Clinical trial NCT05673889: A Study to Understand the Effect of a Study Medicine Called ARV-471 on Dabigatran Etexilate in Healthy Adults
Official title: AN INTERVENTIONAL, PHASE 1, OPEN-LABEL, FIXED-SEQUENCE, 2-PERIOD STUDY TO EVALUATE THE EFFECT OF A SINGLE ORAL DOSE OF ARV-471 (PF-07850327) ON THE PHARMACOKINETICS OF DABIGATRAN IN HEALTHY PARTICIPANTS
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: Healthy
Lead sponsor: Pfizer
Sponsor class: INDUSTRY
Collaborators: name: Arvinas Estrogen Receptor, Inc.
First posted: 2023-01-06
Enrollment: 24
Sex: ALL
Minimum age (years): 18
Maximum age (years): 70
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: CROSSOVER
Primary purpose: OTHER

Brief summary: The purpose of this study is to understand if ARV-471 affects how a medicine called, dabigatran etexilate, gets absorbed or processed into the body in healthy adults.

All participants in this study will receive one dose of dabigatran etexilate alone by mouth in Period 1. In Period 2, everyone will receive one dose of dabigatran etexilate by mouth approximately 90 minutes after receiving one dose of ARV-471 by mouth. The levels of dabigatran in Period 1 will be compared to the levels of dabigatran in Period 2. This will help us to determine if and how ARV-471 affects dabigatran gets absorbed into the body differently in healthy adults.

All participants will stay at the study clinic for approximately 8 days and 7 nights.


Eligibility criteria: Inclusion Criteria:

* Healthy male and/or female participants of non-childbearing potential who are overtly healthy as determined by medical evaluation and are between the ages of 18 and 70 years, inclusive at the time of signing the informed consent document (ICD).
* Body mass index (BMI) of 17.5 to 30.5 kg/m\^2; and a total body weight \>50 kg (110 lb).
* Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests, and other study procedures.

Exclusion Criteria:

* 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).
* Pregnant female participants, breastfeeding female participants, female participants of childbearing potential. Male participants with partners currently pregnant; male participants of childbearing potential who are unwilling or unable to use a highly effective method of contraception as outlined in this protocol for the duration of the study and for 90 days after the last dose of investigational product.
* Active bleeding or risk of bleeding including prior personal or familiar history of abnormal bleeding, hereditary or acquired coagulation or platelet disorder or abnormal coagulation test (PT/INR or PTT/aPTT greater than upper limit of normal) result at screening. Any significant risk factor for major bleeding and this may include but not limited to current or recent GI ulceration, presence of malignant neoplasms at high risk of bleeding, recent brain or spinal injury, recent brain, spinal or ophthalmic surgery, recent intracranial hemorrhage, known or suspected esophageal varices, arteriovenous malformations, vascular aneurysms or major intraspinal or intracerebral vascular abnormalities.
* Other medical or psychiatric condition including recent (within the past year) or active suicidal ideation/behavior or laboratory abnormality, or other conditions or situations related to COVID-19 pandemic 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 nonprescription medications, including vitamins, dietary and herbal supplements, grapefruit/grapefruit containing products, and Seville orange/Seville orange containing products within 7 days or 5 half-lives (whichever is longer) prior to the first dose of study intervention or a longer washout is required for those that fall into the categories below:

  * Moderate or strong cytochrome P450 (CYP) 3A / P-glycoprotein (P-gp) inducers which are prohibited within 14 days plus 5 half-lives prior to the first dose of study intervention.
  * Moderate or strong CYP3A/P-gp inhibitors which are prohibited within 14 days or 5 half-lives (whichever is longer) prior to the first dose of study intervention.
* Standard 12-lead electrocardiogram (ECG) that demonstrates clinically relevant abnormalities that may affect participant safety or interpretation of study results.
* History of sensitivity to heparin or heparin-induced thrombocytopenia.

Primary outcomes:
measure: Maximum Observed Plasma Concentration (Cmax) of Total Dabigatran When Dabigatran Etexilate is Administered Alone Versus When Dabigatran Etexilate is Administered With ARV-471
timeFrame: Period 1 and 2: Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 36 and 48 hours post-dose on Day 1
measure: Area Under the Plasma Concentration-time Curve From Time Zero to Extrapolated Infinite Time (AUCinf) of Total Dabigatran When Dabigatran Etexilate is Administered Alone vs Dabigatran Etexilate is Administered With ARV-471
timeFrame: Period 1 and 2: Pre-dose, 0.5, 1, 2, 3, 4, 6, 8, 12, 24, 36 and 48 hours post-dose on Day 1
Secondary outcomes:
measure: Number of Participants With All-Causality and Treatment-Related Treatment-emergent Adverse Events (TEAEs)
timeFrame: From the first dose (Day 1) up to 35 days after the last dose (Day 5) of study intervention (up to 40 days)
measure: Number of Participants With Laboratory Test Abnormalities (Without Regard to Baseline Abnormality)
timeFrame: Baseline (Period 1 Day -1) up to Period 2 Day 3 (8 days)
measure: Number of Participants With Clinically Significant Vital Signs
timeFrame: Baseline (Period 1 Day 1) up to Period 2 Day 3 (7 days)
measure: Number of Participants With Electrocardiogram (ECG) Abnormalities
timeFrame: Baseline (Period 1 Day 1) up to Period 2 Day 3 (7 days)
Other outcomes:
Locations:
city: Brussels
country: Belgium
facility: Pfizer Clinical Research Unit - Brussels
state: Bruxelles-capitale, Région DE
Study officials:
affiliation: Pfizer
name: Pfizer CT.gov Call Center
role: STUDY_DIRECTOR
References: