A Study To Evaluate The Effect Of Rifampin On Pharmacokinetics Of PF-06463922 In Healthy Volunteers

A Phase One, Open Label, Two-period, Two-treatment, Fixed Sequence, Cross-over Study To Estimate The Effect Of Multiple Dose Rifampin On The Single Dose Pharmacokinetics Of Pf-06463922 In Healthy Volunteers.

The purpose of this study is to estimate the effect of rifampin on the single dose PK of PF-06463922.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Drug: PF-06463922; Drug: rifampin

Detailed Description

This will be a Phase 1, open-label, 2-period, 2-treatment, fixed-sequence, cross-over study in approximately 12 healthy subjects employing administration of a single oral dose of PF-06463922 in the fasted state alone, and with multiple dosing of rifampin 600 mg once a day to estimate the effect of multiple dose rifampin on the single dose PK of PF-06463922.

• Study Type: Interventional
• Enrollment (Actual): 12
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • Connecticut
    • New Haven, Connecticut, United States, 06511
      • Pfizer New Haven Clinical Research Unit

Participation Criteria

Eligibility Criteria

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

Description

Inclusion Criteria:

• Healthy female subjects of non-childbearing potential and/or male subjects who, at the time of screening, are between the ages of 18 and 55 years, inclusive
• Body Mass Index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lbs)

Exclusion Criteria:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurologic, or allergic disease
• Any condition possibly affecting drug absorption
• Positive urine drug screen
• History of HIV, Hep B or Hep C
• History of regular alcohol consumption
• History of cardiac arrhythmia, history of AV block, history of symptomatic bradycardia, history of QTc prolongation
• History of pancreatitis or hyperlipidemia, elevated lipase

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Interventional Model: Crossover Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: all subjects; subjects will receive a 100 mg single oral dose of PF-06463922 followed by a 100 mg single dose of PF-06463922 combined with 600 mg QD dose of rifampin with at least 10 days of washout period between two PF-06463922 doses.	Drug: PF-06463922; 100 mg oral dose on day 1 in period 1 and on day 8 in period 2; Other Names: lorlatinib; Drug: rifampin; 600 mg QD from day 1 to day 12 in period 2.; Other Names: rifampicin

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Plasma AUCinf for PF-06463922 Given Alone and With Rifampin	AUCinf is the plasma area under the plasma concentration-time profile from time 0 extrapolated to infinite time. The pharmacokinetics (PK) parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Cmax for PF-06463922 Given Alone and With Rifampin	Cmax is the maximum observed plasma concentration. PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Plasma AUClast for PF-06463922 Given Alone and With Rifampin	AUClast is the plasma area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Tmax for PF-06463922 Given Alone and With Rifampin	Tmax is the time for maximum observed plasma concentration (Cmax). The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma t1/2 for PF-06463922 Given Alone and With Rifampin	Terminal plasma half-life (t1/2) is the time measured for the plasma concentration of drug to decrease by one half. The PK parameter analysis population is defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma CL/F for PF-06463922 Given Alone and With Rifampin	CL/F is the apparent oral clearance. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Vz/F for PF-06463922 Given Alone and With Rifampin	Vz/F is the apparent volume of distribution (only after single dose).The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg administration with rifampin in Period 2.
Plasma AUClast for PF-06895751 When PF-06463922 Given Alone and With Rifampin	AUClast was the plasma area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period. PF-06895751 was the metabolite of PF-06463922.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma AUCinf for PF-06895751 When PF-06463922 Given Alone and With Rifampin	AUCinf was the area under the plasma concentration-time profile from time 0 extrapolated to infinite time. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period. PF-06895751 was the metabolite of PF-06463922.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Tmax for PF-06895751 When PF-06463922 Given Alone and With Rifampin.	Tmax was the time for maximum observed plasma concentration (Cmax). The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period. PF-06895751 was the metabolite of PF-06463922.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma t1/2 for PF-06895751 When PF-06463922 Given Alone and With Rifampin	T1/2 was the terminal plasma half-life. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period. PF-06895751 was the metabolite of PF-06463922.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Cmax for PF-06895751 When PF-06463922 Given Alone and With Rifampin	Cmax was the maximum observed plasma concentration. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period. PF-06895751 was the metabolite of PF-06463922.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Molecular Weight Adjusted Metabolite to Parent (M/P) Ratio for Cmax (MRCmax) of PF-06463922 and Its Metabolite: When PF-06463922 Given Alone and With Rifampin	Cmax was the maximum observed plasma concentration of PF-06463922 and PF-06895751 ( metabolite of PF-06463922). The molecular weight adjusted metabolite/parent ratio (PF-06895751/PF-06463922) for Cmax was presented. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Molecular Weight Adjusted Metabolite to Parent (M/P) Ratio for AUClast (MRAUClast) of PF-06463922 and Its Metabolite: When PF-06463922 Given Alone and With Rifampin	AUClast was the plasma area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration of PF-06463922 and PF-06895751 ( metabolite of PF-06463922). The molecular weight adjusted metabolite/parent ratio (PF-06895751/PF-06463922) for AUClast was presented. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period. PF-06895751 was the metabolite of PF-06463922.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.
Plasma Molecular Weight Adjusted Metabolite to Parent (M/P) Ratio for AUCinf (MRAUCinf) of PF-06463922 and Its Metabolite: When PF-06463922 Given Alone and With Rifampin	AUCinf was the plasma area under the plasma concentration-time profile from time 0 extrapolated to infinite time of PF-06463922 and PF-06895751 ( metabolite of PF-06463922). The molecular weight adjusted metabolite/parent ratio (PF-06895751/PF-06463922) for AUCinf was presented. The PK parameter analysis population was defined as all participants enrolled and treated who have at least 1 of the PF-06463922 PK parameters of primary interest in at least 1 treatment period.	Predose, 0.5, 1, 1.5, 2, 4, 6, 12, 24, 36, 48, 60, 72, 96, 120 hours postdose on Day 1 after PF-06463922 100 mg administration in Period 1, and at the same time points on Day 8 after PF-06463922 100 mg with rifampin administration in Period 2.

