- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01227811
Single Dose Two-periods Crossover Bioequivalence Study of Darifenacin Tablets in Healthy Volunteers.
Single Dose, Two-period, Crossover, Fed Bioequivalence Study of Darifenacin Extended Release Oral Formulation (Darisec(R) 15 mg) vs. Enablex(R) 15 mg in Healthy Volunteers.
The present study was designed to assess the bioequivalence and pharmacokinetic profiling of a brand generic formulation of darifenacin [Darisec(R)]vs. the innovator [Enablex(R)]in healthy volunteers after a high fat breakfast.
The bioequivalence will be evaluated using:
- the Area Under the Curve (AUC) and,
- the peak plasma concentration (Cmax).
Safety will be evaluated recording:
- vital signs
- adverse events,
- laboratory analysis.
- EKG and chest XRays.
Bioequivalence will be claimed if the drugs comply with local regulatory requirement, eg.:
- mean AUCt/AUCr and 90% confidence interval within 0.80-1.25
- mean Cmaxt/Cmaxr and 90% confidence interval within 0.80-1.25.
Study Overview
Status
Conditions
Intervention / Treatment
Detailed Description
Darifenacin is a muscarinic receptor antagonist drug used to treat overactive bladder. There is a new formulation of darifenacin extended release developed by an argentinian pharmaceutical company and, according to regional regulations, a bioequivalence study should be performed to put it in the market.
The purpose of this study is to evaluate the relative bioavailability and pharmacokinetic profiling of a brand generic formulation of darifenacin [Darisec(R) 15 mg] vs. the innovator [Enablex(R) 15 mg] in 24 healthy uruguayan volunteers after a high fat breakfast of 1000 calories (50% fat, 35% carbohydrates (sugar, flour, etc.) and 15& proteins) to establish their average bioequivalence.
The bioequivalence will be evaluated using outcome measures that will be described later.
The pharmacokinetic characteristics of the drugs will be described calculating:
- the time to Cmax (Tmax)
- the elimination constant (Ke),
- the elimination half-life (t1/2e)and,
- the systemic clearance (Cls.
Safety will be evaluated recording:
- vital signs (blood pressure, heart rate, body temperature)
- adverse events,
- laboratory analysis (hemogram, hepatic enzymes, creatinine, sugar in blood,etc.).
- EKG and chest XRays.
Bioequivalence will be claimed if the drugs comply with local and FDA regulatory requirement, eg.:
- mean AUCt/AUCr and 90% confidence interval within 0.80-1.25
- mean Cmaxt/Cmaxr and 90% confidence interval within 0.80-1.25.
Safety will be evaluated comparing incidences of adverse events/adverse effects for both products.
Study Type
Enrollment (Anticipated)
Phase
- Phase 1
Contacts and Locations
Study Contact
- Name: Federico Santoro, MD
- Phone Number: +541143794300
- Email: santorof@elea.com
Study Contact Backup
- Name: Joanna Steimberg, MBA
- Phone Number: +541143794330
- Email: steimbej@elea.com
Study Locations
-
-
-
Montevideo, Uruguay, 11600
- Center for Clinical Pharmacology Research Bdbeq S.A.; Hospital Italiano de Montevideo..
-
Contact:
- Susana Parrillo, MD
- Phone Number: 201 +59824876288
- Email: sparrillo@bdbeq.com.uy
-
Contact:
- Mónica Cedrés, Pharm. B.
- Phone Number: 202 +59824876288
- Email: mcedres@bdbeq.com.uy
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Healthy male or female subjects 18 to 50 years of age (inclusive)
- In good health, as determined by lack of clinically significant abnormalities at screening as judged by the physician.
- Female subjects are required to use a medically accepted method of hormonal contraception or abstinence throughout the entire study period and for one week after the study is completed.
- Body mass index within the range of 18.5 and 29.9 kg/m2 and weight at least 45 kg.
