A Phase 1 Study Of PF-00868554 In Hepatitis C Virus (HCV) Positive Patients

January 2, 2014 updated by: Pfizer

A Phase 1, Randomized, Double Blind (3rd Party Open), Placebo-controlled, Sequential Group, Multicentre Study To Evaluate The Multiple Dose Safety, Tolerability, Pharmacokinetics And Pharmacodynamics, of PF-00868554 in Hepatitis C Virus (HCV) Positive Otherwise Healthy Patient Volunteers

Assess the safety, tolerability and pharmacokinetics of multiple oral doses of PF-00868554 in HCV positive patient volunteers

Study Overview

Status

Status

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

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.
32

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

  • Belgium
      • Bruxelles, Belgium, 1070
        • Pfizer Investigational Site
  • Germany
      • Berlin, Germany, 10117
        • Pfizer Investigational Site
      • Berlin, Germany, 12351
        • Pfizer Investigational Site
  • United Kingdom
      • Dundee, United Kingdom, DD1 9SY
        • 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

14 years to 61 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • HCV RNA ≥ 100,000 IU/mL at screening
  • Genotype 1a or 1b

Exclusion Criteria:

  • Current or prior treatment with IFN and/or RBV
  • Evidence of decompensated liver disease

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: Treatment
  • Allocation: Randomized
  • Interventional Model: Single Group 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: 1
Drug: PF-00868554
300 mg BID
Drug: PF-00868554
450 mg BID
Drug: PF-00868554
100 mg BID
Drug: PF-00868554
300 mg TID
Experimental: 2
Drug: PF-00868554
300 mg BID
Drug: PF-00868554
450 mg BID
Drug: PF-00868554
100 mg BID
Drug: PF-00868554
300 mg TID
Experimental: 3
Drug: PF-00868554
300 mg BID
Drug: PF-00868554
450 mg BID
Drug: PF-00868554
100 mg BID
Drug: PF-00868554
300 mg TID
Experimental: 4
Drug: PF-00868554
300 mg BID
Drug: PF-00868554
450 mg BID
Drug: PF-00868554
100 mg BID
Drug: PF-00868554
300 mg TID
Placebo Comparator: 5
Drug: Placebo
Placebo

