Trial Outcomes & Findings for Drug-Drug Interaction Study Assessing Effect of Itraconazole on PF-07321332/Ritonavir in Healthy Participants (NCT NCT04962022)

NCT ID: NCT04962022

Last Updated: 2023-07-13

Results Overview

The Cmax of PF-07321332 in the study was observed directly from data.

Recruitment status

COMPLETED

Study phase

PHASE1

Target enrollment

12 participants

Primary outcome timeframe

Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2.

Results posted on

2023-07-13

Participant Flow

This was a 2-period,fixed-sequence crossover study. A total of 12 participants were assigned to and received the treatment in period 1. One participant discontinued due to withdrawal. The remaining 11 participants completed Period 1 and continued to receive the treatment in Period 2 and all completed Period 2.

Participant milestones

Participant milestones
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Period 1
STARTED
12
0
Period 1
COMPLETED
11
0
Period 1
NOT COMPLETED
1
0
Period 2
STARTED
0
11
Period 2
COMPLETED
0
11
Period 2
NOT COMPLETED
0
0

Reasons for withdrawal

Reasons for withdrawal
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Period 1
Withdrawal by Subject
1
0

Baseline Characteristics

Drug-Drug Interaction Study Assessing Effect of Itraconazole on PF-07321332/Ritonavir in Healthy Participants

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Overall Study
n=12 Participants
All participants who received PF-07321332 (suspension)/ritonavir 300/100 mg, Itraconazole 200 mg and PF-07321332(suspension)/ritonavir 300/100 mg in Period 1 and 2, respectively.
Age, Customized
<18 years
0 Participants
n=99 Participants
Age, Customized
18-25 years
0 Participants
n=99 Participants
Age, Customized
26-35 years
5 Participants
n=99 Participants
Age, Customized
36-45 years
3 Participants
n=99 Participants
Age, Customized
>45 years
4 Participants
n=99 Participants
Sex: Female, Male
Female
1 Participants
n=99 Participants
Sex: Female, Male
Male
11 Participants
n=99 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
n=99 Participants
Race (NIH/OMB)
Asian
0 Participants
n=99 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
Race (NIH/OMB)
Black or African American
2 Participants
n=99 Participants
Race (NIH/OMB)
White
10 Participants
n=99 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=99 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants

PRIMARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2.

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 concentration value was reported.

The Cmax of PF-07321332 in the study was observed directly from data.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Maximum Observed Concentration (Cmax) of PF-07321332
4678 ng/mL
Geometric Coefficient of Variation 17
5546 ng/mL
Geometric Coefficient of Variation 15

PRIMARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2.

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 of the PK parameters of interest were reported.

The AUCtau of PF-07321332 was determined by Linear/Log trapezoidal method.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Area Under the Plasma Concentration-time Profile From Time Zero to Time Tau (τ), Where Tau=12-hour Dosing Interval(AUCtau) for PF-07321332
33350 ng*hr/mL
Geometric Coefficient of Variation 20
46290 ng*hr/mL
Geometric Coefficient of Variation 18

SECONDARY outcome

Timeframe: Screening up to Day 35

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

An Adverse event (AE) was any untoward medical occurrence in a participant. 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. The focus of AE summaries was on treatment-emergent AE (TEAE). An AE was considered TEAE if the event occurred during the on-treatment period.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Number of Participants With Treatment Emergent Adverse Events (TEAEs)
Participants with TEAEs
7 Participants
10 Participants
Number of Participants With Treatment Emergent Adverse Events (TEAEs)
Participants with serious TEAEs
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Screening up to Day 9 of Period 2 or Early termination/discontinuation.

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

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

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)
Monocytes/Leukocytes(%)> 1.2 ✖ ULN
1 Participants
2 Participants
Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)
Bicarbonate(mEq/L) > 1.1 ✖ ULN
6 Participants
0 Participants
Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)
Fibrinogen(mg/dl) > 1.25 ✖ Baseline
0 Participants
1 Participants
Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)
Leukocyte Esterase >= 1
0 Participants
1 Participants

SECONDARY outcome

Timeframe: Screening up to Day 9 of Period 2 or Early termination/discontinuation.

