Effect of Lapaquistat Acetate Combined With Fenofibrate on Blood Cholesterol Levels
23 mai 2012 mis à jour par: Takeda
A Double-blind, Randomized Study to Evaluate the Efficacy and Safety of TAK-475 or Placebo When Coadministered With Fenofibrate in Subjects With Combined Hyperlipidemia
The purpose of this study is to compare changes in cholesterol levels in patients with elevated blood cholesterol with administration of lapaquistat acetate, once daily (QD), and fenofibrate.
Aperçu de l'étude
Statut
Complété
Les conditions
Intervention / Traitement
Description détaillée
Elevated plasma cholesterol (hypercholesterolemia) and various other plasma lipid imbalances (dyslipidemias) are major risk factors for coronary heart disease. It has been established that lowering the low-density lipoprotein cholesterol plasma concentration effectively reduces cardiovascular morbidity and mortality. As a result of this finding, the National Cholesterol Education Program Adult Treatment Panel III identifies control of low-density lipoprotein cholesterol as essential in the prevention and management of coronary heart disease.
Currently, 3-hydroxy-3-methylglutaryl coenzyme A reductase inhibitors (statins) are the first-line monotherapies prescribed to reduce low-density lipoprotein cholesterol, after diet and therapeutic lifestyle change. However, low doses of statins often fail to produce the Adult Treatment Panel III-recommended levels of low-density lipoprotein cholesterol reduction, making it necessary to increase the dose or add an additional treatment. This in turn may result in decreased tolerability and potential safety concerns.
At higher doses, statins are associated with various myopathies ranging from rare occurrences of rhabdomyolysis and myositis to more frequent symptoms of muscle weakness, cramps, or pain; these can occur with mild or no increases in creatine kinase. Statin use also is associated with increases in liver transaminase levels. These tolerability and safety concerns may contribute to the high discontinuation rates of statins and their prescription at low, and often ineffective, doses.
TAK-475 (lapaquistat acetate) inhibits the cholesterol synthesis pathway at a different step than statins (acting on squalene synthase rather than 3-hydroxy-3-methylglutaryl coenzyme A); it does not reduce concentrations of isoprenylated intermediates believed to be responsible for the myopathies associated with statin use.
This study was conducted to determine whether lapaquistat acetate with fenofibrate has the potential to be more effective than fenofibrate by itself in lowering low-density lipoprotein cholesterol.
Type d'étude
Interventionnel
Inscription (Réel)
213
Phase
- Phase 2
Contacts et emplacements
Cette section fournit les coordonnées de ceux qui mènent l'étude et des informations sur le lieu où cette étude est menée.
Lieux d'étude
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British Columbia
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Coquitlam, British Columbia, Canada
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Victoria, British Columbia, Canada
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Ontario
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London, Ontario, Canada
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Toronto, Ontario, Canada
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Alabama
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Huntsville, Alabama, États-Unis
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Arizona
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Sierra Vista, Arizona, États-Unis
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California
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Beverly Hills, California, États-Unis
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Long Beach, California, États-Unis
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Spring Valley, California, États-Unis
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Colorado
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Colorado Springs, Colorado, États-Unis
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Golden, Colorado, États-Unis
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Connecticut
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Waterbury, Connecticut, États-Unis
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Florida
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Jacksonville, Florida, États-Unis
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Kissimmee, Florida, États-Unis
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Miami, Florida, États-Unis
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Ocala, Florida, États-Unis
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Pembroke Pines, Florida, États-Unis
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Pinellas Park, Florida, États-Unis
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West Palm Beach, Florida, États-Unis
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Georgia
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Warner Robins, Georgia, États-Unis
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Illinois
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Chicago, Illinois, États-Unis
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Peoria, Illinois, États-Unis
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Indiana
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Indianapolis, Indiana, États-Unis
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Kansas
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Wichita, Kansas, États-Unis
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Minnesota
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Edina, Minnesota, États-Unis
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Missouri
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St. Louis, Missouri, États-Unis
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North Carolina
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Raleigh, North Carolina, États-Unis
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Winston-Salem, North Carolina, États-Unis
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Ohio
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Cincinnati, Ohio, États-Unis
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Columbus, Ohio, États-Unis
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Oregon
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Hillsboro, Oregon, États-Unis
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Pennsylvania
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Beaver, Pennsylvania, États-Unis
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South Carolina
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Goose Creek, South Carolina, États-Unis
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Tennessee
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Nashville, Tennessee, États-Unis
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Virginia
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Norfolk, Virginia, États-Unis
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Richmond, Virginia, États-Unis
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Critères de participation
Les chercheurs recherchent des personnes qui correspondent à une certaine description, appelée critères d'éligibilité. Certains exemples de ces critères sont l'état de santé général d'une personne ou des traitements antérieurs.
