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A Study to Understand the Effect of Tablet Formulation and Food on PF-06821497 in Healthy Adult Participants.

A PHASE 1, RANDOMIZED, OPEN-LABEL, 3-PERIOD, CROSSOVER, SINGLE-DOSE, 2-PART STUDY IN HEALTHY PARTICIPANTS TO INVESTIGATE THE EFFECT OF TABLET FORMULATION AND FOOD ON THE RELATIVE BIOAVAILABILITY OF PF-06821497

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05767905
Enrollment
18
Registered
2023-03-14
Start date
2023-03-17
Completion date
2023-06-20
Last updated
2025-06-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Healthy

Keywords

PF-06821497, Relative Bioavailability, Food Effect

Brief summary

The purpose of this study is to understand the effect of tablet formulation and presence of food on the study medicine PF-06821497 in healthy adult participants. The study is seeking for male and female participants who: * Are 18 years of age or more. * Are confirmed to be healthy after performing some medical and physical tests. * Weigh more than 50kgs of body weight and have a body mass index of 17 and a half kg per meter squared or more. The study consists of two parts. In each part of the study, the selected participants will take part in 3 study periods to receive 3 different treatments which are randomly assigned. There will also be a 5-day gap between each study period. This is done so that the medicine is passed out of the body before the start of next study period. Each treatment consists of a single dose of PF-06821497. The treatments differ by tablet formulation and/or whether the medicine is to be given with food or without food conditions. How the medicine is processed in the body will be studied after giving the medicines to the participants. This will be done by collecting blood samples after each administration. The results will be used to see the effect of tablet formulation and presence of food on the amount of PF-06821497 available in the blood of the participants. In each part, participants will be on the study up to 10 weeks, including the screening and follow-up periods.

Interventions

DRUGPF-06821497 Treatment A

A single dose of PF-06821497 administered under fasting conditions.

DRUGPF-06821497 Treatment B

A single dose of PF-06821497 administered under fasting conditions.

DRUGPF-06821497 Treatment C

A single dose of PF-06821497 administered under fasting conditions.

DRUGPF-06821497 Treatment D

A single dose of PF-06821497 administered under fasting conditions.

DRUGPF-06821497 Treatment E

A single dose of PF-06821497 administered after low fat meal

DRUGPF-06821497 Treatment F

A single dose of PF-06821497 administered after high fat meal.

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
BASIC_SCIENCE
Masking
NONE

Masking description

Open-label Study

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes

Inclusion criteria

* Participants ≥18 years of age, inclusive, at screening. * Male and female participants who are overtly healthy as determined by medical evaluation including medical history, physical examination, laboratory tests, vital signs and 12-lead ECGs. * BMI of ≥17.5 kg/m2; and a total body weight \>50 kg (110 lb) * Evidence of a personally signed and dated ICD indicating that the participant has been informed of all pertinent aspects of the study. * Participants who are willing and able to comply with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, 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) or prior allergic reaction to any component of PF-06821497. * 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 drugs and dietary and herbal supplements within 7 days or 5 half-lives (whichever is longer) 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).

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-06821497Days 1 (pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post dose), 2 and 3 in Periods 1 to 3.The AUCinf was determined by AUClast + (Clast/kel), where Clast is the predicted plasma concentration at the last quantifiable time point from the log-linear regression analysis and kel is the terminal phase rate constant calculated by a linear regression of the loglinear concentration-time curve. AUClast is the area under the concentration-time curve from 0 to time of last measurable concentration
Maximum Plasma Concentration (Cmax) for PF-06821497.Days 1 (pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post dose), 2 and 3 in Periods 1 to 3.The Cmax was observed directly from data.

