Study to Evaluate the Effect of Multiple-Dose Ritlecitinib on the Pharmacokinetics (PK) of Tolbutamide

December 5, 2022 updated by: Pfizer

PHASE 1, OPEN-LABEL, FIXED-SEQUENCE, 2-PERIOD STUDY TO ESTIMATE THE EFFECT OF MULTIPLE-DOSE RITLECITINIB (PF-06651600) ON THE PHARMACOKINETICS OF SINGLE-DOSE TOLBUTAMIDE IN HEALTHY PARTICIPANTS

This is a Phase 1, 2-period, multiple-dose, open-label, single fixed sequence study of the effect of ritlecitinib on tolbutamide pharmacokinetics in healthy participants.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

A total of approximately 12 healthy male and/or female participants will be enrolled in the study to obtain at least 10 evaluable participants who complete the study. This is an open-label study not requiring an assessment of efficacy or pharmacodynamics markers, but it will include pharmacokinetic estimation drug-drug interactions.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
12

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

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

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years to 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • Male and/or female participants who are healthy as determined by medical evaluation including medical history, full physical examination (including BP and pulse rate measurements), clinical laboratory tests, and 12-lead ECG.
  • BMI of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lb).

Exclusion Criteria:

  • Past/present clinically significant hematological, renal, endocrine, pulmonary, GI, CV, hepatic, psychiatric, neurological, dermatological or allergic disease (including drug allergies).
  • Any condition possibly affecting drug absorption (eg, gastrectomy, cholecystectomy).
  • Infection with hepatitis B or C viruses.
  • Participants with any of the following acute or chronic infections or infection history: any infection requiring treatment within 2 weeks prior to the start of study participation; any infection requiring hospitalization or parenteral antimicrobial therapy within 60 days of the first dose of investigational product; any infection judged to be an opportunistic infection or clinically significant within the past 6 months of the first dose of investigational product; known active or history of recurrent bacterial, viral, fungal, mycobacterial or other infections; history of recurrent localized dermatomal herpes zoster, or history of disseminated (single episode) herpes simplex or disseminated herpes zoster.
  • History of any lymphoproliferative disorder such as EBV related lymphoproliferative disorder, history of lymphoma, history of leukemia, or signs or symptoms suggestive of current lymphatic or lymphoid disease.
  • Known presence or a history of malignancy other than a successfully treated or excised non-metastatic basal cell or squamous cell cancer of the skin or cervical carcinoma in situ.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Basic Science
  • Allocation: N/A
  • Interventional Model: Sequential Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Ritlecitinib and tolbutamide
In Period 1, participants will be dosed with a single administration of tolbutamide 500 mg tablet on Day 1. Period 1 will be immediately followed by Period 2 with no washout. In Period 2, participants will be dosed with oral 200 mg ritlecitinib QD for 10 days followed by administration of a single dose of 500 mg tolbutamide oral tablet within approximately 5 minutes after administration of a 200 mg dose of ritlecitinib on the morning of Day 10.
Drug: Ritlecitinib
Ritlecitinib 200 mg provided as four 50 mg oral capsules
Other Names:
  • PF-06651600
Drug: Tolbutamide
Tolbutamide 500 mg provided as one 500 mg oral tablet

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Maximum Plasma Concentration (Cmax) of Tolbutamide Administered With and Without Ritlecitinib
Time Frame: Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, and 36 hours post-dose of tolbutamide in Period 1 (Days 1 and 2) and Period 2 (Days 10 and 11)
Cmax was defined as maximum observed plasma concentration. The determination method of Cmax was observing directly from data.
Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, and 36 hours post-dose of tolbutamide in Period 1 (Days 1 and 2) and Period 2 (Days 10 and 11)
Area Under the Plasma Concentration Time Profile From Time Zero Extrapolated to Infinite Time (AUCinf) of Tolbutamide Administered With and Without Ritlecitinib
Time Frame: Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, and 36 hours post-dose in Period 1 (Days 1 and 2) and Period 2 (Days 10 and 11)
AUCinf was defined as area under the plasma concentration time profile from time 0 extrapolated to infinite time.
Pre-dose, 0.5, 1, 2, 3, 4, 5, 6, 8, 12, 16, 24, and 36 hours post-dose in Period 1 (Days 1 and 2) and Period 2 (Days 10 and 11)

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Number of Participants With Treatment-Emergent Adverse Events (TEAEs) - All Causalities and Treatment Related
Time Frame: From screening up to a follow-up phone call between 28 and 35 calendar days after the last administration of the investigational product and early termination (if applicable)
An adverse event (AE) was any untoward medical occurrence in a clinical investigation where participants were administered a product; the event needed not necessarily have a causal relationship with the treatment or usage. TEAEs were events between first dose of study drug and up to discharge from study that were absent before treatment or that worsened relative to pretreatment state. A treatment-related AE was any untoward medical occurrence attributed to the study drug in a participant who received study drug.
From screening up to a follow-up phone call between 28 and 35 calendar days after the last administration of the investigational product and early termination (if applicable)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Pfizer

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Pfizer CT.gov Call Center, Pfizer

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
November 2, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 10, 2022

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
January 10, 2022

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
October 14, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
October 14, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
October 28, 2021

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 6, 2023

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 5, 2022

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2022

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • B7981069
  • 2021-003611-25 (EUDRACT_NUMBER)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

IPD Plan Description

Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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