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

Triplicate 12-lead ECG readings approximately 2 minutes apart were taken at 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.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
PR interval, Aggregate (msec) Value >= 300
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
PR interval, Aggregate (msec) %Change >= 25/50%
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QRS Duration, Aggregate (msec) Value >= 140
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QRS Duration, Aggregate (msec) %Change >= 50%
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QTcF interval, Aggregate (msec) 450 < Value < = 480
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QTcF interval, Aggregate (msec) 480 < Value < = 500
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QTcF interval, Aggregate (msec) Value > 500
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QTcF interval, Aggregate (msec) 30 < Change < = 60
0 Participants
0 Participants
Number of Participants With Clinically Significant 12-lead Electrocardiogram (ECG) Findings
QTcF interval, Aggregate (msec) Change > 60
0 Participants
0 Participants

SECONDARY outcome

Timeframe: Screening up to Day 9 of Period 2 or Early termination/discontinuation.

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

Vital signs(systolic and diastolic blood pressure, and pulse rate) were measured with participants after having a rest for at least 5 minutes in a supine position. Vital signs assessment were performed after collection of ECGs and prior to collection of blood draws if scheduled at the same time.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 1/Day 3 0 hour (H)
1.4 mmHg
Standard Deviation 9.84
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 1/Day 3 1H 30min
1.5 mmHg
Standard Deviation 9.03
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 2/Day 4 0H
2.6 mmHg
Standard Deviation 11.34
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 2/Day6 0H
3.6 mmHg
Standard Deviation 8.43
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 2/Day6 1H
5.5 mmHg
Standard Deviation 10.11
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 2/Day6 1H 30min
5.3 mmHg
Standard Deviation 13.52
Change From Baseline in Vital Signs Data - Supine Systolic Blood Pressure
Period 2/Day6 72 H
6.4 mmHg
Standard Deviation 10.11

SECONDARY outcome

Timeframe: Screening up to Day 9 of Period 2 or Early termination/discontinuation.

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

Vital signs(systolic and diastolic blood pressure, and pulse rate) were measured with participants after having a rest for at least 5 minutes in a supine position. Vital signs assessment were performed after collection of ECGs and prior to collection of blood draws if scheduled at the same time.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 1/Day 3 0H
-0.9 mmHg
Standard Deviation 4.97
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 1/Day 3 1H 30min
0.5 mmHg
Standard Deviation 4.74
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 2/Day 4 0H
4.1 mmHg
Standard Deviation 4.09
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 2/Day 6 0H
3.5 mmHg
Standard Deviation 4.44
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 2/Day 6 1H
4.9 mmHg
Standard Deviation 4.87
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 2/Day 6 1H 30min
4.2 mmHg
Standard Deviation 5.44
Change From Baseline in Vital Signs Data - Supine Diastolic Blood Pressure
Period 2/Day 6 72H
2.9 mmHg
Standard Deviation 6.28

SECONDARY outcome

Timeframe: Screening up to Day 9 of Period 2 or Early termination/discontinuation.

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

Vital signs(systolic and diastolic blood pressure, and pulse rate) were measured with participants after having a rest for at least 5 minutes in a supine position. Vital signs assessment were performed after collection of ECGs and prior to collection of blood draws if scheduled at the same time.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 1/Day 3 0 H
-0.5 beats per minute(bpm)
Standard Deviation 5.92
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 1/Day 3 1 H 30 min
-3.1 beats per minute(bpm)
Standard Deviation 4.64
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 2/Day 4 0 H
-2.4 beats per minute(bpm)
Standard Deviation 5.50
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 2/Day 6 0 H
-2.5 beats per minute(bpm)
Standard Deviation 8.26
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 2/Day 6 1 H
-0.8 beats per minute(bpm)
Standard Deviation 10.84
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 2/Day 6 1 H 30 min
-2.1 beats per minute(bpm)
Standard Deviation 12.79
Change From Baseline in Vital Signs Data - Supine Pulse Rate
Period 2/Day 6 72 H
0.3 beats per minute(bpm)
Standard Deviation 9.96

SECONDARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 of the PK parameters of interest were reported.

PF-07321332 Tmax was observed directed from data

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Time for Cmax (Tmax) for PF-07321332
1.020 hours(hr)
Interval 0.5 to 2.08
1.700 hours(hr)
Interval 0.5 to 4.0

SECONDARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 of the PK parameters of interest were reported. Here, "Number of Participants analyzed" signifies number of participants evaluable for this outcome measure.

Terminal half-life was defined as the time measured for the plasma concentration of drug to decrease by one half.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=10 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Terminal Half-life(t1/2) of PF-07321332
8.255 hours(hr)
Standard Deviation 1.9465
7.793 hours(hr)
Standard Deviation 0.89019

SECONDARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2.