Secondary

MeasureTime frameDescription
Number of Participants With Treatment Emergent Adverse Events (TEAEs).From screening up to Day 35An adverse event (AE) was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. A serious AE was any untoward medical occurrence at any dose that resulted in death; was life-threatening; required hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity; resulted in congenital anomaly/birth, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic, was considered serious.
Number of Participants With Laboratory AbnormalitiesFrom screening up to Day 3 of Period 3, and prior to early termination/discontinuation, up to 10 weeks.Safety laboratory assessments included urinalysis, hematology, chemistry and other. All the safety laboratory samples were collected following at least a 4-hour fast.
Number of Participants With Clinically Significant ECG FindingsFrom screening up to Day 3 of Period 3, and prior to early termination/discontinuation, up to 10 weeks.Single 12-lead electrocardiogram or electrocardiography (ECG) readings were taken at approximately each test. All ECG assessments were made after at least a 5-minute rest in a supine position and prior to any blood draws or vital sign measurements.

Countries

United States

Participant flow

Pre-assignment details

A total of 18 participants (12 participants in Part 1 and 6 participants in Part 2) were randomized and assigned to study treatments.

Participants by arm

ArmCount
Part 1
In Part 1, each enrolled participant participated in 3 study periods to receive 3 different treatments(Treatment A: Single 250 mg dose (1 × 250 mg) of MST tablet formulation (Formulation 1), fasted; Treatment B: Single 250 mg dose (1 × 250 mg) of WG tablet formulation (Formulation 2), fasted; Treatment C: Single 250 mg dose (1 × 250 mg) of WG tablet formulation (larger API particle size) (Formulation 3), fasted.) according to the sequence determined by randomization with 5-day washouts between PF-06821497 administration.
12
Part 2
In Part 2, each enrolled participant participated in 3 study periods to receive 3 different treatments (Treatment D: Single 1250 mg dose (5 × 250 mg) of WG tablet formulation (Formulation 2), fasted; Treatment E: Single 1250 mg dose (5 × 250 mg) of WG tablet formulation (Formulation 2), fed, low-fat; Treatment F: Single 1250 mg dose (5 × 250 mg) of WG tablet formulation (Formulation 2), fed, high-fat.) according to the sequence determined by randomization with 5-day washouts between PF-06821497 administration.
6
Total18

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Overall StudyAdverse Event001

Baseline characteristics

CharacteristicPart 1Part 2Total
Age, Customized
18 -44 years
7 Participants2 Participants9 Participants
Age, Customized
45 - 64 years
4 Participants3 Participants7 Participants
Age, Customized
>= 65 years
1 Participants1 Participants2 Participants
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants1 Participants1 Participants
Race/Ethnicity, Customized
Black or African American
3 Participants1 Participants4 Participants
Race/Ethnicity, Customized
Black or African American, White
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
Black or African American, White, American Indian or Alaska Native
1 Participants0 Participants1 Participants
Race/Ethnicity, Customized
White
7 Participants4 Participants11 Participants
Sex: Female, Male
Female
6 Participants5 Participants11 Participants
Sex: Female, Male
Male
6 Participants1 Participants7 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
0 / 120 / 120 / 120 / 60 / 60 / 5
other
Total, other adverse events
5 / 124 / 122 / 123 / 63 / 62 / 5
serious
Total, serious adverse events
0 / 120 / 120 / 120 / 60 / 61 / 5

Outcome results

Primary

Area Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-06821497

The AUCinf was determined by AUClast + (Clast/kel), where Clast is the predicted plasma concentration at the last quantifiable time point from the log-linear regression analysis and kel is the terminal phase rate constant calculated by a linear regression of the loglinear concentration-time curve. AUClast is the area under the concentration-time curve from 0 to time of last measurable concentration

Time frame: Days 1 (pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post dose), 2 and 3 in Periods 1 to 3.

