A Study to Understand the Effects of Carbamazepine on How Vepdegestrant is Processed in Healthy Participants

NCT06005688 | Completed Phase 1

• 2 other identifiers: C48910112023-505881-27
• Study Type: interventional
• Target: 12
• Locations: 1 country
• Sites: 1

Brief Summary

The purpose of this study is to understand if carbamazepine reacts with vepdegestrant and affects how it is processed in the bodies of healthy participants. This study is seeking participants who:

• are male, or female who cannot have children.
• are 18 years or older.
• are extremely healthy as decided by medical tests.
• have a body mass index (BMI) of 16 to 32 kilogram per meter squared.
• have a total body weight of more than 45 kilograms (99 pounds).
• can understand the study needs and provide a signed document to take part in the study. All participants in this study will receive one dose of vepdegestrant alone by mouth in Period 1. In Period 2, all participants will receive carbamazepine by mouth once a day for 19 days. Participants will also receive one dose of vepdegestrant by mouth. The levels of vepdegestrant in Period 1 will be compared to the levels of vepdegestrant in Period 2 to decide if carbamazepine affects how vepdegestrant is processed differently in healthy adults. The study duration is 27 days and includes two periods. Participants will stay in the clinical research unit through the end of period 2. The participants may be allowed to leave on Day 4 or at the end of Period 1 but must return at the study doctor's call to complete the study. A follow-up visit for each participant takes place at 28 to 35 days after taking the study medicine for the last time.

Conditions

Healthy Participants

Outcome Measures

Primary Outcomes (4)

• Maximum Observed Plasma Concentration (Cmax) of Vepdegestrant when administered alone

  Period 1 - Day 1 pre-dose, 1, 2, 4, 6, 8, 12, 24, 48, 72, 96, 120, and 144 hour post-dose

• Cmax of Vepdegestrant when administered with carbamazepine

  Period 2 - Day 14 pre-dose, 1, 2, 4, 6, 8, 12, 24, 48, 72, 96, 120, and 144 hour post-dose

• Area Under the Curve From Time Zero to Extrapolated Infinite Time (AUCinf) of Vepdegestrant when administered alone

  Period 1 - Day 1 pre-dose, 1, 2, 4, 6, 8, 12, 24, 48, 72, 96, 120, and 144 hour post-dose

• AUCinf of Vepdegestrant when administered with carbamazepine

  Period 2 - Day 14 pre-dose, 1, 2, 4, 6, 8, 12, 24, 48, 72, 96, 120, and 144 hour post-dose

Secondary Outcomes (5)

• Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

  Time the participant provides informed consent through and including follow-up contact occurring 28 to 35 calendar days after the last administration of the study intervention.

• Number of Participants With Clinical Laboratory Abnormalities

  Baseline up to Period 2 Day 20

• Number of Participants With Electrocardiogram (ECG) Abnormalities

  Baseline up to Period 2 Day 20

• Number of Participants With Clinically Significant Change From Baseline in Vital Signs

  Baseline up to Period 2 Day 20

• Number of Participants With Abnormalities in Physical Examinations

  Baseline up to Period 2 Day 20

Study Arms (1)

Vepdegestrant with and without Carbamazepine

EXPERIMENTAL

Vepdegestrant administered as a single dose in Period 1 and Period 2. Carbamazepine administered once a day for 19 days in Period 2.

Drug: Vepdegestrant; Drug: Carbamazepine

Interventions

Vepdegestrant DRUG

Participants will receive a single dose of Vepdegestrant by mouth in Period 1 and Period 2, with a washout period of at least 20 days between two doses of Vepdegestrant.

Also known as: ARV-471, PF-07850327

Vepdegestrant with and without Carbamazepine

Carbamazepine DRUG

Participants will receive Carbamazepine by mouth once a day for 19 days in Period 2.

