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Efficacy and Safety of TAK-442 in Subjects Undergoing Total Knee Replacement

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00641732
Recruitment Status : Completed
First Posted : March 24, 2008
Last Update Posted : April 13, 2016
Information provided by (Responsible Party):

Brief Summary:
The purpose of this study is to determine if TAK-442, once daily (QD) or twice daily (BID), is as safe and effective as enoxaparin in preventing the development of blood clots after knee replacement surgery.

Condition or disease Intervention/treatment Phase
Venous Thromboembolism Drug: TAK-442 Drug: Enoxaparin Phase 2

Detailed Description:

Takeda Global Research & Development Center, Inc. is developing the compound TAK-442 as a candidate for the secondary prevention of atherothrombotic events in patients with acute coronary syndromes. TAK-442 is an oral inhibitor of activated factor X within the blood coagulation cascade.

Due to its critical role in propagating the coagulation cascade, activated factor X is now considered to be a therapeutic aim in the development of anticoagulant drugs. Therefore activated factor X inhibitors, are among the agents under investigation as treatments for the spectrum of thromboembolic diseases involving either the arterial or the venous system.

Short term anticoagulation is often used for the prevention of venous thromboembolism. Patients undergoing major orthopedic surgery are at particularly high risk of venous thromboembolism after surgery. Consequently, such patients are routinely given anticoagulant medication after surgery. Although parenteral (injectable) drugs, such as enoxaparin or fondaparinux, can be used for this indication, the need for subcutaneous injection is problematic once patients are discharged from hospital. With the push for shorter hospital stays, this issue is of increasing concern. Therefore, there is a need for new oral anticoagulants. Although warfarin can be used for out of hospital prophylaxis, the need for coagulation monitoring and dose adjustments complicates its use. The new oral anticoagulants have the potential to overcome this problem because they can be given in fixed doses without the need for coagulation monitoring.

The purpose of the current study is to evaluate the antithrombotic effect of TAK-442 in patients undergoing elective total knee replacement surgery. This study will be the first TAK-442 trial in patients.

Individuals who want to participate in this study will be required to provide written informed consent. Study participation is anticipated to be approximately 2.25 months. Multiple procedures will occur at each visit which may include fasting, blood collection, urine collection, physical examinations, electrocardiograms and bilateral venogram. Outside of the study center, participants randomized to enoxaparin will be required to administer study medication subcutaneously with a syringe.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 1045 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: A Phase 2, Randomized, Active Comparator-Controlled, Dose-Ranging Study to Evaluate the Efficacy and Safety of TAK-442 in Subjects Undergoing Total Knee Replacement
Study Start Date : October 2007
Actual Primary Completion Date : October 2008
Actual Study Completion Date : October 2008

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Knee Replacement

Arm Intervention/treatment
Experimental: TAK-442 40 mg QD Drug: TAK-442
TAK-442 40 mg, tablets, orally, once daily for up to 10 days.

Experimental: TAK-442 80 mg QD Drug: TAK-442
TAK-442 80 mg, tablets, orally, once daily for up to 10 days.

Experimental: TAK-442 10 mg BID Drug: TAK-442
TAK-442 10 mg, tablets, orally, twice daily for up to 10 days.

Experimental: TAK-442 20 mg BID Drug: TAK-442
TAK-442 20 mg, tablets, orally, twice daily for up to 10 days.

Experimental: TAK-442 40 mg BID Drug: TAK-442
TAK-442 40mg, tablets, orally, twice daily for up to 10 days.

Experimental: TAK-442 80 mg BID Drug: TAK-442
TAK-442 80 mg, tablets, orally, twice daily for up to 10 days.

Active Comparator: Enoxaparin 30 mg BID Drug: Enoxaparin
Enoxaparin 30 mg, syringe, subcutaneous injection, twice daily for up to 10 days.

Primary Outcome Measures :
  1. Composite evaluation of All-Cause Mortality, Symptomatic and Asymptomatic Deep Vein Thrombosis and Symptomatic Pulmonary Embolism. [ Time Frame: Day 10. ]
  2. Incidence of Major Bleeding. [ Time Frame: Day 10. ]

Secondary Outcome Measures :
  1. Evaluation of Major Venous Thromboembolism (composite of Symptomatic or Asymptomatic Proximal Deep Vein Thrombosis, Symptomatic Objectively Confirmed Pulmonary Embolism, and Venous Thromboembolism-Related Death). [ Time Frame: Day 10. ]
  2. Evaluation of Symptomatic Venous Thromboembolism. [ Time Frame: Day 10. ]
  3. Evaluation of Proximal Deep Vein Thrombosis. [ Time Frame: Day 10. ]
  4. Evaluation of Distal Deep Vein Thrombosis. [ Time Frame: Day 10. ]
  5. Evaluation of clinically significant Non-Major Bleeding events. [ Time Frame: Day 10. ]
  6. Evaluation of Minor Bleeding events. [ Time Frame: Day 10. ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria

  • Scheduled to undergo elective, unilateral, primary, total knee replacement.
  • Females of childbearing potential who are sexually active must agree to use adequate contraception, and can neither be pregnant nor lactating from Screening throughout the duration of the study.
  • Screening laboratory tests (including clinical chemistry, hematology, and complete urinalysis) are within the reference range for the testing laboratory or are determined not to compromise subject safety by the investigator.