Population: The pharmacokinetic (PK) parameter analysis population was defined as all participants randomized and treated who had at least 1 of the PF-06821497 PK parameters of primary interest in at least 1 treatment period.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Part 1 PF-06821497 Form 1 250 mg FastedArea Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-068214973302 ng*hr/mLGeometric Coefficient of Variation 33
Part 1 PF-06821497 Form 2 250 mg FastedArea Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-068214973375 ng*hr/mLGeometric Coefficient of Variation 29
Part 1 PF-06821497 Form 3 250 mg FastedArea Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-068214973479 ng*hr/mLGeometric Coefficient of Variation 39
Part 2 PF-06821497 Form 2 1250 mg FastedArea Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-0682149711220 ng*hr/mLGeometric Coefficient of Variation 48
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatArea Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-0682149722810 ng*hr/mLGeometric Coefficient of Variation 24
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatArea Under the Plasma Concentration-time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of PF-0682149725690 ng*hr/mLGeometric Coefficient of Variation 35
Comparison: Part 1 PF-06821497 Form 1 250 mg Fasted was the Reference treatment and Part 1 PF-06821497 Form 3 250 mg Fasted was the Test treatment.90% CI: [100.55, 117.05]Mixed Models Analysis
Comparison: Part 1 PF-06821497 Form 3 250 mg Fasted was the Test treatment and Part 1 PF-06821497 Form 2 250 mg Fasted was the Reference treatment.90% CI: [98.39, 114.54]Mixed Models Analysis
Comparison: Part 2 PF-06821497 Form 2 1250 mg Fed High-fat was the Test treatment and Part 2 PF-06821497 Form 2 1250 mg Fasted was the Reference treatment.90% CI: [178.67, 293.48]Mixed Models Analysis
Comparison: Part 2 PF-06821497 Form 2 1250 mg Fed Low-fat was the Test treatment and Part 2 PF-06821497 Form 2 1250 mg Fasted was the Reference treatment.90% CI: [164.41, 261.09]
Comparison: Part 1 PF-06821497 Form 1 250 mg Fasted was the Reference treatment, and Part 1 PF-06821497 Form 2 250 mg Fasted was the Test treatment90% CI: [95.55, 109.3]Mixed Models Analysis
Primary

Maximum Plasma Concentration (Cmax) for PF-06821497.

The Cmax was observed directly from data.

Time frame: Days 1 (pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 24 hours post dose), 2 and 3 in Periods 1 to 3.

Population: The PK concentration population was defined as all participants randomized and treated who had at least 1 PF-06821497 concentration in at least 1 treatment period.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Part 1 PF-06821497 Form 1 250 mg FastedMaximum Plasma Concentration (Cmax) for PF-06821497.862.6 ng/mLGeometric Coefficient of Variation 50
Part 1 PF-06821497 Form 2 250 mg FastedMaximum Plasma Concentration (Cmax) for PF-06821497.1023 ng/mLGeometric Coefficient of Variation 35
Part 1 PF-06821497 Form 3 250 mg FastedMaximum Plasma Concentration (Cmax) for PF-06821497.1255 ng/mLGeometric Coefficient of Variation 37
Part 2 PF-06821497 Form 2 1250 mg FastedMaximum Plasma Concentration (Cmax) for PF-06821497.2699 ng/mLGeometric Coefficient of Variation 31
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatMaximum Plasma Concentration (Cmax) for PF-06821497.7685 ng/mLGeometric Coefficient of Variation 28
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatMaximum Plasma Concentration (Cmax) for PF-06821497.8905 ng/mLGeometric Coefficient of Variation 7
Comparison: Part 1 PF-06821497 Form 3 250 mg Fasted was the Test treatment and Part 1 PF-06821497 Form 1 250 mg Fasted was the Reference treatment.90% CI: [121.29, 174.53]Mixed Models Analysis
Comparison: Part 1 PF-06821497 Form 3 250 mg Fasted was the Test treatment and Part 1 PF-06821497 Form 2 250 mg Fasted was the Reference treatment.90% CI: [102.24, 147.12]Mixed Models Analysis
Comparison: Part 2 PF-06821497 Form 2 1250 mg Fed Low-fat was the Test treatment and Part 2 PF-06821497 Form 2 1250 mg Fasted was the Reference treatment.90% CI: [226.39, 358.06]Mixed Models Analysis
Comparison: Part 2 PF-06821497 Form 2 1250 mg Fed High-fat was the Test treatment and Part 2 PF-06821497 Form 2 1250 mg Fasted was the Reference treatment.90% CI: [256.9, 418.44]Mixed Models Analysis
Comparison: Part 1 PF-06821497 Form 1 250 mg Fasted was the Reference treatment, and Part 1 PF-06821497 Form 2 250 mg Fasted was the Test treatment.90% CI: [96.36, 146.06]Mixed Models Analysis
Secondary

Number of Participants With Clinically Significant ECG Findings

Single 12-lead electrocardiogram or electrocardiography (ECG) readings were taken at approximately each test. All ECG assessments were made after at least a 5-minute rest in a supine position and prior to any blood draws or vital sign measurements.

