HealthyPhase 1NCT02804399

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

A Phase 1 study testing PF-06463922 and rifampin in people with Healthy, run by Pfizer at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Trial summary

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

Who is it for?: Ages 18 to 55 yearsHealthy volunteers can take part
Conditions the study is for: Healthy
What is being tested?: PF-06463922 and rifampin
Type of treatment: Pill or oral medicine
Could I receive a placebo?: No, everyone receives an active treatment
How many people: 12 participants
Where: 1 siteUnited States
Study dates: Jul 2016to Oct 2016
Phase: Phase 1
Are there results?: Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

Ages 18 to 55 years
All sexes
Healthy volunteers accepted
Adult

Who may be able to join

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)

Who cannot join

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

Trial locations and contacts

1 site in 1 country.

United States1 site

Pfizer New Haven Clinical Research Unit
New Haven, Connecticut, 06511

Other trials in United States

About this study

Official title: 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.

Read the 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.

Conditions: Healthy
Being tested: PF-06463922, rifampin
Keywords: rifampin, pharmacokinetics, PF-06463922, drug interaction

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

PF-06463922Drug
Also called lorlatinib
100 mg oral dose on day 1 in period 1 and on day 8 in period 2
rifampinDrug
Also called rifampicin
600 mg QD from day 1 to day 12 in period 2.

Study groups in NCT02804399
Study group	Role	What they receive
all subjects	Experimental	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. Receives: Drug: PF-06463922; Drug: rifampin

What is being measured

The primary outcome is the main question the study is designed to answer.

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.
Measured: 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.
Measured: 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 outcomes (13)

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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.
Measured: 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.

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

Jul 2016Oct 2016

First posted17 Jun 2016 (estimated)
Study startJul 2016
Primary completionOct 2016
Study completionOct 2016

Resources

Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
Publications (1)Papers the sponsor has linked to this study.
Other trials for HealthyStudies of the same condition, open and under way.
More trials run by PfizerThe sponsor's other registered studies.
What the trial phases meanHow a treatment moves from first tests in people to approval.

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design

Study type: Interventional
Phase: Phase 1
Primary purpose: Other
Intervention model: Crossover
Masking: None (open label)
Enrolment: 12 participants (actual)

IDs, dates and publications

ClinicalTrials.gov ID: NCT02804399
Sponsor's protocol ID: B7461011
Other IDs: RIFAMPIN DDI STUDY
Status last verified: Aug 2018
First submitted: 10 Jun 2016
Last updated: 25 Jan 2019
Results posted: Yes, on ClinicalTrials.gov
Data monitoring committee: No

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.
PubMed 31863284

Want to know more?

The sponsor has not listed a contact. The official record may have more details.

Talk to your doctor first and take this page with you. Only the study team can confirm whether you can join.

Questions to ask the study team

What is the study trying to find out?
What would I need to do, and how often would I visit?
Could I receive a placebo instead of the treatment?
What are the possible risks and benefits for me?
Will it cost me anything? Are travel or time paid for?
Can I keep seeing my own doctor during the study?
What happens when the study ends?

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Study at a glance

From the registry record, last updated by the sponsor on 25 Jan 2019. Recruitment status is as the sponsor reported it: confirm with the study team.

Official title: 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.
ClinicalTrials.gov ID: NCT02804399
Acronym / sponsor ID: B7461011
Conditions: Healthy
Keywords: rifampin, pharmacokinetics, PF-06463922, drug interaction
Phase: Phase 1
Study type: Interventional
Recruitment status: Completed
Enrolment: 12 participants (actual)
Lead sponsor: PfizerIndustry (pharma, biotech, devices)
Study start: Jul 2016 (actual)
Primary completion: Oct 2016 (actual)
Study completion: Oct 2016 (actual)
First posted: 17 Jun 2016 (estimated)
Results: Posted 25 Jan 2019

Clinical summary

The research question as the sponsor registered it. This describes what the study plans to test, not what it found.

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

Detailed description

Study design

Primary purpose: Other
Intervention model: Crossover
Masking: None (open label)
Number of arms: 1

Arm	Type	Receives
all subjects	Experimental	Drug: PF-06463922, Drug: rifampinsubjects 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.