Exclusion Criteria

  • Received TAK-442 in a previous clinical study or as a therapeutic agent.
  • Body weight greater than 150 kg.
  • Known bleeding diathesis (including Von Willebrand's disease or Hemophilia A or B).
  • History of intracerebral, intraocular, or gastrointestinal bleeding, or active gastric or duodenal ulceration, within the 6 months prior to Randomization.
  • Is required to take or continues taking any disallowed medication, prescription medication, herbal treatment or over-the counter medication that may interfere with evaluation of the study medication, including throughout the treatment period of the study due to an increased risk of bleeding, and should be stopped at least 5 days prior to surgery and in accordance with the product information:

    • Parenteral anticoagulants
    • Unfractionated heparin
    • Low molecular weight heparin (eg, dalteparin, non-study enoxaparin)
    • Direct thrombin inhibitors (eg, bivalirudin, argatroban)
    • Factor Xa inhibitors (eg, fondaparinux)
    • Oral anticoagulants
    • Warfarin
    • Anisindione
    • Antiplatelet drugs
    • Aspirin greater than 162 mg/day
    • Clopidogrel
    • Ticlopidine
    • Cilostazol
    • Dipyridamole
    • Glycoprotein IIb/IIIa inhibitors (eg, abciximab, eptifibatide)
    • NSAIDs with a half life greater than or equal to 17 hours
    • Meloxicam
    • Fibrinolytic agents
    • tPA (alteplase, reteplase, tenecteplase)
  • History of major surgery within 3 months prior to randomization; or deep vein thrombosis, pulmonary embolism, myocardial infarction, cerebrovascular accident, or transient ischemic attack within 6 months prior to randomization.
  • History of hypersensitivity or allergies to other activated factor X inhibitors or enoxaparin (or other low molecular weight heparins).
  • Condition prohibiting bilateral venography.
  • Has had multiple or traumatic epidural or spinal punctures immediately prior to randomization (defined as grossly bloody or greater than 3 attempted cannulations).
  • Requires use of an indwelling epidural catheter for post-operative analgesia.
  • Severe hypertension defined as systolic blood pressure greater than 180 mmHg or diastolic blood pressure greater than 110 mmHg at Screening.
  • Moderate to severe renal dysfunction or disease (based on calculated creatinine clearance less than 45 mL/min/1.73 m2) at Screening.
  • Alanine aminotransferase level greater than 2.0 times the upper limit of normal, active liver disease, or jaundice at Screening.
  • Anemia (hemoglobin less than 10.0 g per dL) or thrombocytopenia (platelet count less than 100 times 103 per uL) at screening.
  • Taking aspirin greater than 162 mg per day.
  • Abuses drugs (defined as any illicit drug use) or alcohol.
  • History of cancer that has not been in remission for at least 5 years prior to the first dose of study drug. (This criterion does not include those subjects with basal cell or Stage 1 squamous cell carcinoma of the skin.)
  • Currently participating in another investigational study or has participated in an investigational study within 30 days prior to Screening.
  • Any other serious disease or condition at Screening or Randomization that would compromise subject safety or make it difficult to successfully manage and follow the subject according to the protocol.
  • Requires the use of pneumatic compression post-operatively.
  • Known inherited thrombophilic disorder such as the factor V Leiden or prothrombin gene mutations or deficiencies of antithrombin, protein C, or protein S.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00641732

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Sponsors and Collaborators
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Study Director: Executive Medical Director Clinical Science Takeda
Publications of Results:
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Responsible Party: Takeda Identifier: NCT00641732    
Other Study ID Numbers: TAK-442_201
U1111-1115-9359 ( Registry Identifier: WHO )
First Posted: March 24, 2008    Key Record Dates
Last Update Posted: April 13, 2016
Last Verified: March 2016
Keywords provided by Takeda:
venous thromboembolism
oral anticoagulant
direct factor Xa inhibitor
total knee replacement
drug therapy
Additional relevant MeSH terms:
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Venous Thromboembolism
Embolism and Thrombosis
Vascular Diseases
Cardiovascular Diseases
Fibrinolytic Agents
Fibrin Modulating Agents
Molecular Mechanisms of Pharmacological Action
Factor Xa Inhibitors
Serine Proteinase Inhibitors
Protease Inhibitors
Enzyme Inhibitors