/291 (0.7%) 0/20 (0%)
    Confusional state 1/291 (0.3%) 0/20 (0%)
    Mental status changes 2/291 (0.7%) 0/20 (0%)
    Suicidal ideation 1/291 (0.3%) 0/20 (0%)
    Renal and urinary disorders
    Renal failure 3/291 (1%) 0/20 (0%)
    Renal failure acute 2/291 (0.7%) 0/20 (0%)
    Renal failure chronic 1/291 (0.3%) 0/20 (0%)
    Urinary bladder polyp 1/291 (0.3%) 0/20 (0%)
    Urinary retention 1/291 (0.3%) 0/20 (0%)
    Reproductive system and breast disorders
    Menorrhagia 1/291 (0.3%) 0/20 (0%)
    Metrorrhagia 1/291 (0.3%) 0/20 (0%)
    Ovarian cyst 1/291 (0.3%) 0/20 (0%)
    Vaginal haemorrhage 2/291 (0.7%) 0/20 (0%)
    Respiratory, thoracic and mediastinal disorders
    Acute pulmonary oedema 1/291 (0.3%) 0/20 (0%)
    Asthma 1/291 (0.3%) 0/20 (0%)
    Cough 1/291 (0.3%) 0/20 (0%)
    Dyspnoea 4/291 (1.4%) 0/20 (0%)
    Epistaxis 3/291 (1%) 1/20 (5%)
    Haemoptysis 1/291 (0.3%) 0/20 (0%)
    Pleuritic pain 1/291 (0.3%) 0/20 (0%)
    Pulmonary embolism 1/291 (0.3%) 0/20 (0%)
    Pulmonary haemorrhage 1/291 (0.3%) 0/20 (0%)
    Respiratory arrest 1/291 (0.3%) 0/20 (0%)
    Respiratory failure 2/291 (0.7%) 0/20 (0%)
    Skin and subcutaneous tissue disorders
    Blister 1/291 (0.3%) 0/20 (0%)
    Ecchymosis 1/291 (0.3%) 0/20 (0%)
    Petechiae 2/291 (0.7%) 0/20 (0%)
    Psoriasis 1/291 (0.3%) 0/20 (0%)
    Purpura 1/291 (0.3%) 0/20 (0%)
    Rash 2/291 (0.7%) 0/20 (0%)
    Systemic lupus erythematosus rash 1/291 (0.3%) 0/20 (0%)
    Urticaria 1/291 (0.3%) 0/20 (0%)
    Surgical and medical procedures
    Cholecystectomy 1/291 (0.3%) 0/20 (0%)
    Elective surgery 1/291 (0.3%) 0/20 (0%)
    Knee arthroplasty 2/291 (0.7%) 0/20 (0%)
    Plastic surgery 1/291 (0.3%) 0/20 (0%)
    Skin cosmetic procedure 1/291 (0.3%) 0/20 (0%)
    Stent placement 1/291 (0.3%) 0/20 (0%)
    Vascular disorders
    Aortic aneurysm 1/291 (0.3%) 0/20 (0%)
    Deep vein thrombosis 2/291 (0.7%) 0/20 (0%)
    Femoral arterial stenosis 1/291 (0.3%) 0/20 (0%)
    Haematoma 1/291 (0.3%) 0/20 (0%)
    Haemorrhage 1/291 (0.3%) 0/20 (0%)
    Phlebitis 1/291 (0.3%) 0/20 (0%)
    Subgaleal haematoma 1/291 (0.3%) 0/20 (0%)
    Thrombosis 1/291 (0.3%) 0/20 (0%)
    Other (Not Including Serious) Adverse Events
    Romiplostim in Adults Romiplostim in Pediatric Population
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 270/291 (92.8%) 18/20 (90%)
    Blood and lymphatic system disorders
    Anaemia 17/291 (5.8%) 1/20 (5%)
    Idiopathic thrombocytopenic purpura 29/291 (10%) 2/20 (10%)
    Gastrointestinal disorders
    Abdominal discomfort 17/291 (5.8%) 1/20 (5%)
    Abdominal pain 33/291 (11.3%) 3/20 (15%)
    Abdominal pain upper 21/291 (7.2%) 4/20 (20%)
    Constipation 26/291 (8.9%) 1/20 (5%)
    Diarrhoea 72/291 (24.7%) 2/20 (10%)
    Dyspepsia 19/291 (6.5%) 0/20 (0%)
    Gingival bleeding 43/291 (14.8%) 5/20 (25%)
    Mouth haemorrhage 21/291 (7.2%) 4/20 (20%)
    Mouth ulceration 4/291 (1.4%) 2/20 (10%)
    Nausea 69/291 (23.7%) 4/20 (20%)
    Toothache 17/291 (5.8%) 1/20 (5%)
    Vomiting 46/291 (15.8%) 7/20 (35%)
    General disorders
    Asthenia 22/291 (7.6%) 0/20 (0%)
    Chest pain 16/291 (5.5%) 1/20 (5%)
    Chills 12/291 (4.1%) 2/20 (10%)
    Fatigue 93/291 (32%) 7/20 (35%)
    Injection site haematoma 15/291 (5.2%) 0/20 (0%)
    Oedema peripheral 41/291 (14.1%) 0/20 (0%)
    Pain 32/291 (11%) 4/20 (20%)
    Pyrexia 36/291 (12.4%) 9/20 (45%)
