Clinical trial NCT05263895: Relative Bioavailability Study of 4 Different Formulations of PF-07321332 Relative to the Commercial Tablet Formulation
Official title: A PHASE 1, OPEN-LABEL, RANDOMIZED, SINGLE-DOSE, CROSSOVER STUDY TO ESTIMATE THE RELATIVE BIOAVAILABILITY OF PF-07321332 FOLLOWING ORAL ADMINISTRATION OF 4 DIFFERENT FORMULATIONS RELATIVE TO THE COMMERCIAL TABLET FORMULATION IN HEALTHY ADULT PARTICIPANTS UNDER FASTED CONDITIONS
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: PHASE1
Conditions: Bioavailability
Keywords: coronavirus disease 2019 (COVID-19)
severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)
Lead sponsor: Pfizer
Sponsor class: INDUSTRY
First posted: 2022-03-03
Enrollment: 12
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: CROSSOVER
Primary purpose: BASIC_SCIENCE

Brief summary: The purpose of this study is to estimate the relative bioavailability of PF-07321332 in different formulations in healthy adult participants.


Eligibility criteria: Inclusion Criteria:

* Participants who are overtly healthy as determined by medical evaluation including medical history, physical examination (PE), laboratory tests, vital signs and standard 12 lead ECGs.
* Body mass index (BMI) of 17.5 to 30.5 kg/m2; 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, lifestyle considerations, and other study procedures

Exclusion Criteria:

* Positive test result for SARS-CoV-2 infection at the time of Screening or Day -1.
* 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).
* Clinically relevant abnormalities requiring treatment (eg, acute myocardial infarction, unstable ischemic conditions, evidence of ventricular dysfunction, serious tachy or brady arrhythmias) or indicating serious underlying heart disease (eg, prolonged PR interval, cardiomyopathy, heart failure greater than New York Heart Association (NYHA) 1, underlying structural heart disease, Wolff Parkinson-White syndrome).
* Any condition possibly affecting drug absorption (eg, gastrectomy, cholecystectomy).
* History of human immunodeficiency virus (HIV) infection, hepatitis B, or hepatitis C; positive testing for HIV, hepatitis B surface antigen (HBsAg), or hepatitis B surface antibody (HCVAb). Hepatitis B vaccination is allowed.
* Use of prescription or nonprescription drugs and dietary and herbal supplements within 7 days or 5 half lives (whichever is longer) prior to the first dose of study intervention.
* Participant who have received a COVID-19 vaccine within 7 days before screening or admission, or who are to be vaccinated with a COVID-19 vaccine at any time during the study confinement period.
* A positive urine drug test.

Primary outcomes:
measure: Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration (Clast) (AUClast) of Nirmatrelvir
timeFrame: 0, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24, 48 and 72 hours postdose
measure: Area Under the Plasma Concentration-Time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of Nirmatrelvir
timeFrame: 0, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24, 48 and 72 hours postdose
measure: Maximum Plasma Concentration (Cmax) of Nirmatrelvir
timeFrame: 0, 0.5, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 12, 16, 24, 48 and 72 hours postdose
Secondary outcomes:
measure: Number of Participants With Treatment-Emergent Adverse Events (TEAEs)
timeFrame: Baseline up to 35 days after last dose of study intervention (up to 12 weeks)
measure: Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)
timeFrame: Screening (from Day-28 to Day-2), Day-1 of Period 1 (before 1st dose) and Day4 of Period 5 (4 days after the last dose on study discharge day). Each treatment period was 4 days long (Day1 to Day4) with a minimum of 4 days washout between each period
measure: Number of Participants With Vital Signs Abnormalities
timeFrame: Screening (D28-D2), D1 of Period 1 (before 1st dose), D1 hr 0,2,and 6 of each period, and D4 of Period 5 (4 days after the last dose on study discharge day). Each treatment Period was 4 days long (D1-D4) with a minimum 4 days washout between each period
measure: Number of Participants With ECG Abnormalities
timeFrame: Screening (from D-28 to D-2), D1, hr0 of Period 1 (before 1st dose) and D4 of Period 5 (4 days after last dose on study discharge day). Each treatment period was 4 days long (D1 to D4) with a minimum of 4 days washout between each period
measure: Number of Participants With Physical Examination Abnormalities
timeFrame: Screening (from Day-28 to Day-2), Day-1 of Period 1 (before 1st dose. Each treatment period was 4 days long (Day1 to Day4) with a minimum of 4 days washout between each period
Other outcomes:
Locations:
city: New Haven
country: United States
facility: Pfizer Clinical Research Unit - New Haven
state: Connecticut
Study officials:
affiliation: Pfizer
name: Pfizer CT.gov Call Center
role: STUDY_DIRECTOR
References: