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Trial record 4 of 11 for:    PF-06649751

A Phase I Trial to Investigate the Safety and Tolerability of PF-06649751

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details.
 
ClinicalTrials.gov Identifier: NCT01981694
Recruitment Status : Completed
First Posted : November 11, 2013
Last Update Posted : March 26, 2014
Sponsor:
Information provided by (Responsible Party):
Pfizer

Brief Summary:
This study will determine the safety and tolerability of PF-06649751 given orally to healthy volunteers. To determine the optimal dose for future studies, the concentration of the drug over time will be determined by periodic blood samples. The rate of eye blinks will be measured as an indicator of PF-06649751 action on the receptors of interest in the brain.

Condition or disease Intervention/treatment Phase
Healthy Drug: PF-06649751 Phase 1

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 18 participants
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Basic Science
Official Title: A Phase 1, Double Blind, Sponsor Open, Randomized, Placebo Controlled, Crossover, Single Oral Dose Escalation Study to Investigate the Safety, Tolerability, Pharmacokinetics and Pharmacodynamics of PF-06649751 in Healthy Subjects
Study Start Date : November 2013
Actual Primary Completion Date : February 2014
Actual Study Completion Date : February 2014

Arm Intervention/treatment
Experimental: Single ascending doses Drug: PF-06649751
Single doses, given by oral solution, starting at 0.25 mg up to a possible maximum of 7.5 mg. The subject will have been fasted for 10 hours prior to the single dose. For each dosing period, 3 subjects will be given a placebo as a comparator. One dose will be given in the fed state.

Experimental: Measurement of eye blink rate Drug: PF-06649751
It is believed that the maximum tolerated dose of this compound the eye blink rate (EBR) will also increase. This arm will use EBR measurement technology to verify this hypothesis. In each dosing period, 5 subjects will be given a placebo as a comparator.




Primary Outcome Measures :
  1. Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
    Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast)

  2. Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - 8)] [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
    AUC (0 - 8)= Area under the plasma concentration versus time curve (AUC) from time zero (pre-dose) to extrapolated infinite time (0 - 8). It is obtained from AUC (0 - t) plus AUC (t - 8).

  3. Maximum Observed Plasma Concentration (Cmax) [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
  4. Time to Reach Maximum Observed Plasma Concentration (Tmax) [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
  5. Plasma Decay Half-Life (t1/2) [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
    Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.

  6. Apparent Oral Clearance (CL/F) [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
    Clearance of a drug is a measure of the rate at which a drug is metabolized or eliminated by normal biological processes. Clearance obtained after oral dose (apparent oral clearance) is influenced by the fraction of the dose absorbed. Clearance was estimated from population pharmacokinetic (PK) modeling. Drug clearance is a quantitative measure of the rate at which a drug substance is removed from the blood.

  7. Apparent Volume of Distribution (Vz/F) [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24, 32, 48, 72 hours post-dose ]
    Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction absorbed.

  8. Eye Blink Rate [ Time Frame: 0, 0.5, 1, 1.5, 2, 4, 6, 8, 10, 12, 16, 24 hours post-dose ]
    Measurement of eye blink rate for a given dose at time of predicted maximum blood concentration of the compound



Information from the National Library of Medicine

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

Inclusion Criteria:

  • Healthy male and/or female subjects of non-childbearing potential between the ages of 18 and 55 years
  • Female subjects of non childbearing potential that meet at least one of the following criteria: Achieved postmenopausal status, defined as: cessation of regular menses for at least 12 consecutive months with no alternative pathological or physiological cause; and have a serum follicle stimulating hormone (FSH) level confirming the postmenopausal status; Have undergone a documented hysterectomy and/or bilateral oophorectomy; Have medically confirmed ovarian failure.

Exclusion Criteria:

  • Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at time of dosing).
  • Any condition possibly affecting drug absorption.
  • Subjects with epilepsy, or history of epilepsy, or conditions that lower seizure threshold, seizures of any etiology (including substance or drug withdrawal), or who have increased risk of seizures as evidenced by history of EEG with epileptiform activity. Subjects with a history of childhood seizures, and history of head trauma with loss of consciousness requiring hospitalization overnight will be excluded as well.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT01981694


Locations
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United States, Connecticut
Pfizer Investigational Site
New Haven, Connecticut, United States, 06511
Sponsors and Collaborators
Pfizer
Investigators
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Study Director: Pfizer CT.gov Call Center Pfizer

Additional Information:
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Responsible Party: Pfizer
ClinicalTrials.gov Identifier: NCT01981694    
Other Study ID Numbers: B7601001
First Posted: November 11, 2013    Key Record Dates
Last Update Posted: March 26, 2014
Last Verified: March 2014
Keywords provided by Pfizer:
Phase 1
Randomized
Double Blind
Placebo-Controlled
Single-Dose Escalation
Safety
Tolerability
PK
PD
PF-06649751