Also known as: Tegretol

Vepdegestrant with and without Carbamazepine

Eligibility Criteria

• Age: 18 Years+
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64), Older Adult (65+)

You may qualify if:

• Male participants, and female participants of non-childbearing potential aged 18 years or older (or the minimum age of consent in accordance with local regulations) at screening who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, and cardiac monitoring.
• BMI of 16-32 kg/m2; and a total body weight \>45 kg (99.2 lb).
• Capable of giving signed informed consent, which includes compliance with requirements and restrictions listed in the ICD and in this protocol.
• Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations and other study procedures.

You may not qualify if:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurological, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing).
• Any condition possibly affecting drug absorption (eg, gastrectomy, cholecystectomy).
• History of HIV infection, hepatitis B, or hepatitis C; positive testing for HIV, HBsAg, HBcAb, or HCVAb. Hepatitis B vaccination is allowed.
• Participants shown to carry or be positive for HLA-B\*1502 and/or HLA-A\*3101 (genotyping alleles/markers related with carbamazepine-associated SJS or TEN).
• Any medical or psychiatric condition including recent (within the past year) or active suicidal ideation/behavior or laboratory abnormality that may increase the risk of study participation or, in the investigator's judgment, make the participant inappropriate for the study.
• Use of prescription or non-prescription medications, including vitamins, herbal and dietary supplements, grapefruit/grapefruit containing products, and Seville orange/Seville orange containing products within 7 days prior to the first dose of study intervention with the exception of:
• Moderate/strong CYP3A4 inducers which are prohibited within 14 days plus 5 half-lives prior to the first dose of study intervention.
• Moderate/strong CYP3A4 inhibitors which are prohibited within 14 days plus 5 half-lives prior to the first dose of study intervention.
• Previous administration with an investigational product (drug or vaccine) within 30 days (or as determined by the local requirement) or 5 half-lives preceding the first dose of study intervention used in this study (whichever is longer).
• A positive urine drug test. A single repeat for positive drug screen may be allowed.
• Screening supine BP ≥140 mm Hg (systolic) or ≥90 mm Hg (diastolic) for participants \<60 years; and ≥150/90 mm Hg for participants ≥60 years old, following at least 5 minutes of supine rest. If systolic BP is ≥140 or 150 mm Hg (based on age) or diastolic ≥90 mm Hg, the BP should be repeated 2 more times and the average of the 3 BP values should be used to determine the participant's eligibility.
• Baseline standard 12-lead ECG that demonstrates clinically relevant abnormalities that may affect participant safety or interpretation of study results.
• Participants with ANY of the following abnormalities in clinical laboratory tests at screening, as assessed by the study specific laboratory and confirmed by a single repeat test, if deemed necessary:
• AST, ALT, or Total Bilirubin Level \>1.05× ULN;
• Renal impairment as defined by an eGFR \<60 mL/min/1.73m². Based upon participant age at screening, eGFR is calculated usding the recommended CKD-EPI equations to determine eligibility and to provide a baseline to quantify any subsequent kidney safety events.

Sponsors & Collaborators

• Pfizer: lead
• Arvinas Estrogen Receptor, Inc.: collaborator

Study Sites (1)

Pfizer Clinical Research Unit - Brussels

Brussels, Bruxelles-capitale, Région de, B-1070, Belgium

Location

Related Links

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

MeSH Terms

Interventions

Carbamazepine

Intervention Hierarchy (Ancestors)

Dibenzazepines; Heterocyclic Compounds, 3-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds

Study Officials

• Pfizer CT.gov Call Center

  Pfizer

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: NA
• Masking: NONE
• Purpose: OTHER
• Intervention Model: SEQUENTIAL
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Study Record Dates

• First Submitted: August 15, 2023
• First Posted: August 22, 2023
• Study Start: August 18, 2023
• Primary Completion: October 11, 2023
• Study Completion: November 21, 2023
• Last Updated: January 16, 2024

Record last verified: 2024-01

Data Sharing

• IPD Sharing: Will not share

Locations

BE (1)