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A Clinical Study to Determine the Effect of YM178 on the Pharmacokinetics of Warfarin in Healthy Subjects

This study has been completed.
Information provided by (Responsible Party):
Astellas Pharma Inc Identifier:
First received: March 4, 2009
Last updated: July 1, 2013
Last verified: July 2013
This study investigates whether YM178 has an effect on the pharmacokinetics of warfarin, to exclude any drug-drug interaction between YM178 and warfarin, and evaluates the safety and tolerability of warfarin alone and combined with YM178.

Condition Intervention Phase
Overactive Bladder Pharmacokinetics Drug: warfarin Drug: YM178 Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: An Open-label, One-sequence Crossover Study to Evaluate the Effect of Multiple Doses of YM178 on the Pharmacokinetics of Warfarin in Healthy Subjects

Resource links provided by NLM:

Further study details as provided by Astellas Pharma Inc:

Primary Outcome Measures:
  • R- and S-warfarin in plasma: AUCinf, AUClast, Cmax, tmax, t1/2, CL/F [ Time Frame: Day 1-9 and 15-31 ]
  • The AUCinf of both enantiomers will be used to assess the potential drug-drug interaction. [ Time Frame: Day 1/2 and 15/16 ]

Secondary Outcome Measures:
  • Adverse events, clinical laboratory tests (hematology, biochemistry, urinalysis), vital signs, 12-lead ECG, physical examination [ Time Frame: Day -1 - 31 ]
  • YM178 in plasma: Ctrough, AUCtau, Cmax, tmax, CL/F [ Time Frame: Day 20-24 ]
  • Degree of anticoagulation: AUCPT;0-168h (area under the prothrombin time versus time curve from 0 to 168 h after dosing with warfarin), AUCINR;0-168h, maximum PT (PTmax), time to reach PTmax (tPT; max), INRmax, tINR;max [ Time Frame: Day 1-9 and 23-31 ]

Enrollment: 24
Study Start Date: September 2008
Study Completion Date: December 2008
Primary Completion Date: December 2008 (Final data collection date for primary outcome measure)
Intervention Details:
    Drug: warfarin
    Other Name: Coumadin
    Drug: YM178
    Other Name: mirabegron

Ages Eligible for Study:   18 Years to 55 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Female subject must be of non-child bearing potential, i.e. postmenopausal, surgically sterilized (e.g. tubal ligation), hysterectomy in medical history, or must practice adequate (double barrier) non-hormonal contraceptive methods to prevent pregnancies.
  • Body Mass Index (BMI) ≥ 18.5 and < 30 kg/m2, inclusive

Exclusion Criteria:

  • Female who is pregnant
  • Any of the liver function tests (i.e. alanine aminotransferase (ALT), aspartate aminotransferase (AST) and Alkaline Phosphatase (AP)) above the upper limit of normal (ULN)
  • Any clinically significant history of disease or disorder - gastrointestinal, cardiovascular, respiratory, renal, hepatic, neurological, dermatological, psychiatric or metabolic as judged by the medical investigator
  • Abnormal pulse and/or blood pressure measurements and the pre-study as follows: Pulse < 40 or > 90 bpm; mean systolic blood pressure > 140 mmHg; mean diastolic blood pressure > 90 mmHg (blood measurements taken in triplicate after subject has been resting in supine position for 5 min; pulse will be measured automatically
  • A marked baseline prolongation of QT/QTc interval after repeated measurements of >450 ms, a history of unexplained syncope, cardiac arrest, unexplained cardiac arrhythmias or torsades de pointes, structural heart disease, or a family history of Long QT Syndrome (LQTS)
  • Use of any prescribed or OTC (over-the counter) drugs (including vitamins, natural and herbal remedies, e.g. St. John's wort) in the 2 weeks prior to admission to the Clinical Unit, except for paracetamol (up to 3 g/day)
  • Any use of drugs of abuse within 3 months prior to admission to the clinical unit
  • History of smoking more than 10 cigarettes (or equivalent amount of tobacco) per day within 3 months prior to admission to the clinical unit
  • History of drinking more than 21 units of alcohol per week (1 unit = 270 ml of beer or 40 ml of spirits or 1 glass of wine) (> 14 units of alcohol for female subjects) within 3 months prior to admission to the clinical unit
  • Donation of blood or blood products within 3 months prior to admission to the clinical unit
  Contacts and Locations
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Please refer to this study by its identifier: NCT00856570

Paris, France, 75015
Sponsors and Collaborators
Astellas Pharma Inc
Study Chair: Use Central Contact Astellas Pharma Europe B.V.
  More Information

Additional Information:
Responsible Party: Astellas Pharma Inc Identifier: NCT00856570     History of Changes
Other Study ID Numbers: 178-CL-040
EudraCT 2008-000211-15
Study First Received: March 4, 2009
Last Updated: July 1, 2013

Keywords provided by Astellas Pharma Inc:
Phase I

Additional relevant MeSH terms:
Urinary Bladder, Overactive
Urinary Bladder Diseases
Urologic Diseases
Lower Urinary Tract Symptoms
Urological Manifestations
Signs and Symptoms
Adrenergic beta-3 Receptor Agonists
Adrenergic beta-Agonists
Adrenergic Agonists
Adrenergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Physiological Effects of Drugs
Urological Agents
Anticoagulants processed this record on June 23, 2017