E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
Essential thrombocythaemia (ET) |
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MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 7.1 |
E.1.2 | Level | LLT |
E.1.2 | Classification code | 10015493 |
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E.1.3 | Condition being studied is a rare disease | Yes |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
To compare the safety of anagrelide and hydroxyurea in short and long term usage of up to three years with particular reference to cardiovascular safety (as assessed by echocardiography). |
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E.2.2 | Secondary objectives of the trial |
To compare the efficacy of anagrelide and hydroxyurea in terms of the platelet count after 6 months of treatment.
To compare the efficacy of anagrelide and hydroxyurea in terms of the platelet count after 3 months of treatment.
To compare the efficacy of anagrelide and hydroxyurea in terms of the number of patients achieving a complete response.
To compare the cytoreductive impact of anagrelide and hydroxyurea on white blood cell and red blood cell lines.
To investigate the tolerability of anagrelide and hydroyxurea in short and long term usage of up to three years.
To investigate the effects of anagrelide and hydroxyurea on incidence of disease related thrombotic and haemorrhagic events.
To compare the average time to response following treatment with anagrelide or hydroxyurea. |
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E.2.3 | Trial contains a sub-study | Information not present in EudraCT |
E.3 | Principal inclusion criteria |
Patients must have given written informed consent to participate in the study. Patients must be aged ≥18 years Previously untreated with a cytoreductive agent. Confirmed diagnosis of ET – High Risk Profile Satisfactory Medical assessment with no clinically significant and relevant abnormalities. If patients are female and of childbearing potential they must have a negative serum pregnancy test prior to entering the study and must agree to use effective birth control for the duration of the study. Pregnant or lactating women are excluded from participation. Patients must be able willing and likely to comply with the study procedures and restrictions. |
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E.4 | Principal exclusion criteria |
Patients with diagnosis of any other myeloproliferative disorder (MPD) Any known cause for a secondary thrombocytosis. Previous or current treatment with cytoreductive therapy. Anticoagulant therapies. Anti-aggregant therapies, including aspirin. (Aspirin or other anti-aggregant therapy is allowed up to the point of randomisation). Known or suspected intolerance to the study materials. Known or suspected Heart Disease Left Ventricular Ejection Fraction (LVEF) <55%. Treatment with any medications known to alter ventricular ejection fraction. Life threatening malignancy or neoplasia which in the opinion of the investigator is unrelated to thrombocythaemia, Severe renal impairment defined as creatinine clearance <30ml/min, or severe hepatic impairment defined as elevated transaminases >5xULN. Clinically significant abnormal laboratory values (excluding markers of essential thrombocythaemia) will exclude the patient from the study as will known infection with hepatitis B, hepatitis C or HIV. Patients with a history of drug/alcohol abuse (within the previous 2 years) Patients must not have participated in another investigational study within 30 days prior to enrolment or for a longer duration if specified in local regulations. |
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E.5 End points |
E.5.1 | Primary end point(s) |
The primary outcome for this study is the safety measurement LVEF. LVEF will be measured at predefined intervals (pre-treatment and Months 1, 2, 3, 6, 9, 12, 18, 24, 30 and 36) during the study and the response (slope) in LVEF for each patient will be obtained using linear regression. LVEF will be modelled as a linear function of time with a separate slope and intercept for each patient.
The mean slope for each treatment group, the difference in the mean slopes between the two treatment groups, and the associated two-sided 95% confidence intervals will be presented. If the 95% CI for difference lies entirely below 2%/year then it will be concluded that the effect of anagrelide on LVEF is no worse than that observed for hydroxyurea. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | Information not present in EudraCT |
E.6.2 | Prophylaxis | Information not present in EudraCT |
E.6.3 | Therapy | Information not present in EudraCT |
E.6.4 | Safety | Yes |
E.6.5 | Efficacy | Yes |
E.6.6 | Pharmacokinetic | Information not present in EudraCT |
E.6.7 | Pharmacodynamic | Information not present in EudraCT |
E.6.8 | Bioequivalence | Information not present in EudraCT |
E.6.9 | Dose response | Information not present in EudraCT |
E.6.10 | Pharmacogenetic | Information not present in EudraCT |
E.6.11 | Pharmacogenomic | Information not present in EudraCT |
E.6.12 | Pharmacoeconomic | Information not present in EudraCT |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | Information not present in EudraCT |
E.7.1.1 | First administration to humans | Information not present in EudraCT |
E.7.1.2 | Bioequivalence study | Information not present in EudraCT |
E.7.1.3 | Other | Information not present in EudraCT |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | Information not present in EudraCT |
E.7.3 | Therapeutic confirmatory (Phase III) | Yes |
E.7.4 | Therapeutic use (Phase IV) | Information not present in EudraCT |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | Yes |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | No |
E.8.1.5 | Parallel group | Yes |
E.8.1.6 | Cross over | No |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | Yes |
E.8.2.2 | Placebo | No |
E.8.2.3 | Other | No |
E.8.3 |
The trial involves single site in the Member State concerned
| No |
E.8.4 | The trial involves multiple sites in the Member State concerned | Yes |
E.8.5 | The trial involves multiple Member States | Yes |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | Information not present in EudraCT |
E.8.7 | Trial has a data monitoring committee | Information not present in EudraCT |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 6 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | |
E.8.9.2 | In all countries concerned by the trial years | 6 |
E.8.9.2 | In all countries concerned by the trial months | 0 |