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Completed

NCT Number: NCT02170675

Relative Bioavailability of Single Doses of Dabigatran Etexilate When Administered Alone or in Combination With a Single Dose of Ketoconazole or in Combination With q.d. Ketoconazole at Steady State in Healthy Male and Female Volunteers

To investigate whether and to what extent the P-glycoprotein (P-gp) inhibitor ketoconazole affects plasma exposure of dabigatran.

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Key information

Conditions

Age range

21 year–50 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Healthy males and females according to the following criteria:

Based upon a complete medical history, including the physical examination, vital signs (BP, PR), 12-lead ECG, clinical laboratory tests

  • Age ≥21 and ≤50 years
  • BMI range ≥18.5 and ≤29.9 kg/m2 (Body Mass Index)
  • Signed and dated written informed consent prior to admission to the study in accordance with GCP and the local legislation.

Exclusion criteria

  • Any finding of the medical examination (including BP, PR and ECG) deviating from normal and of clinical relevance
  • Any evidence of a clinically relevant concomitant disease
  • Gastrointestinal, hepatic, renal, respiratory, cardiovascular, metabolic, immunological or hormonal disorders
  • Surgery of the gastrointestinal tract (except appendectomy)
  • Diseases of the central nervous system (such as epilepsy) or psychiatric disorders or neurological disorders
  • History of relevant orthostatic hypotension, fainting spells or blackouts.
  • Chronic or relevant acute infections
  • History of relevant allergy/hypersensitivity (including allergy to drug or its excipients)
  • Intake of drugs with a long half-life (> 24 hours) within at least one month or less than 10 half-lives of the respective drug prior to administration or during the trial, and intake of drugs which might reasonably influence the results of the trial within four weeks prior to administration or during the trial (e.g. P-gp inducers)
  • Participation in another trial with an investigational drug within two months prior to administration or during the trial
  • Smoker (> 10 cigarettes or > 3 cigars or > 3 pipes/day)
  • Alcohol abuse (more than 60 g/day)
  • Drug abuse
  • Blood donation (more than 100 mL within four weeks prior to administration or during the trial)
  • Excessive physical activities (within one week prior to administration or during the trial)
  • Any laboratory value outside the reference range that was of clinical relevance
  • Inability to comply with dietary regimen of trial site

Exclusion criteria

that were specific for this study:

  • Intake of medication, which influences the blood clotting, such as acetylsalicylic acid and oral vitamin K antagonists

For female subjects:

  • Pregnancy / positive pregnancy test, or planning to become pregnant during the study or within 1 month of study completion
  • No adequate contraception during the study and until 1 month of study completion, i.e.

implants, injectables, combined oral contraceptives, IUD [intrauterine device], sexual abstinence (for at least 1 month prior to enrolment), or surgical sterilisation (incl.

hysterectomy). Females, who were not surgically sterile were asked to additionally use barrier contraception methods (e.g. condom, diaphragm with spermicide)

  • Lactation period

Treatment and study plan

Dabigatran Etexilate

Drug

Ketoconazole

Drug

Primary outcomes

  1. Area under the concentration-time curve of the analyte in plasma over the time interval from 0 extrapolated to infinity for total dabigatran

    Time frame: up to Day 16

  2. Maximum measured concentration of the analyte in plasma for total dabigatran

    Time frame: up to Day 16

Secondary outcomes

  1. Area under the concentration-time curve of the analyte in plasma over the time interval from 0 extrapolated to infinity for free dabigatran

    Time frame: up to Day 16

  2. Maximum measured concentration of the analyte in plasma for free dabigatran

    Time frame: up to Day 16

  3. Maximum measured concentration of the analyte in plasma for dabigatran and BIBR 1087 SE, BIBR 951 BS

    Time frame: up to Day 16

  4. Time from dosing to the maximum concentration of the analyte in plasma for dabigatran and BIBR 1087 SE, BIBR 951 BS

    Time frame: up to Day 16

  5. Area under the concentration-time curve of the analyte in plasma over the time interval from 0 to the time of the last quantifiable data point for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  6. Area under the concentration-time curve of the analyte in plasma over the time interval from timepoints t1 to t2 for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  7. Area under the concentration-time curve of the analyte in plasma over the time interval from 0 to 24 h for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  8. Time from dosing to the maximum concentration of the analyte in plasma for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  9. Terminal rate constant of the analyte in plasma for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  10. Terminal half-life of the analyte in plasma for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  11. Mean residence time of the analyte in the body after oral administration for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  12. Apparent clearance of the analyte in the plasma after extravascular administration for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  13. Apparent volume of distribution during the terminal phase λz following an extravascular dose for dabigatran

    Time frame: up to Day 16

    Dabigatran after each single dose (free and total after conjugate cleavage)

  14. Changes from baseline in Vital signs (blood pressure [BP], pulse rate)

    Time frame: up to 14 days after last drug administration

  15. Changes from baseline in 12-lead ECG

    Time frame: up to 14 days after last drug administration

  16. Changes from baseline in Clinical laboratory tests (haematology, clinical chemistry, and urinalysis)

    Time frame: up to 14 days after last drug administration

  17. Number of patients with adverse events

    Time frame: up to 14 days after last drug administration

  18. Assessment of tolerability by the investigator

    Time frame: up to 14 days after last drug administration

Sponsors and collaborators

Lead sponsor

Boehringer Ingelheim

Industry

Registry information

Official study title

Relative Bioavailability of Single Doses of 150 mg Dabigatran Etexilate (Capsule) When Administered Alone or in Combination With a Single Dose of 400 mg Ketoconazole (Tablet) or in Combination With 400 mg q.d. Ketoconazole (Tablet) at Steady State in Healthy Male and Female Volunteers (an Open Label, Fixed Sequence, Phase I Study)

Important dates

Study start
2009
Primary completion
2009
First posted
Jun 23, 2014
Registry last updated
Jun 23, 2014

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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