Critère d'éligibilité
Âges éligibles pour étudier
18 ans et plus (Adulte, Adulte plus âgé)
Accepte les volontaires sains
Non
Sexes éligibles pour l'étude
Tout
La description
Inclusion Criteria:
- Women of childbearing potential must not be pregnant as determined by a negative serum human chorionic gonadotropin, not lactating, not planning on becoming pregnant between Screening and 30 days following the last dose of study medication, and agreed to use acceptable forms of contraception during the study.
- Prior to Randomization, must have a mean low density lipoprotein cholesterol greater than or equal to 100 mg/dL (2.59 mmol/L) for 2 consecutive samples. The difference between the two individual low density lipoprotein cholesterol values not to exceed 15% of the higher value.
- Prior to Randomization, must have mean triglycerides greater than or equal to 150 and less than or equal to 600 mg/dL (1.70 and 6.78 mmol/L, respectively) for 2 consecutive samples. The upper value for either triglycerides sample must have been less than or equal to 650 mg/dL (7.35 mmol/L).
- Clinical laboratory evaluations (including clinical chemistry [fasted for at least 10 hours], hematology and urinalysis) within the reference range for the testing laboratory unless results deemed not clinically significant or considered within normal limits for this subject by the investigator or the sponsor.
- Willing and able to continue to comply with a standardized low cholesterol diet.
Exclusion Criteria:
- Alanine aminotransferase or aspartate aminotransferase level of greater than 1.5 times the upper limit of normal, active liver disease or jaundice.
- Serum creatinine greater than 1.5 mg/dL (133 μmol/L).
- Creatine phosphokinase greater than 3 times the upper limit of normal.
- Diabetes with a hemoglobin A1c greater than 8 % at Visit 1.
- Previous history of cancer in remission for less than 5 years prior to the first dose of study medication. Does not include those subjects with basal cell or stage I squamous cell carcinoma of the skin.
- An endocrine disorder, such as Cushing's syndrome, hyperthyroidism, or inappropriately treated hypothyroidism, affecting lipid metabolism. Subjects with hypothyroidism on appropriate replacement therapy (defined as stable thyroid hormone replacement therapy at least 3 months prior to Visit 1 and thyrotropin levels less than 1.5 times the upper limit of normal) are eligible for enrollment. If thyrotropin is greater than 1.5 times upper limit of normal, a free thyroxine level is to be determined. If the free thyroxine is within normal limits for that subject, the subject may continue in the study.
- History of myocardial infarction, unstable angina, transient ischemic attacks, cerebrovascular accident, percutaneous coronary intervention, coronary or peripheral arterial surgery (bypass graft surgery) in the 6 months prior to Visit 1.
- Positive hepatitis B surface antigen, or hepatitis C virus antibody, as determined by medical history and/or subject's verbal report.
- Positive human immunodeficiency virus status or is taking anti-retroviral medications, as determined by medical history and/or subject's verbal report.
- Unable or unwilling to discontinue excluded medications or to continue stable doses of "stable dose" medications or required treatment with any excluded medication during the study.
- Exposure to TAK-475 in other studies or currently is participating in another investigational study or has participated in an investigational study within the past 30 days or, for drugs with a long half-life, within a period of less than 5 times the drug's halflife.
- Known hypersensitivity or history of adverse reaction to any fibrate.
- History or presence of clinically significant food allergy that would prevent adherence to the therapeutic lifestyle change (or equivalent) diet.
- Known homozygous familial hypercholesterolemia or known Type III hyperlipoproteinemia (familial dysbetalipoproteinemia).
- Active cholecystitis or known cholelithiasis (a fibrate risk factor).
- Severe renal or hepatic dysfunction, including biliary cirrhosis during Run-In or at Randomization (a fibrate risk factor).
- Fibromyalgia, myopathy, rhabdomyolysis or unexplained muscle pain.
- Uncontrolled hypertension (defined as resting diastolic blood pressure greater than100 mm Hg or resting systolic blood pressure greater than 160 mm Hg) at Visit 1.
- Inflammatory bowel disease or any other malabsorption syndrome or has had gastric bypass or any other surgical procedure for weight loss.