Time frame: From screening up to Day 3 of Period 3, and prior to early termination/discontinuation, up to 10 weeks.

Population: The analysis population included all participants randomly assigned to study intervention and who took at least 1 dose of study intervention.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), change >= 600 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), change >= 600 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 30 <= change < 600 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), %Change >= 25/50%0 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), value >= 1400 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), %Change >= 50%0 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), value > = 3000 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 30 <= change < 600 Participants
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQT Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 30 <= change < 600 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), value >= 1400 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), change >= 600 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 450 <= value < 4801 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQT Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 30 <= change < 600 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), change >= 600 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), %Change >= 25/50%0 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), %Change >= 50%0 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), value > = 3000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), %Change >= 25/50%0 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), value > = 3000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), value >= 1400 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), %Change >= 50%0 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQT Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 30 <= change < 601 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), change >= 600 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), value >= 5000 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 30 <= change < 600 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 30 <= change < 600 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQT Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), %Change >= 50%0 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), value >= 1400 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), value > = 3000 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 30 <= change < 600 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), %Change >= 25/50%0 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), %Change >= 25/50%0 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), value >= 1400 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), %Change >= 50%0 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), value > = 3000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQT Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 30 <= change < 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 30 <= change < 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), %Change >= 50%0 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 30 <= change < 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQRS Duration, aggregate (msec), value >= 1400 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 30 <= change < 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), %Change >= 25/50%0 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), 480 <= value < 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), change >= 600 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcF Interval, aggregate (msec), value >= 5000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsPR Interval, aggregate (msec), value > = 3000 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQTcB Interval, aggregate (msec), 450 <= value < 4800 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Clinically Significant ECG FindingsQT Interval, aggregate (msec), value >= 5000 Participants
Secondary

Number of Participants With Laboratory Abnormalities

Safety laboratory assessments included urinalysis, hematology, chemistry and other. All the safety laboratory samples were collected following at least a 4-hour fast.

Time frame: From screening up to Day 3 of Period 3, and prior to early termination/discontinuation, up to 10 weeks.

Population: The analysis population included all participants randomly assigned to study intervention and who took at least one dose of study intervention.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Laboratory Abnormalities0 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Laboratory Abnormalities0 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Laboratory Abnormalities0 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Laboratory Abnormalities0 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Laboratory Abnormalities1 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Laboratory Abnormalities1 Participants
Secondary

Number of Participants With Treatment Emergent Adverse Events (TEAEs).

An adverse event (AE) was any untoward medical occurrence in a participant or clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. A serious AE was any untoward medical occurrence at any dose that resulted in death; was life-threatening; required hospitalization or prolongation of existing hospitalization; resulted in persistent or significant disability/incapacity; resulted in congenital anomaly/birth, was a suspected transmission via a Pfizer product of an infectious agent, pathogenic or non-pathogenic, was considered serious.

Time frame: From screening up to Day 35

Population: The safety analysis set included all participants randomly assigned to study intervention and who took at least 1 dose of study intervention. Participants was analyzed according to the product they actually received.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Part 1 PF-06821497 Form 1 250 mg FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs).5 Participants
Part 1 PF-06821497 Form 2 250 mg FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs).4 Participants
Part 1 PF-06821497 Form 3 250 mg FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs).2 Participants
Part 2 PF-06821497 Form 2 1250 mg FastedNumber of Participants With Treatment Emergent Adverse Events (TEAEs).3 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed Low-fatNumber of Participants With Treatment Emergent Adverse Events (TEAEs).3 Participants
Part 2 PF-06821497 Form 2 1250 mg Fed High-fatNumber of Participants With Treatment Emergent Adverse Events (TEAEs).2 Participants

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026