    Immune system disorders
    Seasonal allergy 16/291 (5.5%) 1/20 (5%)
    Infections and infestations
    Bronchitis 22/291 (7.6%) 1/20 (5%)
    Ear infection 11/291 (3.8%) 2/20 (10%)
    Gastroenteritis 13/291 (4.5%) 2/20 (10%)
    Influenza 23/291 (7.9%) 0/20 (0%)
    Nasopharyngitis 100/291 (34.4%) 5/20 (25%)
    Sinusitis 38/291 (13.1%) 1/20 (5%)
    Upper respiratory tract infection 76/291 (26.1%) 10/20 (50%)
    Urinary tract infection 36/291 (12.4%) 0/20 (0%)
    Viral infection 5/291 (1.7%) 2/20 (10%)
    Viral upper respiratory tract infection 7/291 (2.4%) 3/20 (15%)
    Injury, poisoning and procedural complications
    Animal bite 3/291 (1%) 2/20 (10%)
    Arthropod bite 6/291 (2.1%) 2/20 (10%)
    Contusion 88/291 (30.2%) 8/20 (40%)
    Excoriation 10/291 (3.4%) 3/20 (15%)
    Fall 19/291 (6.5%) 0/20 (0%)
    Joint sprain 11/291 (3.8%) 2/20 (10%)
    Procedural pain 17/291 (5.8%) 2/20 (10%)
    Skin laceration 18/291 (6.2%) 0/20 (0%)
    Musculoskeletal and connective tissue disorders
    Arthralgia 69/291 (23.7%) 5/20 (25%)
    Back pain 54/291 (18.6%) 1/20 (5%)
    Joint swelling 16/291 (5.5%) 0/20 (0%)
    Muscle spasms 28/291 (9.6%) 1/20 (5%)
    Musculoskeletal pain 29/291 (10%) 1/20 (5%)
    Myalgia 35/291 (12%) 3/20 (15%)
    Pain in extremity 55/291 (18.9%) 2/20 (10%)
    Nervous system disorders
    Dizziness 51/291 (17.5%) 2/20 (10%)
    Headache 109/291 (37.5%) 9/20 (45%)
    Migraine 15/291 (5.2%) 1/20 (5%)
    Paraesthesia 28/291 (9.6%) 0/20 (0%)
    Psychiatric disorders
    Anxiety 21/291 (7.2%) 0/20 (0%)
    Depression 19/291 (6.5%) 0/20 (0%)
    Insomnia 41/291 (14.1%) 0/20 (0%)
    Renal and urinary disorders
    Dysuria 15/291 (5.2%) 0/20 (0%)
    Respiratory, thoracic and mediastinal disorders
    Cough 70/291 (24.1%) 9/20 (45%)
    Dyspnoea 22/291 (7.6%) 2/20 (10%)
    Epistaxis 73/291 (25.1%) 5/20 (25%)
    Nasal congestion 30/291 (10.3%) 6/20 (30%)
    Oropharyngeal blistering 20/291 (6.9%) 0/20 (0%)
    Oropharyngeal pain 50/291 (17.2%) 6/20 (30%)
    Rhinorrhoea 26/291 (8.9%) 5/20 (25%)
    Skin and subcutaneous tissue disorders
    Blood blister 19/291 (6.5%) 0/20 (0%)
    Ecchymosis 25/291 (8.6%) 1/20 (5%)
    Petechiae 53/291 (18.2%) 9/20 (45%)
    Pruritus 23/291 (7.9%) 0/20 (0%)
    Rash 44/291 (15.1%) 5/20 (25%)
    Scab 0/291 (0%) 2/20 (10%)
    Skin lesion 18/291 (6.2%) 1/20 (5%)
    Vascular disorders
    Haematoma 37/291 (12.7%) 1/20 (5%)
    Hypertension 17/291 (5.8%) 0/20 (0%)

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    The Clinical Trial Agreement generally does not restrict an investigator's discussion of trial results aftercompletion. The Agreement permits Amgen a limited period of time to review material discussing trial results (typically up to 45 days and possible extension). Amgen may remove confidential information, but authors have final control and approval of publication content. For multicenter studies, the investigator agrees not to publish any results before the first multi-center publication.

    Results Point of Contact

    Name/Title Study Director
    Organization Amgen Inc.
    Phone 866-572-6436
    Email
    Responsible Party:
    Amgen
    ClinicalTrials.gov Identifier:
    NCT00116688
    Other Study ID Numbers:
    • 20030213
    First Posted:
    Jul 1, 2005
    Last Update Posted:
    Dec 18, 2013
    Last Verified:
    Nov 1, 2013