A Study To Understand How Radiolabelled PF-04449913 Is Taken Up By The Body, Broken Down And Then Removed From The Body

A Phase One Open-Label Single-Radiolabeled Dose Study To Investigate The Absorption, Metabolism, And Excretion Of [14C] PF-04449913 In Healthy Male Volunteers

The study aims to understand, using radiolabelled PF-04449913, how this compound is modified by the body once it is absorbed. The study also aims to understand how much of the compound is broken down and how much leaves the body unchanged.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Drug: [14C] PF-04449913

• Study Type: Interventional
• Enrollment (Actual): 6
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Wisconsin
    • Madison, Wisconsin, United States, 53704
      • Pfizer Investigational Site

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: Male

Description

Inclusion Criteria:

• Healthy male 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).
• Subjects enrolled in a previous radionucleotide study or who have received radiotherapy within 12 months prior to screening or such that total radioactivity would exceed acceptable dosimetry.
• A positive urine drug screen or urine cotinine test
• 12 lead ECG demonstrating QTc >450 or a QRS interval >120 msec 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 family history of myocardial infarction, congenital long QT syndrome, torsades de pointes or clinically significant ventricular arrhythmias. Subjects should be within normal range of potassium, magnesium and calcium at screening.

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Treatment	Drug: [14C] PF-04449913; Single oral dose of 100 mg PF-04449913 + 100µCi of [14C] PF-04449913

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - 8)]	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).	7 days
Maximum Observed Plasma Concentration (Cmax)		7 days
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - 8)] for total radioactivity related to drug product	AUC (0 - 8)= Area under the plasma radioactivity 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).	7 days
Maximum Observed Plasma Concentration (Cmax) for total radioactivity related to drug product		7 days
Cumulative recovery of radioactivity in excreta	Total percentage of dosed radioactivity recovered in urine and feces	7 days
Radioactivity in blood	Total percentage of radioactivity in blood related to drug product	7 days
Urine PF-04449913 PK parameters	Measure of renal clearance (CLr), amount excreted unchanged in urine (Ae) and the fraction of dose excreted unchanged in urine (AE%)	7 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast)	Area under the plasma concentration time-curve from zero to the last measured concentration (AUClast)	7 days
Apparent Oral Clearance (CL/F)	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 days
Plasma Decay Half-Life (t1/2)	Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.	7 days
Apparent Volume of Distribution (Vz/F)	plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction absorbed.	7 days

Collaborators and Investigators

• Sponsor: Pfizer

Publications and helpful links

Helpful Links

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

Study record dates

Study Major Dates

• Study Start: May 1, 2014
• Primary Completion (Actual): June 1, 2014
• Study Completion (Actual): June 1, 2014

Study Registration Dates

• First Submitted: April 8, 2014
• First Submitted That Met QC Criteria: April 8, 2014
• First Posted (Estimate): April 10, 2014

Study Record Updates

• Last Update Posted (Estimate): July 22, 2014
• Last Update Submitted That Met QC Criteria: July 21, 2014
• Last Verified: July 1, 2014

More Information

Terms related to this study

• Keywords: Pharmacokinetics; Mass Balance; PF-04449913; Radiolabel; [14C]PF-04449913; Human ADME
• Other Study ID Numbers: B1371009