Other Outcome Measures

Outcome Measure	Measure Description	Time Frame
Number of Participants With End of Study Abnormal Laboratory Findings Meeting the Criteria of Potentially Significant Clinical Concern	The total number of participants with laboratory test abnormalities was assessed. Clinical laboratory tests included hematology, chemistry, urinalysis and some other tests (including follicle-simulating hormone[FSH], urine drug screening, hepatitis B surface antigen [HBsAg], hepatitis B core antibody [HBcAb], hepatitis C virus antibody [HCVAb] and human immunodeficiency virus [HIV]. Clinical significance was judged by the investigator.	Baseline to about 18 days after the first PF-06463922 dose
Number of Participants With Physical Examination Findings Meeting the Criteria of Potentially Significant Clinical Concern	A full physical examination included head, ears, eyes, nose, mouth, skin, heart and lung examinations, lymph nodes, gastrointestinal, musculoskeletal, and neurological systems. The limited or abbreviated physical examination focused on general appearance, the respiratory and cardiovascular systems, as well as towards participant reported symptoms. Clinical significance was judged by the investigator.	Baseline to about 18 days after the first PF-06463922 dose.
Number of Participants With Changes From Baseline and Absolute Values in Vital Signs Meeting the Criteria of Potentially Significant Clinical Concerns	Criteria for potentially clinically important changes in vital signs were defined as: supine and standing systolic blood pressure (SBP) of less than (<90) millimeters of mercury (mm Hg) or change in supine and standing SBP more than or equal to (>=) 30 mm Hg; supine and standing diastolic blood pressure (DBP) of < 50 mm Hg or change in supine and standing DBP of >= 20 mm Hg; supine and standing pulse rate of < 40 or >120 beats per minute (bpm). Figure "99999" signifies data not measurable/applicable. Maximum Decrease is abbreviated as Max.Dec., and Maximum Increase is abbreviated as Max.Inc. n is the number of participants contributing to the parameter, not applicable is abbreviated as N/A.	Baseline to about 18 days after the first PF-06463922 dose.
Number of Participants With Electrocardiogram (ECG) Findings Meeting the Criteria of Potentially Significant Clinical Concerns	PR interval was the interval between the start of the P wave and the start of the QRS complex, corresponding to the time between the onset of the atrial depolarization and onset of ventricular depolarization. Criteria for potentially clinically important changes (chg) in ECG were defined as: absolute values of PR interval >=200 to <220 msec, >=220 to <240 msec, >=240 to <260 msec and >=260 msec. Increase from baseline >=40, <60, >=60 and <80, >=80, and relative change from baseline >25%. The beginning of the Q wave to the end of the T wave corresponding to electrical systole (QT) interval corrected using the Fridericia formular (QTCF) of 450 to <480 msec, 480 to <500 msec and >=500 msec, or an increase of 30 to <60 msec of >=60 msec. Maximum is abbreviated as Max.	Baseline to about 18 days after the first PF-06463922 dose.
Number of Participants With Concomitant Treatments Meeting the Criteria of Potentially Significant Clinical Concerns	Participants abstained from all concomitant treatments, except for the treatment of adverse events. Limited use of non-prescription medications that were not believed to affect participant safety or the overall results of the study might be permitted on a case by case basis following approval by the sponsor. All participants were questioned about concomitant treatment at each clinic visit. Treatments taken within 28 days before the first dose of study investigational product were documented as a prior treatment. Treatment taken after the first dose of study investigational product were documented as concomitant treatments. Females taking hormone replacement therapy might be eligible to participate in this study if they were willing to discontinue therapy at least 28 days prior to the first dose of study treatment and remained off hormonal therapy for duration of the study. Clinical significance was judged by the investigator.	Baseline to about 18 days after the first PF-06463922 dose.
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) (All Causalities and Treatment-Related)	An adverse event (AE) was any untoward medical occurrence in a clinical investigation participant administered a product or medical device; the event need not necessarily have a casual relationship with the treatment or usage. A serious adverse event (SAE) was any untoward medical occurrence at any dose that: 1) resulted in death; 2) was life threatening (immediate risk of death); 3) required inpatient hospitalization or prolongation of existing hospitalization; 4) resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); 5) resulted in congenital anomaly/birth defect. TEAE included both non-serious adverse events and serious adverse events.	Baseline to about 18 days after the first PF-06463922 dose.

