A Study of the Safety, Tolerability, Pharmacokinetics, And Effects On Histamine-Induced Wheal Of PF-05180999 In Healthy Adults

May 6, 2014 updated by: Pfizer

A Phase 1, Placebo-Controlled, Crossover, Subject- And Investigator-Blind, Sponsor-Open Study To Evaluate The Safety, Tolerability, Pharmacokinetics, And Effects On Histamine-Induced Wheal Of A Modified-Release Formulation Of PF-05180999 In Healthy Adult Subjects

PF-05180999 is a phosphodiesterase-2 inhibitor that is hypothesized to be able to reduce vascular permeability. The purpose of this study is to evaluate the safety, tolerability, pharmacokinetics, and effects on histamine-induced wheal of single doses of PF-05180999 in healthy adult subjects. Histamine-induced wheals are biomarkers of vascular permeability.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
31

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • United States
    • Minnesota
      • St. Paul, Minnesota, United States, 55114
        • Pfizer Investigational Site

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 55 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

Male

Description

Inclusion Criteria:

  • Healthy male subjects between the ages of 18 and 55 years
  • No history of clinically-relevant atopic or dermatological disease
  • Positive reaction to intradermal injection of histamine

Exclusion Criteria:

  • Subjects with screening laboratory test results that deviate from the upper and/or lower limits of the reference or acceptable range. The exception is that all liver function tests must not exceed the upper limit of normal.
  • Subjects with evidence of, or history of, hepatic disorder, including acute or chronic hepatitis B or hepatitis C
  • Intolerance to intradermal histamine injection.
  • Subjects with dark skin (Part B only).

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Arm A1
Part A of study to assess safety, tolerability, and pharmacokinetics of PF-05180999
Drug: PF-05180999
Ascending single oral doses of 120, 240, and 420 mg modified-release tablets
Placebo Comparator: Arm A2
Part A of study to assess safety, tolerability, and pharmacokinetics of PF-05180999 relative to placebo
Drug: Placebo
Placebo tablets
Experimental: Arm B1
Part B of study to assess effects of PF-05180999 on histamine-induced wheal
Drug: 120 mg MR PF-05180999
Single 120 mg dose administered as modified release formulation
Experimental: Arm B2
Part B of study to assess effects of PF-05180999 on histamine-induced wheal
Drug: 360 mg MR PF-05180999
Single 360 mg dose administered as modified release formulation
Experimental: Arm B3
Positive control to ensure histamine-induced wheal assay integrity
Drug: 10 mg cetirizine
Single 10 mg dose of cetirizine
Experimental: Arm B4
Placebo control
Drug: Placebo
Placebo tablets

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Maximum Observed Plasma Concentration (Cmax)
Time Frame: 0-72 hours post-dose
Maximum observed plasma concentration
0-72 hours post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax)
Time Frame: 0-72 hours post-dose
Time when Cmax occurred
0-72 hours post-dose
Area Under the Concentration-Time Curve From Time Zero to Last Quantifiable Concentration (AUClast)
Time Frame: 0-72 hours post-dose
Measure of drug absorption and drug exposure
0-72 hours post-dose
Area Under the Concentration-Time Curve From Time Zero Extrapolated to Infinity (AUCinf)
Time Frame: 0-infinity hours post-dose
Measure of drug absorption and drug exposure
0-infinity hours post-dose
Plasma Half-Life (t1/2)
Time Frame: 0-72 hours post-dose
Time for the plasma concentration to decrease by one-half.
0-72 hours post-dose
Area Under the Effect Curve (AUEC) for Histamine-Induced Wheal
Time Frame: 2-12 hours post-dose
Measure of drug effect
2-12 hours post-dose

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Dose-response, exposure-response, and maximum response for PF-05180999 against histamine-induced wheal
Time Frame: 0-72 hours post-dose
Measures of drug effect
0-72 hours post-dose
Area Under the Effect Curve (AUEC) for histamine-induced flare; Dose-response, exposure-response, and maximum response for PF-05180999 against histamine-induced flare
Time Frame: 0-72 hours post-dose
Measures of drug effect
0-72 hours post-dose

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2014

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
April 1, 2014

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
April 1, 2014

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
November 5, 2013

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 5, 2013

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
November 11, 2013

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
May 8, 2014

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 6, 2014

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • B3441009

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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