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): Day 1
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose for twice daily dose; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8 hours post-dose for three times daily dose
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose for twice daily dose; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8 hours post-dose for three times daily dose
Maximum Observed Plasma Concentration (Cmax): Day 8
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax): Day 1
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose for twice daily dose; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8 hours post-dose for three times daily dose
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose for twice daily dose; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8 hours post-dose for three times daily dose
Time to Reach Maximum Observed Plasma Concentration (Tmax): Day 8
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose
Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau): Day 1
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose for twice daily dose; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8 hours post-dose for three times daily dose
Area under the plasma concentration time-curve from time zero to end of dosing interval (tau), where dosing interval is 8 hours for three times daily regimens and 12 hours for the twice daily regimens.
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose for twice daily dose; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8 hours post-dose for three times daily dose
Area Under the Curve From Time Zero to End of Dosing Interval (AUCtau): Day 8
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose
Area under the plasma concentration time-curve from time zero to end of dosing interval (tau), where dosing interval is 8 hours for three times daily regimens and 12 hours for the twice daily regimens.
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose
Minimum Observed Plasma Trough Concentration (Cmin): Day 8
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
The Cmin of PF-04691502 was assessed following repeated oral dose administration for 8 days (multiple dose PK).
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Plasma Decay Half-Life (t1/2): Day 8
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half. The t1/2 of PF-04691502 was assessed following repeated oral dose administration for 8 days (multiple dose PK).
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Observed Accumulation Ratio (Rac)
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose on Day 1; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Rac was calculated as, area under the curve from time zero to end of dosing interval on Day 8 (AUCtau) divided by area under the curve from time zero to end of dosing interval on Day 1(AUCtau).
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose on Day 1; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Observed Accumulation Ratio for Cmax (Rac Cmax)
Time Frame: 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose on Day 1; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Rac Cmax was calculated as, maximum observed plasma concentration on Day 8 (Cmax) divided by maximum observed plasma concentration on Day 1(Cmax).
0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12 hours post-dose on Day 1; 0 hours (pre-dose), 0.5, 1, 1.5, 2, 3, 4, 5, 6, 8, 12, 24, 36, 48 hours post-dose on Day 8
Cumulative Amount of Drug Recovered Unchanged in Urine (Ae): Day 1
Time Frame: 0 to 12 hours, 12 to 24 hours post-dose
Ae is the cumulative amount of drug recovered unchanged in urine during the dosing interval, where the dosing interval is 12 hours. Cumulative amount was calculated as sum of urine drug concentration in sample volume for each collection interval. Sample volume = (urine weight in gram [g]/1.020), where 1.020 g/mL is the approximate specific gravity of urine.
0 to 12 hours, 12 to 24 hours post-dose
Cumulative Amount of Drug Recovered Unchanged in Urine (Ae): Day 8
Time Frame: 0 to 12 hours, 12 to 24 hours post-dose
Ae is the cumulative amount of drug recovered unchanged in urine during the dosing interval, where the dosing interval is 12 hours. Cumulative amount was calculated as sum of urine drug concentration in sample volume for each collection interval. Sample volume = (urine weight in gram [g]/1.020), where 1.020 g/mL is the approximate specific gravity of urine.
0 to 12 hours, 12 to 24 hours post-dose
Percent of Dose Recovered Unchanged in Urine (Ae%): Day 1
Time Frame: 0 to 12 hours, 12 to 24 hours post-dose
Percent of dose recovered unchanged in urine during the dosing interval=100*(cumulative amount of drug recovered unchanged in urine [Ae] divided by dose), where the dosing interval is 12 hours.
0 to 12 hours, 12 to 24 hours post-dose
Percent of Dose Recovered Unchanged in Urine (Ae%): Day 8
Time Frame: 0 to 12 hours, 12 to 24 hours post-dose
Percent of dose recovered unchanged in urine during the dosing interval=100 (cumulative amount of drug recovered unchanged in urine [Ae] divided by dose), where the dosing interval is 12 hours.
0 to 12 hours, 12 to 24 hours post-dose
Renal Clearance (CLr): Day 1
Time Frame: 0 to 12 hours, 12 to 24 hours post-dose
Renal clearance was calculated as cumulative amount of drug recovered unchanged in urine during the dosing interval (Ae) divided by area under the plasma concentration time-curve from time zero to end of dosing interval (AUCtau), where dosing interval is 12 hours.
0 to 12 hours, 12 to 24 hours post-dose
Renal Clearance (CLr): Day 8
Time Frame: 0 to 12 hours, 12 to 24 hours post-dose
Renal clearance was calculated as cumulative amount of drug recovered unchanged in urine during the dosing interval (Ae) divided by area under the plasma concentration time-curve from time zero to end of dosing interval (AUCtau), where dosing interval is 12 hours.
0 to 12 hours, 12 to 24 hours post-dose
Ratio of 6 Beta-Hydroxyl Cortisol to Cortisol: Day 1
Time Frame: -24 to 0 hours (pre-dose) on Day 1 (Day 0)
Urine 6 beta-hydroxyl cortisol and cortisol concentrations were measured using high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS).
-24 to 0 hours (pre-dose) on Day 1 (Day 0)
Ratio of 6 Beta-Hydroxyl Cortisol to Cortisol: Day 8
Time Frame: 0 to 24 hours post-dose on Day 8
Urine 6 beta-hydroxyl cortisol and cortisol concentrations were measured using high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS).
0 to 24 hours post-dose on Day 8
Day 8 to Day 1 Ratio of the 6 Beta-Hydroxyl Cortisol to Cortisol Ratios
Time Frame: -24 to 0 hours (pre-dose) on Day 1 (Day 0); 0 to 24 hours post-dose on Day 8
Urine 6 beta-hydroxyl cortisol and cortisol concentrations were measured using high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS).
-24 to 0 hours (pre-dose) on Day 1 (Day 0); 0 to 24 hours post-dose on Day 8

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
Change From Baseline in Plasma Log10 Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) Viral Load at Day 8
Time Frame: Baseline, Day 8
HCV RNA levels were determined using the Abbott RealTime HCV polymerase chain reaction (PCR) assay (lower limit of detection [LOD] = 12 international unit per milliliter [IU/mL]). Baseline value calculated as the average of the screening Day 0 and Day 1 pre-dose measurements. The plasma HCV RNA data was log10 transformed, and the change in log10 HCV RNA at Day 8 post-dose from baseline was calculated.
Baseline, Day 8
Number of Participants With Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) Variants Resistant to PF-00868554
Time Frame: Screening up to Day 8
Screening up to Day 8

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.

General Publications

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, 2007

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.
June 1, 2008

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.
June 1, 2008

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).
March 6, 2007

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.
March 7, 2007

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.
March 8, 2007

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.
February 17, 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.
January 2, 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.
January 1, 2014

More Information

Terms related to this study

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.
  • A8121002

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