This study will investigate whether concurrent administration of rabeprazole, an antacid known as a proton pump inhibitor, alters the absorption of the drug palbociclib when given as one of six experimental formulations.
This will be a 6 cohort study investigating one experimental formulation of palbociclib in each of the six cohorts of 10 healthy subjects. Each cohort will receive two treatments in a fixed-sequence. In Period 1, all subjects will receive a single 125mg dose of palbociclib alone and undergo serial pharmacokinetic blood sampling for up to 120 hours post-dose. In Period 2, all subjects will receive daily 40mg doses of Rabeprazole for 7 consecutive days, and approximately 4 hours after the Day 7 rabeprazole dose each subject will receive a single 125mg dose of palbociclib. Subjects will undergo serial pharmacokinetic blood sampling up to 120 hours post-dose.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Enrollment
60
In Period 1 of each Cohort, a single 125 mg dose of palbociclib will be administered alone in a fasted state, and subjects will undergo serial pharmacokinetic blood sampling for up to 120 hours post-dose.
In Period 2 of each Cohort, subjects will receive daily 40 mg oral doses of the proton pump inhibitor rabeprazole on 7 consecutive days. Approximately 4 hours after the last rabeprazole dose a single 125 mg dose of palbociclib will be administered alone in a fasted state, and subjects will undergo serial pharmacokinetic blood sampling for up to 120 hours post-dose.
MRA Clinical Research - Phase 1
Miami, Florida, United States
Miami Research Associates, LLC
South Miami, Florida, United States
MRA Clinical Research, LLC
South Miami, Florida, United States
AUCinf
Area under the concentration-time curve from time zero to infinity.
Time frame: Pre-dose to 120 hours post-dose
Cmax
Maximum observed plasma concentration
Time frame: Pre-dose to 120 hours post-dose
AUClast
Area under the concentration-time curve from time zero to the time of the last quantifiable concentration.
Time frame: Pre-dose to 120 hours post-dose
CL/F
Apparent oral clearance from plasma
Time frame: Pre-dose to 120 hours post-dose
Tmax
Time of the maximum observed concentration post-dose.
Time frame: Pre-dose to 120 hours post-dose
Vz/F
Apparent volume of distribution
Time frame: Pre-dose to 120 hours post-dose
t1/2
Terminal phase half-life
Time frame: Pre-dose to 120 hours post-dose
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