Who may qualify

Ages: 18 to 55 years
Sex: All
Healthy volunteers: Accepted
Age groups: Adult

Key inclusion criteria (2 listed)

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)

Key exclusion criteria (7 listed)

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

Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.

Interventions

Intervention	Type	Arms
PF-06463922Also: lorlatinib100 mg oral dose on day 1 in period 1 and on day 8 in period 2	Drug	all subjects
rifampinAlso: rifampicin600 mg QD from day 1 to day 12 in period 2.	Drug	all subjects

Primary outcome

Plasma AUCinf for PF-06463922 Given Alone and With Rifampin
Time frame: 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.
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.
Plasma Cmax for PF-06463922 Given Alone and With Rifampin
Time frame: 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.
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.

13 secondary outcomes

Plasma AUClast for PF-06463922 Given Alone and With Rifampin
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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.
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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
Time frame: 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.

Results and safety

Results posted to the registry on 25 Jan 2019, as reported by the sponsor. Figures are copied from the record, not re-analysed. Full results on ClinicalTrials.gov.

Participant flow

Group	Started	Completed
PF-06463922 100 mg Single Dose (SD)	12	12
Rifampin 600 Once a Day (QD) + PF-06463922 100 mg SD	0	0

Primary outcome: Plasma AUCinf for PF-06463922 Given Alone and With Rifampin

Time frame: 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.. Geometric mean (Geometric Coefficient of Variation). Unit: nanogram (ng)*hr/ millilitre (mL)

Measure	PF-06463922 100 mg n = 12	Rifampin 600 mg + PF-06463922 100 mg n = 11
Value	8766 (19)	1299 (30)

PF-06463922 100 mg vs Rifampin 600 mg + PF-06463922 100 mg: Ratio of Geometric Mean: 14.74 (90% CI 12.78 to 17.01)

Population analysed: All participants who received PF-06463922, rifampin and PF-06463922 in Period 1 and 2, respectively. A washout period of at least 10 days between the 2 single PF-06463922 dose was maintained. Here, "Number of Participants analyzed" signifies number of participants evaluable for this outcome measure.

Primary outcome: Plasma Cmax for PF-06463922 Given Alone and With Rifampin

Measure	PF-06463922 100 mg n = 12	Rifampin 600 mg + PF-06463922 100 mg n = 12
Value	621.4 (26)	148.4 (31)

PF-06463922 100 mg vs Rifampin 600 mg + PF-06463922 100 mg: Ratio of Geometric Mean: 23.88 (90% CI 21.58 to 26.43)

13 secondary outcomes are reported in the full results.

Adverse events

Other adverse events reported at 5% frequency or more

Group	Serious adverse events	Other adverse events	Deaths
PF-06463922 100 mg	0 of 12 (0%)	1 of 12 (8.3%)	Not reported
Rifampin 600 mg QD	0 of 12 (0%)	5 of 12 (41.7%)	Not reported
Rifampin 600 mg + PF-06463922 100 mg	5 of 12 (41.7%)	11 of 12 (91.7%)	Not reported

Limitations and caveats (from the sponsor): As all participants receiving co-administration of PF-06463922 (100 mg SD) with rifampin (600 mg QD) experienced drug-induced liver injury AEs, all 12 participants were discontinued from further rifampin treatment after 9 days but not 12 days.

Loading the posted results from ClinicalTrials.gov…

Research links

Official record on ClinicalTrials.govLast updated by the sponsor 25 Jan 2019.
Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
Derived from this study: PubMed 31863284Chen 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.
To obtain contact information for a study center near you, click here.Link provided by the sponsor.

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Referral and contact

AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.

Pfizer CT.gov Call Center study director

Pfizer

1 site in 1 country: see every site and its status.

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing PF-06463922 and rifampin in people with Healthy, run by Pfizer at 1 site in United States.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 7 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Jan 2019. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 25 Jan 2019). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Plasma AUCinf for PF-06463922 Given Alone and With Rifampin (time frame: 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.). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT02804399, which also lists 1 linked publication.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Jan 2019.