A Phase 1 Study To Evaluate The Pharmacokinetics, Safety, And Tolerability Of Dimebon [PF-01913539] In Japanese And Western Healthy Subjects

Alzheimer's Disease Clinical Trial

Official title:

A Phase 1, Randomized, Subject- And Investigator-Blind, Sponsor-Open, Placebo-Controlled, Parallel-Cohort, Single-Dose Escalation, And Multiple-Dose Titration Study To Evaluate The Pharmacokinetics, Safety, And Tolerability Of Dimebon [PF-01913539] In Japanese And Western Healthy Subjects

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT00825084
• Other study ID #: B1451014
• Status: Completed
• Phase: Phase 1
• First received: January 12, 2009
• Last updated: April 22, 2011
• Start date: February 2009
• Est. completion date: May 2009

Study information

• Verified date: April 2011
• Source: Pfizer
• Contact: n/a
• Is FDA regulated: No
• Health authority: United States: Food and Drug Administration
• Study type: Interventional

Clinical Trial Summary

This study is to characterize the pharmacokinetics of single and multiple oral doses of Dimebon in Japanese healthy subjects. This study is also to evaluate the safety and tolerability of single and multiple oral doses of Dimebon in Japanese healthy subjects. The secondary objective of this study is to compare the pharmacokinetics, safety and tolerability of single and multiple oral doses of Dimebon in Japanese and Western healthy subjects.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 45
• Est. completion date: May 2009
• Est. primary completion date: May 2009
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: Both
• Age group: 18 Years to 55 Years

Eligibility

Inclusion Criteria:

• Healthy male and/or female subjects between the ages of 18 and 55 years, inclusive (Healthy is defined as no clinically relevant abnormalities identified by a detailed medical history, full physical examination, including blood pressure and pulse rate measurement, 12-lead ECG, and clinical laboratory tests).

• Body Mass Index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight within the range of 50 to 100 kg.

• An informed consent document signed and dated by the subject or a legally-acceptable representative.

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

• Japanese subjects must have four Japanese grandparents who were born in Japan.

Exclusion Criteria:

• Asian or Polynesian subjects in Western subject groups.

• Any condition possibly affecting drug absorption (e.g., gastrectomy, active peptic ulcer within last 3 months).

• History of regular alcohol consumption exceeding an average of 7 drinks/week for females and 14 drinks/week for men (1 drink = 5 ounces (150 mL) of wine or 12 ounces (360 mL) of beer or 1.5 ounces (45 mL) of hard liquor) within 6 months of screening.

• Subjects who, by history, smoke more than 5 cigarettes per day.

• Treatment with an investigational drug within 30 days or 5 half-lives (whichever is longer) preceding the first dose of study medication.

• 12-lead ECG demonstrating QTc >450 msec at screening. If QTc exceeds 450 msec, the ECG may be repeated two more times and the average of the three QTc values should be used to determine the subject's eligibility.

• 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.

• Use of prescription or nonprescription drugs, vitamins and dietary supplements, within 7 days or 5 half-lives (whichever is longer) of the first dose of study medication. Herbal supplements and hormonal methods of contraception (including oral and transdermal contraceptives, injectable progesterone, progestin subdermal implants, progesterone-releasing IUDs, postcoital contraceptive methods) and hormone replacement therapy must be discontinued 28 days prior to the first dose of study medication. Depo-Provera® must be discontinued at least 6 months prior to the first dose of study medication. As an exception, acetaminophen/paracetamol may be used at doses of = 2 grams/day. Limited use of non-prescription medications that are not believed to affect subject safety or the overall results of the study may be permitted on a case-by-case basis following approval by the sponsor.

Study Design

Allocation: Randomized, Endpoint Classification: Pharmacokinetics Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Investigator), Primary Purpose: Treatment

Related Conditions & MeSH terms

• Alzheimer Disease
• Alzheimer's Disease
• Huntington Disease
• Huntington's Disease

Intervention

Drug:
• Dimebon
dose escalation of single oral doses of 5, 10 and 20 mg
• Dimebon
dose escalation of single oral doses of 5, 10 and 20 mg
• Dimebon
10 mg TID of Dimebon for 7 days followed by 20 mg TID of Dimebon for 7 days
• Dimebon
10 mg TID of Dimebon for 7 days followed by 20 mg TID of Dimebon for 7 days

Locations

Country	Name	City	State
United States	Pfizer Investigational Site	Glendale	California

Sponsors (2)

Lead Sponsor	Collaborator
Pfizer	Medivation, Inc.

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	plasma drug concentrations		72 hours post last dose	No
Secondary	Safety will be including physical/neurological examination findings, clinical safety laboratory assessments, 12-lead ECGs, vital sign measurements and adverse event monitoring		72 hours post last dose	Yes

External Links

•   To obtain contact information for a study center near you, click here.