Exclusion Criteria:
- Known hypersensitivity or severe adverse event to darifenacin or similar drugs.
- Urinary retention, narrow-angle glucoma, myasthenia gravis, severe hepatic impairment, severe ulcerative colitis, toxic megacolon.
- Symptomatic hiatus hernia, erosive or symptomatic gastroesophageal reflux disease/heartburn (>2 days in a week), severe constipation, gastrointestinal obstructive disorder, and gastric retention.
- Clinically significant cardiac abnormalities, fainting, low blood pressure upon standing, irregular heartbeats.
- Acute or chronic bronchospastic disease (including asthma and Chronic Obstructive Pulmonary Disease).
- Clinically significant drug allergy or history of atopic allergy (asthma, urticaria, eczematous dermatitis).
- Smokers of more than 5 cigarettes a week.
- Regular use of any drugs known to induce or inhibit hepatic drug metabolism (particularly those that affect CYP2D6) within 30 days prior to each study drug administration.
- Any surgical or medical condition wich might significantly alter the absorption, distribution, metabolism or excretion of drugs which may jeopardize participation in the study.
- Immunodeficiency diseases, including a positive HIV (Elisa or Western blot) test result.
- Positive hepatitis B Surface antigen (HBsAg) or Hepatitis C test result.
- Drug or alcohol abuse within the 6 months prior to dosing.
- Use of prescription drugs within 1 month prior to dosing, or over-the-counter medication (vitamine, herbal supplements, dietary supplements) within 2 weeks prior to dosing. Paracetamol and ibuprofen are acceptable.
- Participation in any clinical investigation within 4 weeks prior to dosing.
- Donation or loss of 400 ml or more of blood within 2 months prior to dosing.
- significant illness within 2 weeks prior to dosing.
- Other protocol-defined inclusion/exclusion criteria may apply.
Study Plan
How is the study designed?
Design Details
- Allocation: Randomized
- Interventional Model: Crossover Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Active Comparator: Enablex(R) 15 mg , single dose
|
Single oral dose Darisec(R) 15.0 mg
Other Names:
Single oral dose Enablex(R) 15 mg
|
Experimental: Darifenacin 15 mg tablets, single dose
|
Single oral dose Darisec(R) 15.0 mg
Other Names:
Single oral dose Enablex(R) 15 mg
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Extent of Absorption.
Time Frame: 72 hours
|
Extent of absorption will be measured using the area under plasma concentrations of darifenacin vs. time from time 0 to the last sample point (AUC0-t) and from time 0 to infinity (AUC0-inf).
|
72 hours
|
Rate of Absorption
Time Frame: 72
|
Rate of abosrption will be measured using the peak concentration of darifenacin (Cmax).
|
72
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Time to peak concentration (tmax)
Time Frame: 72 hours
|
Is the time elapsed from ingestion of darifenacin tablets to plasma peak concentration.
|
72 hours
|
Absorption Rate Constant(Ka)
Time Frame: 72 hours
|
The absorption rate constant is the fractional rate of drug disappearance from the intestinal tract, measured in the log-linear phase of drug absorption.
|
72 hours
|
Elimination Rate Constant (Ke)
Time Frame: 72
|
The elimiminaiton rate constant is the fractional rate of drug dissapearance from the peripheral compartment, measured in the log-linear phase of elimination.
|
72
|
Collaborators and Investigators
Collaborators
Investigators
- Study Director: Francisco E. Estevez-Carrizo, MD, Univerisity of Montevideo. Biomedical Science Center.Prudencio de Pena 2440, 11600 Montevideo. Uruguay
- Principal Investigator: Susana Parrillo, M.D., Center for Clinical Pharmacology Research Bdbeq S.A., Br. Artigas 1632. c.p. 11600 Montevideo. Uruguay.
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Anticipated)
Study Completion (Anticipated)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- BDBEQ_DFNLP/ELEA_011
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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