Collaborators and Investigators

• Sponsor: Pfizer

Publications and helpful links

General Publications

• Chen J, Xu H, Pawlak S, James LP, Peltz G, Lee K, Ginman K, Bergeron M, Pithavala YK. The Effect of Rifampin on the Pharmacokinetics and Safety of Lorlatinib: Results of a Phase One, Open-Label, Crossover Study in Healthy Participants. Adv Ther. 2020 Feb;37(2):745-758. doi: 10.1007/s12325-019-01198-9. Epub 2019 Dec 20. Erratum In: Adv Ther. 2020 Nov;37(11):4754.

Helpful Links

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

Study record dates

Study Major Dates

• Study Start (Actual): July 1, 2016
• Primary Completion (Actual): October 1, 2016
• Study Completion (Actual): October 1, 2016

Study Registration Dates

• First Submitted: June 10, 2016
• First Submitted That Met QC Criteria: June 14, 2016
• First Posted (Estimate): June 17, 2016

Study Record Updates

• Last Update Posted (Actual): January 25, 2019
• Last Update Submitted That Met QC Criteria: August 22, 2018
• Last Verified: August 1, 2018

More Information

Terms related to this study

• Keywords: pharmacokinetics; drug interaction; rifampin; PF-06463922
• Additional Relevant MeSH Terms: Molecular Mechanisms of Pharmacological Action; Anti-Infective Agents; Nucleic Acid Synthesis Inhibitors; Enzyme Inhibitors; Anti-Bacterial Agents; Leprostatic Agents; Cytochrome P-450 Enzyme Inducers; Cytochrome P-450 CYP3A Inducers; Antitubercular Agents; Antibiotics, Antitubercular; Cytochrome P-450 CYP2B6 Inducers; Cytochrome P-450 CYP2C8 Inducers; Cytochrome P-450 CYP2C19 Inducers; Cytochrome P-450 CYP2C9 Inducers; Rifampin
• Other Study ID Numbers: B7461011; RIFAMPIN DDI STUDY (Other Identifier: Alias Study Number)