- Unwilling or unable, in the opinion of the investigator, to comply with the protocol or scheduled appointments.
- Unable to understand verbal or written English or any other language for which a certified translation of the approved informed consent was available.
- History of drug abuse (defined as illicit drug use) or a history of alcohol abuse (defined as regular or daily consumption of more than 2 alcoholic drinks per day) within the past 2 years.
- Any other serious disease or condition at Screening or at Randomization that might reduce life expectancy, impair successful management according to the protocol, or make the subject an unsuitable candidate to receive study medication.
Plan d'étude
Cette section fournit des détails sur le plan d'étude, y compris la façon dont l'étude est conçue et ce que l'étude mesure.
Comment l'étude est-elle conçue ?
Détails de conception
- Objectif principal: Traitement
- Répartition: Randomisé
- Modèle interventionnel: Affectation parallèle
- Masquage: Quadruple
Armes et Interventions
Groupe de participants / Bras |
Intervention / Traitement |
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Expérimental: Lapaquistat Acetate 100 mg QD + Fenofibrate 145 mg QD
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Lapaquistat acetate 100 mg, tablets, orally, once daily and fenofibrate 145 mg, tablets, orally, once daily for up to 12 weeks.
Autres noms:
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Comparateur actif: Fenofibrate 145 mg QD
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Lapaquistat acetate placebo-matching tablets, orally, once daily and fenofibrate 145 mg, tablets, orally, once daily for up to 12 weeks.
Autres noms:
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Que mesure l'étude ?
Principaux critères de jugement
Mesure des résultats |
Délai |
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Percent change from Baseline in direct fasting plasma low-density lipoprotein cholesterol.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Mesures de résultats secondaires
Mesure des résultats |
Délai |
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Change from baseline in calculated low-density lipoprotein cholesterol.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in non- high-density lipoprotein cholesterol.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in total cholesterol.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in apolipoprotein B.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in triglycerides.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in high-density lipoprotein cholesterol.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in apolipoprotein A1.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in very-low-density lipoprotein cholesterol.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in derived ratios including total cholesterol/high-density lipoprotein cholesterol, low-density lipoprotein cholesterol/high-density lipoprotein cholesterol, and apolipoprotein B/ apolipoprotein Al.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Change from baseline in high-sensitivity C-reactive protein.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Percentage of Subjects Achieving Target Direct low-density lipoprotein cholesterol Levels.
Délai: Week 12 or Final Visit.
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Week 12 or Final Visit.
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Collaborateurs et enquêteurs
C'est ici que vous trouverez les personnes et les organisations impliquées dans cette étude.
Parrainer
Les enquêteurs
- Directeur d'études: Senior Medical Director, Takeda
Publications et liens utiles
La personne responsable de la saisie des informations sur l'étude fournit volontairement ces publications. Il peut s'agir de tout ce qui concerne l'étude.
Dates d'enregistrement des études
Ces dates suivent la progression des dossiers d'étude et des soumissions de résultats sommaires à ClinicalTrials.gov. Les dossiers d'étude et les résultats rapportés sont examinés par la Bibliothèque nationale de médecine (NLM) pour s'assurer qu'ils répondent à des normes de contrôle de qualité spécifiques avant d'être publiés sur le site Web public.
Dates principales de l'étude
Début de l'étude
1 février 2006
Achèvement primaire (Réel)
1 janvier 2007
Achèvement de l'étude (Réel)
1 janvier 2007
Dates d'inscription aux études
Première soumission
19 décembre 2008
Première soumission répondant aux critères de contrôle qualité
19 décembre 2008
Première publication (Estimation)
23 décembre 2008
Mises à jour des dossiers d'étude
Dernière mise à jour publiée (Estimation)
24 mai 2012
Dernière mise à jour soumise répondant aux critères de contrôle qualité
23 mai 2012
Dernière vérification
1 mai 2012
Plus d'information
Termes liés à cette étude
Mots clés
Termes MeSH pertinents supplémentaires
Autres numéros d'identification d'étude
- 01-05-TL-475-031
- U1111-1122-8178 (Identificateur de registre: WHO)
Ces informations ont été extraites directement du site Web clinicaltrials.gov sans aucune modification. Si vous avez des demandes de modification, de suppression ou de mise à jour des détails de votre étude, veuillez contacter register@clinicaltrials.gov. Dès qu'un changement est mis en œuvre sur clinicaltrials.gov, il sera également mis à jour automatiquement sur notre site Web .