HealthyPhase 1NCT01953731
A Study To Investigate The Drug-Drug Interaction Potential Of Rifampin OnThe Investigational Agent Palbociclib (PD-0332991)
A Phase 1 study testing Palbociclib and Rifampin in people with Healthy, run by Pfizer at 1 site in United States.
Trial summary
This study will compare the plasma pharmacokinetics of a single 125mg oral dose of palbociclib in the presence and absence of rifampin-mediated enzyme induction in a fixed-sequence two-period study. 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?
- Palbociclib and Rifampin
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 15 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2013to Jan 2014
- Phase
- Phase 1
- Are there results?
- None posted in the registry
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 males or females of non-childbearing potential
- body mass index between 17.5-30.5 kg/m2 with a total body weight greater than 50kg
Who cannot join
- Evidence or history of any clinically significant physiologic, psychological, or medical conditions
- a positive drug screen or alcohol breath test
- a baseline ECG demonstrating a QTc>450msecs or a QRS interval >120msecs
Trial locations and contacts
1 site in 1 country.
United States1 site
Pfizer Investigational Site
New Haven, Connecticut, 06511
About this study
Official title: A Phase 1, Open-Label Fixed-Sequence 2-Period Study To Investigate The Effect Of Multiple Doses Of Rifampin On Palbociclib (PD-0332991) Pharmacokinetics In Healthy Volunteers
This study will compare the plasma pharmacokinetics of a single 125mg oral dose of palbociclib in the presence and absence of rifampin-mediated enzyme induction in a fixed-sequence two-period study.
- Conditions
- Healthy
- Being tested
- Palbociclib, Rifampin
- Keywords
- palbociclib, PD-0332991, rifampin, drug-drug interaction study
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PalbociclibDrug
Also called palbociclib, PD-0332991
In period 1, patients will receive a single 125mg oral dose of palbociclib alone. Subjects will undergo palbociclib pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose.
In period 2, subjects will receive 12 daily oral doses of 600mg of rifampin and a single 125mg oral dose of palbociclib on day 8. Subjects will undergo palbociclib pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose.
RifampinDrug
Also called palbociclib, PD-0332991, rifampin, rifampicin
In period 2, subjects will receive 12 daily oral doses of 600mg of rifampin and a single 125mg oral dose of palbociclib on day 8. Subjects will undergo palbociclib pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose.
| Study group | Role | What they receive |
|---|---|---|
| Single-Arm Fixed-Sequence | Experimental | Subjects will receive two different interventions in fixed-sequence two-period study. In the first period the subjects will receive a single-dose of palbociclib. In the second period, subjects will receive 12 days of rifampin and a single dose of palbociclib on day 8. In both periods, subjects will undergo pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose. Receives: Drug: Palbociclib; Drug: Rifampin |
What is being measured
The primary outcome is the main question the study is designed to answer.
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).
Measured: 0-120 hours post-dose
Maximum Observed Plasma Concentration (Cmax)
Measured: 0-120 hours post-dose
Secondary outcomes (5)
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)
Measured: 0-120 hours post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax)
Measured: 0-120 hours post-dose
Plasma Decay Half-Life (t1/2)
Plasma decay half-life is the time measured for the plasma concentration to decrease by one half.
Measured: 0-120 hours post-dose
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.
Measured: 0-120 hours post-dose
Apparent Volume of Distribution (Vz/F)
Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired plasma concentration of a drug. Apparent volume of distribution after oral dose (Vz/F) is influenced by the fraction absorbed.
