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A phase III, randomized, multicenter, subject- and sponsor-blinded, placebo controlled study to compare the efficacy and safety of “Anagrelide retard” versus placebo in “at risk” subjects with Essential Thrombocythaemia

A phase III, randomized, multicenter, subject- and sponsor-blinded, placebo controlled study to compare the efficacy and safety of “Anagrelide retard” versus placebo in “at risk” subjects with Essential Thrombocythaemia - ARETA study

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2009-017095-24-AT
Enrollment
240
Registered
2010-02-10
Start date
2010-02-17
Completion date
Unknown
Last updated
2015-01-19

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

Conditions

male and female "at risk" subjects with Essential Thrombocythaemia MedDRA version: 17.1 Level: PT Classification code 10015493 Term: Essential thrombocythaemia System Organ Class: 10029104 - Neoplasms benign, malignant and unspecified (incl cysts and polyps)

Interventions

Product Name: Anagrelide retard 2mg tablets Product Code: not applicable Pharmaceutical Form: Modified-release tablet INN or Proposed INN: Anagrelide hydrochloride monohydrate CAS Number: 58579-51-4 C

Sponsors

AOP Orphan Pharmaceuticals AG
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: • Willing and able to give written informed consent prior to any study specific procedures and able to comply with this protocol • Male or female subjects aged between 18 and 60 years, • Confirmed diagnosis of ET according to WHO-criteria (2008) including assessment of JAK-2 status. • Presence of predisposing risk factors for ET related events confirmed by clinical or laboratory results: - Platelet count 3 years (Diagnosis of ET has to be at least 3 years ago and confirmed at time of screening) or - Subjects with ONE of the following risk factors for thrombotic complications: a) JAK- 2 positivity, b) Protein C and/or Protein S deficiency, c) Antithrombin III deficiency, d) Factor V Leiden or Prothrombin mutation, e) Cardiovascular risk factors: Essential hypertension; Smoking (>5 cigarettes/d), Obesity (BMI>30), Cholesterol (HDL/LDL ratio =65 years) no F.1.3.1 Number of subjects for this age range 0

Exclusion criteria

Exclusion criteria: • Diagnosis of any other myeloproliferative disorder • High-risk status (age > 60 years, platelet count = 1.000 G/L, increase of platelet count > 300 G/L within 3 month, history of thrombotic/haemorhagic or ischemic complications). • Any known cause for a secondary thrombocytosis • Previous or current treatment of ET with cytoreductive therapy • Diagnosis of any malignancy, apart from ET, within the last 3 years • Known or suspected intolerance to the investigational products • Known or suspected congestive heart failure • WBC = 15 G/L • Severe renal impairment (creatinine clearance 5 times normal) • Clinically significant abnormal laboratory values (excluding markers of essential thrombocythaemia) • Poorly controlled diabetes mellitus • Infection with hepatitis B, hepatitis C or HIV • Subjects with a history of drug/alcohol abuse (within the previous 2 years) • Participation in another investigational study within 6 months prior to enrolment or for a longer duration if specified in local regulations • Women of childbearing potential with inadequate contraception • Pregnant or lactating women (pregnancy test to be assessed within 7 days prior to study treatment start) • Any significant psychiatric disorder that, in the opinion of the investigator, might prohibit the understanding and giving of informed consent or that might prevent the subject from completing the trial.

Design outcomes

Primary

MeasureTime frame
Main Objective: To determine whether "Anagrelide retard" compared to placebo will reduce the rate of ET-related complications in subjects with potential risk for ET-related Events;Secondary Objective: to assess the effect of "Anagrelide retard" compared to placebo on the following: - reduction of platelet count - response rates - change to "high risk status" - cardiovascular safety - Quality of Life;Primary end point(s): Time to the 1st clinically significant ET related event;Timepoint(s) of evaluation of this end point: Assessed at each visit during 12 months of primary trial and for up to 3 years in extensions study.

Secondary

MeasureTime frame
Secondary end point(s): Efficacy - reduction of platelet counts - occurrence of change to “high risk” status (i.e. platelets > 1.000 G/L or occurrence of an ET related event) - number of subjects achieving a complete response Safety - Adverse Events - cardiovascular safety (assessed by ECG, ECHO, NT-proBNP or BNP) Quality of Life: SF-36;Timepoint(s) of evaluation of this end point: All Secondary endpoints: Assessed at each visit during 12 months of primary trial and for up to 3 years in extensions study. except cardiovascular safety (assessed by ECG, ECHO, NT-proBNP or BNP): Assessed at screening, month 6 and month 12. ECH & ECG are also assessed every three months for a maximum of 3 years extension study Quality of Life: SF-36 assessed at baseline, month 6 and month 12

Countries

Austria, Bulgaria, Croatia, Germany, Hungary, Israel, Lithuania, Poland, Romania, Russian Federation, Serbia, Slovakia, Slovenia, Turkey, Ukraine

Contacts

Public ContactMag. Petra Merz

AOP Orphan Pharmaceuticals AG

petra.merz@aoporphan.com00431503 72 44 919

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026