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 of the PK parameters of interest were reported.

AUClast of PF-07321332 was determined by Linear/Log trapezoidal method.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Area Under the Plasma Concentration-time Profile From Time Zero to the Time of the Last Quantifiable Concentration(AUClast) of PF-07321332
41840 ng*hr/mL
Geometric Coefficient of Variation 21
74430 ng*hr/mL
Geometric Coefficient of Variation 21

SECONDARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2.

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 of the PK parameters of interest were reported.

CL/F was apparent clearance.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Apparent Clearance(CL/F) of PF-07321332
8.990 L/hr
Geometric Coefficient of Variation 20
6.478 L/hr
Geometric Coefficient of Variation 18

SECONDARY outcome

Timeframe: Days 1, 2, 3 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, and 48 hours postdose on Day 3) in Period 1; Days 1, 4, 5, 6 (pre-dose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 16, 24, 48, and 72 hours postdose on Day 6) of Period 2.

Population: The analysis population included all participants who took at least 1 dose of study intervention and in whom at least 1 of the PK parameters of interest were reported. Here, "Number of Participants analyzed" signifies number of participants evaluable for this outcome measure.

Vz/F was apparent volume of distribution.

Outcome measures

Outcome measures
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 Participants
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning of Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=10 Participants
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Apparent Volume of Distribution (Vz/F) of PF-07321332
104.7 L
Geometric Coefficient of Variation 33
72.07 L
Geometric Coefficient of Variation 16

Adverse Events

PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted

Serious events: 0 serious events
Other events: 7 other events
Deaths: 0 deaths

Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted

Serious events: 0 serious events
Other events: 10 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
PF-07321332 (Suspension)/Ritonavir 300/100 mg BID, Fasted
n=12 participants at risk
Participants received PF-07321332/ritonavir 300/100 mg administered orally every 12 hours for a total of 5 doses, from Day 1 morning to Day 3 morning in Period 1.
Itraconazole 200 mg QD + PF-07321332(Suspension)/Ritonavir 300/100 mg BID, Fasted
n=11 participants at risk
Participants received itraconazole 200 mg orally once a day from Days 1 through 8 of Period 2, for a total of 8 doses; and PF-07321332/ritonavir 300/100 mg administered orally every 12 hours from Days 4 through 6 of Period 2, for a total of 5 doses.
Cardiac disorders
Atrioventricular block first degree
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Abdominal discomfort
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Abdominal distension
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Abdominal pain
16.7%
2/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
36.4%
4/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Abdominal pain lower
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Anorectal discomfort
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Breath odour
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
27.3%
3/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Change of bowel habit
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Constipation
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
18.2%
2/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Diarrhoea
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
54.5%
6/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Dry mouth
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Dyspepsia
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Eructation
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Flatulence
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Gastrointestinal motility disorder
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Gastrooesophageal reflux disease
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Nausea
16.7%
2/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
18.2%
2/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Gastrointestinal disorders
Vomiting
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Nervous system disorders
Dizziness
16.7%
2/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Nervous system disorders
Dysgeusia
16.7%
2/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
27.3%
3/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Nervous system disorders
Headache
33.3%
4/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
27.3%
3/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Nervous system disorders
Restless legs syndrome
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Psychiatric disorders
Insomnia
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Renal and urinary disorders
Pollakiuria
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Reproductive system and breast disorders
Testicular pain
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Respiratory, thoracic and mediastinal disorders
Nasal congestion
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Skin and subcutaneous tissue disorders
Ecchymosis
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Asthenia
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
18.2%
2/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Fatigue
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
18.2%
2/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Feeling hot
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Influenza like illness
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Injection site pain
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Vessel puncture site haematoma
8.3%
1/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
0.00%
0/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
General disorders
Vessel puncture site pain
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Musculoskeletal and connective tissue disorders
Back pain
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Musculoskeletal and connective tissue disorders
Muscle spasms
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Musculoskeletal and connective tissue disorders
Musculoskeletal stiffness
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Musculoskeletal and connective tissue disorders
Myalgia
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
Ear and labyrinth disorders
Ear discomfort
0.00%
0/12 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.
9.1%
1/11 • From screening up to Day 35.
Serious adverse events(SAE) and non-serious AEs were recorded on the case report form.

Additional Information

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