Measured: 0-120 hours post-dose
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted1 Oct 2013 (estimated)
- Study startOct 2013
- Primary completionJan 2014
- Study completionJan 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- 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
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 15 participants (actual)
Sponsor and investigators
- Lead sponsor
- Pfizer
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Pfizer CT.gov Call Center, Study director, Pfizer
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01953731
- Sponsor's protocol ID
- A5481017
- Status last verified
- Jan 2014
- First submitted
- 26 Sep 2013
- Last updated
- 20 Jan 2014
- Results posted
- No
- Data monitoring committee
- No
Study at a glance
From the registry record, last updated by the sponsor on 20 Jan 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 1, Open-Label Fixed-Sequence 2-Period Study To Investigate The Effect Of Multiple Doses Of Rifampin On Palbociclib (PD-0332991) Pharmacokinetics In Healthy Volunteers
- ClinicalTrials.gov ID
- NCT01953731
- Acronym / sponsor ID
- A5481017
- Conditions
- Healthy
- Keywords
- palbociclib, PD-0332991, rifampin, drug-drug interaction study
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 15 participants (actual)
- Lead sponsor
- PfizerIndustry (pharma, biotech, devices)
- Study start
- Oct 2013
- Primary completion
- Jan 2014 (actual)
- Study completion
- Jan 2014 (actual)
- First posted
- 1 Oct 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will compare the plasma pharmacokinetics of a single 125mg oral dose of palbociclib in the presence and absence of rifampin-mediated enzyme induction in a fixed-sequence two-period study.
Study design
- Primary purpose
- Basic science
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| Single-Arm Fixed-Sequence | Experimental | Drug: Palbociclib, Drug: RifampinSubjects will receive two different interventions in fixed-sequence two-period study. In the first period the subjects will receive a single-dose of palbociclib. In the second period, subjects will receive 12 days of rifampin and a single dose of palbociclib on day 8. In both periods, subjects will undergo pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose. |
Who may qualify
- Ages
- 18 to 55 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
Key inclusion criteria (2 listed)
- Healthy males or females of non-childbearing potential
- body mass index between 17.5-30.5 kg/m2 with a total body weight greater than 50kg
Key exclusion criteria (3 listed)
- Evidence or history of any clinically significant physiologic, psychological, or medical conditions
- a positive drug screen or alcohol breath test
- a baseline ECG demonstrating a QTc>450msecs or a QRS interval >120msecs
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 |
|---|---|---|
| PalbociclibAlso: palbociclib, PD-0332991In period 1, patients will receive a single 125mg oral dose of palbociclib alone. Subjects will undergo palbociclib pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose. In period 2, subjects will receive 12 daily oral doses of 600mg of rifampin and a single 125mg oral dose of palbociclib on day 8. Subjects will undergo palbociclib pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose. | Drug | Single-Arm Fixed-Sequence |
| RifampinAlso: palbociclib, PD-0332991, rifampin, rifampicinIn period 2, subjects will receive 12 daily oral doses of 600mg of rifampin and a single 125mg oral dose of palbociclib on day 8. Subjects will undergo palbociclib pharmacokinetic sampling at prespecified time points up to 120 hours post palbociclib dose. | Drug | Single-Arm Fixed-Sequence |
Primary outcome
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - 8)]
Time frame: 0-120 hours post-dose
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).
Maximum Observed Plasma Concentration (Cmax)
Time frame: 0-120 hours post-dose
5 secondary outcomes
Area Under the Curve From Time Zero to Last Quantifiable Concentration (AUClast)
Time frame: 0-120 hours post-dose
Time to Reach Maximum Observed Plasma Concentration (Tmax)
Time frame: 0-120 hours post-dose
Plasma Decay Half-Life (t1/2)
Time frame: 0-120 hours post-dose
Apparent Oral Clearance (CL/F)
Time frame: 0-120 hours post-dose
Apparent Volume of Distribution (Vz/F)
Time frame: 0-120 hours post-dose
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 20 Jan 2014.
- 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 Palbociclib 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 3 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 20 Jan 2014. 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?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
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?
Area Under the Curve From Time Zero to Extrapolated Infinite Time [AUC (0 - 8)] (time frame: 0-120 hours post-dose). 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?
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 20 Jan 2014.