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Anagrelide

Phase 3

Essential Thrombocythemia (ET) | Small molecule | Hematology |Takeda Pharmaceutical Company Limited|Last Updated: Jun 29, 2021

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment53

FDA Designations

No designations recorded

Clinical trial landscape

Anagrelide · 3 trials · 3 indications

Phase 3 1Phase 2 1Phase 1 1
NCT01214915Effect of SPD422 on Platelet Lowering and Safety in Japanese Adults With At Risk Essential ThrombocythaemiaEssential Thrombocythemia (ET)
COMPLETED53 Analytics
PHASE3COMPLETED
Effect of SPD422 on Platelet Lowering and Safety in Japanese Adults With At Risk Essential Thrombocythaemia
Essential Thrombocythemia (ET)Unlock trial analytics

Study Endpoints

Primary Endpoints

Percentage of Subjects Who Responded in Platelet Count
12 months

A response was defined as platelet counts to \<600x10\^9/L across consecutive visits for at least 4 weeks following at least 3 months of treatment.

Maximum Plasma Concentration (Cmax) of Agrylin
over 1 day
Time of Maximum Plasma Concentration (Tmax) of Agrylin
over 1 day
Area Under the Steady-state Plasma Concentration-time Curve (AUC) of Agrylin
over 1 day
Terminal Half-life (T 1/2) of Agrylin
over 1 day
Total Clearance (CL/F) of Agrylin
over 1 day
Volume of Distribution (Vz/F) of Agrylin
over 1 day
Cmax of Active Metabolite
over 1 day

An active metabolite has therapeutic activity similar to the parent compound and must be considered in therapeutic pharmacokinetics.

Tmax of Active Metabolite
over 1 day
AUC of Active Metabolite
over 1 day
T 1/2 of Active Metabolite
over 1 day
CL/F of Active Metabolite
over 1 day
Vz/F of Active Metabolite
over 1 day
Mean Difference Changes From Baseline Versus Placebo in QTcNi Intervals From Time-Matched Analysis by Largest Time Point
Over 12 hours post-dose

QT interval corrected for heart rate using the subject-specific method (QTcNi) at the subject-specific time of maximum plasma concentration. The QT interval is the time it takes for the ventricles of the heart to contract and relax. Data were subtracted from the placebo value. The largest time point refers to the estimated largest mean difference between each treatment and placebo among all time points. Values for different treatments can come from different time points.

Mean Difference Changes From Baseline Versus Placebo in Heart Rate From Time-Matched Analysis by Largest Time Point
Over 12 hours post-dose

The largest time point refers to the estimated largest mean difference between each treatment and placebo among all time points. Values for different treatments can come from different time points.

Mean Difference Changes From Baseline Versus Placebo in QTcF Intervals From Time-Matched Analysis by Largest Time Point
Over 12 hours post-dose

QT interval corrected for heart rate using Fridericia's method (QTcF) at the subject-specific time of maximum plasma concentration. The QT interval is the time it takes for the ventricles of the heart to contract and relax. Data were subtracted from the placebo value. The largest time point refers to the estimated largest mean difference between each treatment and placebo among all time points. Values for different treatments can come from different time points.

Mean Difference Changes From Baseline Versus Placebo in QTcB Intervals From Time-Matched Analysis by Largest Time Point
Over 12 hours post-dose

QT interval corrected for heart rate using Bazett's method (QTcB) at the subject-specific time of maximum plasma concentration. The QT interval is the time it takes for the ventricles of the heart to contract and relax. Data were subtracted from the placebo value. The largest time point refers to the estimated largest mean difference between each treatment and placebo among all time points. Values for different treatments can come from different time points.

Mean Difference Changes From Baseline Versus Placebo in QT Intervals From Time-Matched Analysis by Largest Time Point
Over 12 hours post-dose

The QT interval is the time it takes for the ventricles of the heart to contract and relax. Data were subtracted from the placebo value. The largest time point refers to the estimated largest mean difference between each treatment and placebo among all time points. Values for different treatments can come from different time points.

Secondary Endpoints

Percentage of Subjects With at Least 50% Reduction in Platelet Count
12 months
Percentage of Subjects With Normalization in Platelet Count
12 months
Percentage of Subjects Who Responded in Platelet Count Whose Baseline Platelet Count Was ≥600x10^9/L
12 months
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Study Design & Arms

AllocationNA
MaskingNONE
ModelSINGLE_GROUP
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Anagrelide HydrochlorideEXPERIMENTAL -
Younger Participants (18-50 years)EXPERIMENTAL -
Elderly Participants (≥65 years)EXPERIMENTAL -
Anagrelide Therapeutic (0.5 mg)EXPERIMENTAL -
Anagrelide Supratherapeutic (2.5 mg)EXPERIMENTAL -
MoxifloxacinACTIVE_COMPARATOR -
PlaceboPLACEBO_COMPARATOR -

Interventions

NameTypeDescription
Anagrelide HydrochlorideDRUGSubjects will be started at 1.0 mg per day and titrated as necessary.
Anagrelide 0.5 mgDRUG0.5mg Anagrelide single oral dose
Anagrelide 2.5 mgDRUG2.5mg Anagrelide single oral dose
MoxifloxacinDRUG400 mg Moxifloxacin single oral dose
PlaceboDRUGAnagrelide placebo + Moxifloxacin placebo single oral dose
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Eligibility Criteria

Age Range20 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites19

Inclusion Criteria: * Subjects must have previously been treated with a cytoreductive therapy and been intolerant or refractory to that therapy. Exclusion Criteria: * Subjects should not have any other underlying conditions or medications that would confound the study analysis or interact with th...

Countries:JapanSpainSwedenUnited KingdomFrance
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Competitive Landscape -Essential Thrombocythemia 9 trials (matched to "Essential Thrombocythemia (ET)")

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Frequently asked questions about Anagrelide

What is Anagrelide used for?

Anagrelide is used for essential thrombocythemia (ET), also spelled essential thrombocythaemia, a condition marked by elevated platelet counts. It has been studied in patients with this blood disorder to evaluate its platelet-lowering effects and safety.

Who makes Anagrelide?

Anagrelide is developed by Takeda Pharmaceutical Company Limited, whose stock trades under the ticker TAK. Takeda is the sponsor of clinical trials investigating anagrelide in essential thrombocythemia.

What phase is Anagrelide in?

Anagrelide has completed Phase 3 clinical trials for essential thrombocythemia. It is an investigational small molecule in hematology, and its development includes completed Phase 1 and Phase 2 studies as well.

What clinical trials is Anagrelide in?

Anagrelide has been studied in completed trials including NCT00413634, a Phase 2 pharmacokinetic study in essential thrombocythaemia patients, and NCT01214915, a Phase 3 trial in Japanese adults with essential thrombocythemia. A Phase 1 trial, NCT01552928, examined heart function in healthy volunteers.

How does Anagrelide work?

Anagrelide works by lowering platelet counts in patients with essential thrombocythemia. Its mechanism involves reducing platelet production, which helps manage the elevated platelet levels characteristic of this condition.

Is Anagrelide the same as SPD422?

Anagrelide is the same as SPD422, as indicated by the Phase 3 trial NCT01214915, which studied the effect of SPD422 on platelet lowering in essential thrombocythemia. SPD422 is an alternative name for anagrelide hydrochloride.