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A Phase I Study To Estimate The Effect Of Ketoconazole And Omeprazole On The Pharmacokinetics Of Dimebon In Healthy Subjects Who Are Normal Or Poor CYP2D6 Metabolizers

Last updated on December 5, 2019

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Study Location
Pfizer Investigational Site
Kalamazoo, Michigan, 49007 United States
Contact
1-800-718-1021
Eligibility criteria
Condition
The disease, disorder, syndrome, illness, or injury that is being studied.
Alzheimer's Disease, Huntington's Disease
Sex
Females and Males
Age
Pediatric Trials: 0-17 Years
Adult Trials: 18+ Years
18-55 years
Inclusion criteria
The factors, or reasons, that allow a person to participate in a clinical study.
Show details

- Subjects who are willing and able to comply with scheduled visits, treatment plan,
laboratory tests, and other study procedures.

- Subjects must have either a CYP2D6 EM (n=12) or PM (n=12) status based on genotyping
at screening.

- Subjects must have a CYP2C19 EM status based on status at screening.

Exclusion criteria
The factors, or reasons, that prevent a person from participating in a clinical study.
Show details

- Evidence or history of clinically significant hematological, renal, endocrine,
pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or
allergic disease.

- Subjects with any history of a previous seizure or convulsion or significant head
trauma.

- Subjects specifically allergic to imidazole antifungal agents.

- Subjects specifically allergic to omeprazole or other proton pump inhibitors.

- Any condition possibly affecting drug absorption (eg, gastrectomy).

- Subjects with hypersensitivity reactions to Dimebon or other antihistamines.

- Consumption of grapefruit or grapefruit containing products within 7 days prior to
the first dose of study medication.

- Subjects currently taking omeprazole, other proton pump inhibitors, antacids,
H2-blockers or CYP2C19 inhibitors.

- Pregnant or nursing females; females of childbearing potential who are unwilling or
unable to use an acceptable method of nonhormonal contraception as outlined in this
protocol from at least 14 days prior to the first dose of study medication.

NCT00931073
Pfizer
Completed
A Phase I Study To Estimate The Effect Of Ketoconazole And Omeprazole On The Pharmacokinetics Of Dimebon In Healthy Subjects Who Are Normal Or Poor CYP2D6 Metabolizers

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Descriptive Information
Brief Title  ICMJE A Phase I Study To Estimate The Effect Of Ketoconazole And Omeprazole On The Pharmacokinetics Of Dimebon In Healthy Subjects Who Are Normal Or Poor CYP2D6 Metabolizers
Official Title  ICMJE A Phase I, Open-Label, Three-Period, Fixed-Sequence Study To Estimate The Steady-State Effect Of Ketoconazole And Omeprazole On The Single-Dose Pharmacokinetics Of Dimebon [PF-01913539] In Healthy CYP2D6 EM And PM Subjects
Brief SummaryThis study will evaluate the potential for a drug-drug interaction of Dimebon with ketoconazole and omeprazole, potent inhibitors of the drug metabolizing enzymes CYP3A4 and CYP2C19, respectively.
Detailed DescriptionNot Provided
Study Type  ICMJE Interventional
Study Phase  ICMJE Phase 1
Study Design  ICMJE Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: None (Open Label)
Condition  ICMJE
  • Alzheimer's Disease
  • Huntington's Disease
Intervention  ICMJE
  • Drug: Dimebon alone
    Pharmacokinetics of a single oral dose of 10 mg Dimebon (tablet) will be assessed in subjects with a CYP2D6 extensive and poor metabolizer status based on genotyping as screening
  • Drug: Dimebon + Ketoconazole
    Pharmacokinetics of a single oral dose of 10 mg Dimebon (tablet) will be assessed on Day 4 during the daily administration of ketoconazole (400 mg, Day 1-11) in subjects with a CYP2D6 extensive and poor metabolizer status based on genotyping as screening
  • Drug: Dimebon + Omeprazole
    Pharmacokinetics of a single oral dose of 10 mg Dimebon (tablet) will be assessed on Day 5 during the daily administration of omeprazole(40 mg, Day 1-12) in subjects with a CYP2D6 extensive and poor metabolizer status based on genotyping as screening
Study Arms  ICMJE
  • Experimental: Period 1
    Intervention: Drug: Dimebon alone
  • Experimental: Period 2
    Intervention: Drug: Dimebon + Ketoconazole
  • Experimental: Period 3
    Intervention: Drug: Dimebon + Omeprazole
Publications *Not Provided


*   Includes publications given by the data provider as well as publications
identified by ClinicalTrials.gov Identifier (NCT Number) in Medline.
 
Recruitment Information
Recruitment Status  ICMJE Completed
Estimated Enrollment  ICMJE
 (submitted: July 1, 2009)
24
Original Estimated Enrollment  ICMJE Same as current
Actual Study Completion Date  ICMJE October 2009
Actual Primary Completion DateOctober 2009   (Final data collection date for primary outcome measure)
Eligibility Criteria  ICMJE

Inclusion Criteria:

  • Subjects who are willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.
  • Subjects must have either a CYP2D6 EM (n=12) or PM (n=12) status based on genotyping at screening.
  • Subjects must have a CYP2C19 EM status based on status at screening.

Exclusion Criteria:

  • Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease.
  • Subjects with any history of a previous seizure or convulsion or significant head trauma.
  • Subjects specifically allergic to imidazole antifungal agents.
  • Subjects specifically allergic to omeprazole or other proton pump inhibitors.
  • Any condition possibly affecting drug absorption (eg, gastrectomy).
  • Subjects with hypersensitivity reactions to Dimebon or other antihistamines.
  • Consumption of grapefruit or grapefruit containing products within 7 days prior to the first dose of study medication.
  • Subjects currently taking omeprazole, other proton pump inhibitors, antacids, H2-blockers or CYP2C19 inhibitors.
  • Pregnant or nursing females; females of childbearing potential who are unwilling or unable to use an acceptable method of nonhormonal contraception as outlined in this protocol from at least 14 days prior to the first dose of study medication.
Sex/Gender  ICMJE
Sexes Eligible for Study:All
Ages  ICMJE 18 Years to 55 Years   (Adult)
Accepts Healthy Volunteers  ICMJE Yes
Contacts  ICMJE Contact information is only displayed when the study is recruiting subjects
Listed Location Countries  ICMJE United States
Removed Location Countries  
 
Administrative Information
NCT Number  ICMJE NCT00931073
Other Study ID Numbers  ICMJE B1451017
Has Data Monitoring CommitteeNo
U.S. FDA-regulated ProductNot Provided
IPD Sharing Statement  ICMJE Not Provided
Responsible PartyDirector, Clinical Trial Disclosure Group, Pfizer, Inc.
Study Sponsor  ICMJE Pfizer
Collaborators  ICMJE Medivation, Inc.
Investigators  ICMJE
Study Director:Pfizer CT.gov Call CenterPfizer
PRS AccountPfizer
Verification DateNovember 2009

ICMJE     Data element required by the

International Committee of Medical Journal Editors
and the
World Health Organization ICTRP

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Contact a representative by phone, email, or visiting the study website. Please see the references below:

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