Hokusai Study in Pediatric Patients With Confirmed Venous Thromboembolism (VTE)



Status:Recruiting
Conditions:Cardiology, Cardiology, Cardiology, Cardiology
Therapuetic Areas:Cardiology / Vascular Diseases
Healthy:No
Age Range:Any - 17
Updated:2/14/2019
Start Date:March 27, 2017
End Date:March 2021

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A Phase 3, Open-label, Randomized, Multi-center, Controlled Trial to Evaluate the Pharmacokinetics and Pharmacodynamics of Edoxaban and to Compare the Efficacy and Safety of Edoxaban With Standard of Care Anticoagulant Therapy in Pediatric Subjects From Birth to Less Than 18 Years of Age With Confirmed Venous Thromboembolism (VTE)

This is an event driven Phase 3, prospective, randomized, open-label, blinded endpoint
evaluation (PROBE) parallel group study in subjects with confirmed VTE. This study is
designed to evaluate the pharmacokinetics (PK) and pharmacodynamics (PD) of edoxaban and to
compare the efficacy and safety of edoxaban against standard of care in pediatric subjects
with confirmed VTE.

The objective is to demonstrate the non-inferiority of edoxaban to standard of care (SOC;
including low molecular weight heparin (LMWH), vitamin K antagonist (VKA), or synthetic
pentasaccharide (SP) Xa inhibitors) in the treatment and secondary prevention of VTE in
pediatric subjects with regard to the composite efficacy endpoint (ie, symptomatic recurrent
VTE, death as result of VTE, and no change or extension of thrombotic burden) during the
first 3-month treatment period.

Inclusion Criteria:

1. Male or female pediatric subjects between birth (defined as 38 weeks gestational age)
and less than 18 years of age at the time of consent.

2. Pediatric subjects with the presence of documented VTE confirmed by appropriate
diagnostic imaging and requiring anticoagulant therapy for at least 90 days.

3. Subjects must have received at least 5 days of heparin therapy prior to randomization
to treat the newly identified index VTE. In addition, prior to being randomized to
edoxaban or SOC, subjects initially treated with VKA are recommended to have an
international normalized ratio (INR) < 2.0.

4. Subject and/or parent(s)/legal guardian(s) or legally acceptable representative is
informed and provides signed consent for the child to participate in the study.

5. Female subjects who have menarche must test negative for pregnancy at Screening and
must consent to avoid becoming pregnant by using an approved contraception method
throughout the study.

Exclusion Criteria:

1. Subjects with active bleeding or high risk of bleeding contraindicating treatment with
LMWH, SP Xa inhibitors, VKAs, or direct oral anticoagulants (DOACs; identified high
risk of bleeding during prior experimental administration of DOACs).

2. Subjects who have been or are being treated with thrombolytic agents, thrombectomy or
insertion of a caval filter for the newly identified index VTE.

3. Administration of antiplatelet therapy is contraindicated in both arms except for low
dose aspirin defined as 1-5 mg/Kg/day with maximum of 100 mg/day.

4. Administration of rifampin is prohibited during the study and subjects on concomitant
use of rifampin are excluded.

5. Subjects with hepatic disease associated with coagulopathy leading to a clinically
relevant bleeding risk (aPTT > 50 seconds or international normalized ratio [INR] >
2.0 not related to anticoagulation therapy) or alanine aminotransferase (ALT) > 5 ×
the upper limit of normal (ULN) or total bilirubin > 2 × ULN with direct bilirubin >
20% of the total at Screening Visit.

6. Subjects with glomerular filtration rate (GFR) < 30% of normal for age and size as
determined by the Schwartz formula.

7. Subjects with stage 2 hypertension defined as blood pressure (BP) systolic and/or
diastolic confirmed > 99th percentile + 5 mmHg.

8. Subject with thrombocytopenia < 50 × 109/L at Screening Visit. Subjects with a history
of heparin-induced thrombocytopenia may be enrolled in the study at the Investigator's
discretion.

9. Life expectancy less than the expected study treatment duration (3 months).

10. Subjects who are known to be pregnant or breastfeeding.

11. Subjects with any condition that, as judged by the Investigator, would place the
subject at increased risk of harm if he/she participated in the study, including
contraindicated medications.

12. Subjects who participated in another clinical study or treated with an experimental
therapy with less than a 30 day washout period prior to identifying the qualifying
index VTE.
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Memphis, Tennessee 38103
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Chapel Hill, North Carolina 27599
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4650 Sunset Blvd
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262 Danny Thomas Pl
Memphis, Tennessee 38105
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1601 Northwest 12th Avenue
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4202 E Fowler Ave
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4230 Teniente General Juan Domingo Perón
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200 Hawthorne Ln
Charlotte, North Carolina 28204
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Charlotte, North Carolina 28204
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1653 W. Congress Parkway
Chicago, Illinois 60612
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Grand Rapids, Michigan 49503
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1001 E 5th St
Greenville, North Carolina 27858
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Indianapolis, Indiana 46260
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10833 Le Conte Avenue
Los Angeles, California 90095
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500 S Preston St
Louisville, Kentucky
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9000 W Wisconsin Ave #270
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Minneapolis, Minnesota 55404
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Oak Lawn, Illinois 60453
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940 NE 13th St
Oklahoma City, Oklahoma 73190
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Providence, Rhode Island 02903
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660 S Euclid Ave
Saint Louis, Missouri 63110
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300 Pasteur Dr
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