A Study Comparing the Plasma Drug Exposure of an Oral Dose of Palbociclib (PD-0332991) to an Intravenous Dose of Palbociclib (PD-0332991)

A Phase 1, Single Dose, Fixed Sequence, 2-Period Cross-Over Absolute Oral Bioavailability Study In Healthy Volunteers Comparing Oral To Intravenous Administration Of PD-0332991

The purpose of this study is to determine approximately what percentage of an orally administered dose of PD-0332991 is absorbed from the gastrointestinal tract into the systemic circulation. This approximation is made by comparing the plasma pharmacokinetics of a 125 mg oral dose of PD-0332991 to the plasma pharmacokinetics of a 50 mg intravenous dose of PD-0332991 administered as a 4-hour infusion.

Inclusion Criteria:

1. Healthy male or female of non-childbearing potential between the ages of 18 and 55 years of age.
2. A body mass index (BMI) between 17.5 and 30.5 kg/m2, and a total body weight greater than 50kg (110 lbs)

Exclusion Criteria:

1. Any condition which could possibly affect drug absorption.
2. Pregnancy or actively nursing females, or females of childbearing potential.
3. A positive urine drug screen.