Open-Label Study of Oral CEP-701 (Lestaurtinib) in Patients With Polycythemia Vera or Essential Thrombocytosis

Study Overview
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Brief Summary
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This is an 18-week open-label, multicenter study to evaluate the efficacy and tolerability of CEP-701 (lestaurtinib) treatment in patients with Polycythemia Vera (PV) and patients with Essential Thrombocytosis (ET).

Detailed Description
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This is an 18-week open-label, multicenter study to evaluate the efficacy and tolerability of CEP-701 (lestaurtinib) treatment at a dosage of 80 mg bid for 18 weeks (126 days) in patients with Polycythemia Vera (PV) who have abnormal baseline neutrophil counts or require hydroxyurea therapy and patients with Essential Thrombocytosis (ET) who require hydroxyurea therapy for disease control.

Official Title
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An Open-Label Study of Oral CEP-701 in Patients With Polycythemia Vera or Essential Thrombocytosis With the JAK2 V617F Mutation

Conditions
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Polycythemia Vera, Essential Thrombocytosis

Intervention / Treatment
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* Drug: lestaurtinib


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: The patient has polycythemia vera (PV) or essential thrombocytosis (ET). The patient has a detectable JAK2 V617F mutation. Patients with PV have at least 1 of the following risk factors: neutrophil count greater than 7000/mm3 receiving hydroxyurea treatment Patients with ET are receiving concomitant hydroxyurea. The patient has an ECOG performance score of 0, 1, or 2. Exclusion Criteria: The patient has bilirubin levels or aspartate transaminases (AST) levels within exclusionary ranges. patient has serum creatinine concentrations within exclusionary ranges. patient has an untreated or progressive infection. patient has any physical or psychiatric condition that may compromise participation in the study. has a history of venous or arterial thrombosis within 6 months. use of hydroxyurea has been initiated or escalated in the month prior to screening. has active gastrointestinal ulceration or bleeding. patient has used an investigational drug within the past 30 days. patient is being treated with anagrelide. patient has previously taken CEP-701 (lestaurtinib). patient has hypersensitivity to CEP-701 (lestaurtinib) or any component of CEP-701 (lestaurtinib). patient has received interferon within the past 30 days.

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 99 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: lestaurtinib<br> | Drug: lestaurtinib<br>* 60 mg bid - 120 mg bid for an 18 weeks (126 days) treatment duration<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Determine whether a specific reduction in the JAK2 V617F allele has been indicated in this study. |  | 18 weeks + | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| - improvements in hemoglobin values, neutrophil count, and platelet count. - reduction in dose of hydroxyurea - reduction in splenic enlargement - rate of phlebotomy |  | 18 weeks + |