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Study To Determine The Effect Of Food And Strong CYP3A4 Enzyme Inhibitor On PF-04449913 Drug Levels

This study has been completed.
Information provided by (Responsible Party):
Pfizer Identifier:
First received: December 11, 2012
Last updated: April 8, 2013
Last verified: April 2013
The study aims to determine what effect a high fat meal will have on the drug exposure of PF-04449913. The study also aims to determine the effect of a strong enzyme (CYP3A4) inhibitor on drug exposure of PF-04449913.

Condition Intervention Phase
Healthy Volunteers
Drug: PF-04449913, ketoconazole
Phase 1

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Basic Science
Official Title: A Phase 1, Open Label Study In Healthy Subjects To Estimate The Effect Of Food And The Drug-Drug Interaction Potential Of Ketoconazole On PF-04449913 Pharmacokinetics

Resource links provided by NLM:

Further study details as provided by Pfizer:

Primary Outcome Measures:
  • Maximum Observed Plasma Concentration (Cmax) [ Time Frame: 8 days ]
  • Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - 8)] [ Time Frame: 8 days ]

Secondary Outcome Measures:
  • Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast) [ Time Frame: 8 days ]
  • Apparent Oral Clearance (CL/F) [ Time Frame: 8 days ]
  • Time to Reach Maximum Observed Plasma Concentration (Tmax) [ Time Frame: 8 days ]
  • Apparent Volume of Distribution (Vz/F) [ Time Frame: 8 days ]
  • Plasma Decay Half-Life (t1/2) [ Time Frame: 8 days ]

Enrollment: 14
Study Start Date: December 2012
Study Completion Date: February 2013
Primary Completion Date: February 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Sequence 1 Drug: PF-04449913, ketoconazole
Subjects receive a 200 mg oral dose of PF-04449913 under fasted conditions with washout, then single 200 mg oral dose of PF-04449913 under fed with washout and finally a single 200 mg dose 0f PF-04449913 following dosing to steady state with ketoconazole
Experimental: Sequence 2 Drug: PF-04449913, ketoconazole
Subjects receive a 200 mg oral dose of PF-04449913 under fed conditions with washout, then single 200 mg oral dose of PF-04449913 under fasted with washout and finally a single 200 mg dose of PF-04449913 following dosing to steady state with ketoconazole


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

Inclusion Criteria:

  • Healthy male and 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 >50 kg (110 lbs).
  • An informed consent document signed and dated by the subject.
  • Subjects who are willing and able to comply with scheduled visits, treatment plan, laboratory tests, and other study procedures.

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).
  • A positive urine drug screen
  • 12-lead ECG demonstrating QTc >450 msec or a QRS interval >120 msec at Screening. If QTc exceeds 450 msec, or QRS exceeds 120 msec, the ECG should be repeated two more times and the average of the three QTc values should be used to determine the subject's eligibility. Subjects with one of the following currently in the past 6 months: myocardial infarction, congenital long QT syndrome, torsades de pointes or clinically significant ventricular arrhythmias.
  • Pregnant or nursing females and females of childbearing potential including those with tubal ligation. To be considered for enrollment, women of 45 to 55 years of age who are postmenopausal (defined as being amenorrheic for at least 2 years) must have confirmatory FSH test results at Screening.
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Please refer to this study by its identifier: NCT01749085

United States, Connecticut
Pfizer Investigational Site
New Haven, Connecticut, United States, 06511
Sponsors and Collaborators
Study Director: Pfizer Call Center Pfizer
  More Information

Additional Information:
Responsible Party: Pfizer Identifier: NCT01749085     History of Changes
Other Study ID Numbers: B1371010
Study First Received: December 11, 2012
Last Updated: April 8, 2013

Keywords provided by Pfizer:
Food Effect
Drug-drug interaction
CYP3A4 inhibitor

Additional relevant MeSH terms:
Antifungal Agents
Anti-Infective Agents
14-alpha Demethylase Inhibitors
Cytochrome P-450 Enzyme Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Steroid Synthesis Inhibitors
Hormone Antagonists
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Cytochrome P-450 CYP3A Inhibitors processed this record on May 25, 2017