A Study to Evaluate the Effect of the Experimental GLP-1 Drug PF-07081532 on Blood Levels of Common Birth Control Pills, and Drugs Omeprazole and Midazolam, and Effect of GLP-1 Drug Semaglutide on Midazolam Blood Levels in Healthy Adults With Weight in the Obesity Range

A PHASE 1, OPEN-LABEL, FIXED-SEQUENCE STUDY TO EVALUATE THE EFFECT OF TWO STEADY-STATE DOSE LEVELS OF PF-07081532 ON THE PHARMACOKINETICS OF SINGLE-DOSE MIDAZOLAM, OMEPRAZOLE AND AN ORAL CONTRACEPTIVE, AND THE EFFECT OF STEADY-STATE SEMAGLUTIDE ON THE PHARMACOKINETICS OF SINGLE-DOSE MIDAZOLAM, IN OBESE ADULT FEMALE PARTICIPANTS

Two different groups of healthy volunteers will be chronically treated with GLP-1 drugs PF-07081532 or alternatively Semaglutide. The effect of these GLP-1 drugs on a single dose of the common sedative medication midazolam blood levels will be measured. The effect of chronic PF-07081532 on single doses of the common stomach acid medication omeprazole, and common birth control medication blood levels will also be measured. The hypothesis is that chronic administration of the GLP-1 drugs will minimally affect blood levels from these common medications.

Study Overview

• Status: Terminated
• Conditions: Obesity
• Intervention / Treatment: Drug: PF-07081532; Drug: Semaglutide

• Study Type: Interventional
• Enrollment (Actual): 32
• Phase: Phase 1

Contacts and Locations

Study Locations

• United States
  • California
    • Anaheim, California, United States, 92801
      • Anaheim Clinical Trials, LLC

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes

Description

Inclusion Criteria:

• Healthy (no clinically relevant abnormalities)
• BMI 30.0-45.4 inclusive

Exclusion Criteria:

• Current or history of significant clinical condition
• Use of prescription or nonprescription drugs and dietary and herbal supplements within 7 or 14 days or 5 half-lives (whichever is longer)
• Pregnant
• Breast feeding

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: Cohort 1: PF-07081532; Cohort 1 is an open-label, 9 period, fixed-sequence design to evaluate the effect of 2 steady state dose levels of PF-07081532 on the SD pharmacokinetics of midazolam and omeprazole, administered simultaneously, and an OC (LE/EE) in otherwise healthy obese adult female participants with a BMI ≥30 kg/m2.	Drug: PF-07081532; Experimental oral GLP-1 drug
Experimental: Cohort 2: Semaglutide; Cohort 2 is an open label, 4-period, fixed-sequence design to evaluate the effect of steady state semaglutide on the SD PK of midazolam in obese adult female participants with a BMI ≥30 kg/m2	Drug: Semaglutide; Approved and marketed GLP-1 drug for subcutaneous injection.; Other Names: Wegovy, Ozempic

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cohort 1: Area Under the Plasma Concentration-Time Profile From Time 0 Extrapolated to Infinite Time (AUCinf) of Midazolam in Periods 1, 4 and 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. AUCinf calculated area under the plasma concentration-time profile from time 0 extrapolated to infinite time.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration (AUClast) of Omeprazole in Periods 1, 4 and 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole PK at the preset time points described in the Time Frame. AUClast calculated area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: AUClast of Levonorgestrel (LE) in Periods 2, 5,and 8	LE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for LE PK at the preset time points described in the Time Frame. AUClast calculated area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to LE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: AUCinf of Ethinyl Estradiol (EE) in Periods 2, 5,and 8	EE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for EE PK at the preset time points described in the Time Frame. AUCinf calculated area under the plasma concentration-time profile from time 0 extrapolated to infinite time.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to EE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 2: AUCinf of Midazolam in Period 1 and 3	Midazolam was given on Day 1 in Period 1 and 3 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. AUCinf calculated area under the plasma concentration-time profile from time 0 extrapolated to infinite time.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Cohort 1: Number of Participants With All-Causality and Treatment-Related TEAEs	An adverse event (AE) was any untoward medical occurrence in a participant who received study treatment without regard to possibility of causal relationship. Treatment-related AE was any untoward medical occurrence attributed to study treatment in a participant who received study treatment. Relatedness to study treatment was assessed by the investigator. A serious adverse event (SAE) was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent events were events between first dose of study treatment and up to approximately 35 days that were absent before treatment or that worsened relative to pretreatment state.	From first dose (Day 1) to follow-up telephone contact (Days 153 to 160) in Cohort 1
Cohort 1: Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)	Laboratory tests (including hematology, clinical chemistry, urinalysis) were reported and abnormalities were defined for laboratory values that met specific criteria.	From first dose (Day 1) to follow-up telephone contact (Days 153 to 160) in Cohort 1
Cohort 1: Percentage of Change From Baseline in Body Weight by Period 9 Day 1	Percentage of changes from Baseline in body weight of the participants were measured.	From baseline (last pre-dose measurement in Period 1) to Period 9 Day 1 (Day 124)
Cohort 1: Number of Participants With Completed Suicide, Suicide Attempt, Preparatory Acts Towards Imminent Suicidal Behavior, Suicidal Ideation, or Self-Injurious Behavior of No Suicidal Intent As Assessed on the C-SSRS	The C-SSRS is an interview-based rating scale to systematically assess suicidal ideation and suicidal behavior. C-SSRS items were mapped to the following categories: completed suicide, suicide attempt, preparatory acts towards imminent suicidal behavior, suicidal ideation, and self-injurious behavior of no suicidal intent. Number of participants with completed suicide, suicide attempt, preparatory acts towards imminent suicidal behavior, suicidal ideation, or self-injurious behavior of no suicidal intent as assessed on the C-SSRS are reported below.	Screening, Study Day -1 (D-1) (ie, Period 1 Day -1 [P1D-1]), D7 (P3D1), D21 (P3D15), D35 (P4D1), D54 (P6D14), D68 (P6D28), D82 (P6D42), D96 (P6D56), D103 (P6D63), D110 (P8D6) and at follow up visit D132-135
Cohort 1: Patient Health Quessionare-9 (PHQ-9) Total Scores	The PHQ-9 is a 9 item self-report scale for the assessment of depressive symptoms. The PHQ-9 is completed by participants and reviewed by site staff at the pre-defined time points. The total score is derived by adding the corresponding values of responses to each item. The total score ranges from 0 to 27, with the following interpretation: 1-4: Minimal depression; 5-9: Mild depression; 10-14: Moderate depression; 15-19: Moderately severe depression; 20-27: Severe depression.	Screening, Study Day -1 (D-1) (ie, Period 1 Day -1 [P1D-1]), D7 (P3D1), D21 (P3D15), D35 (P4D1), D54 (P6D14), D68 (P6D28), D82 (P6D42), D96 (P6D56), D103 (P6D63), D110 (P8D6) and at follow up visit D132-135
Cohort 1: AUCinf of Midazolam in Period 9	Midazolam was given on Day 1 in Period 9 of Cohort 1 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. AUCinf calculated area under the plasma concentration-time profile from time 0 extrapolated to infinite time.	For Cohort 1 Period 9: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1
Cohort 1: Maximum Observed Concentration (Cmax) of Midazolam in Period 1, 4, 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Time for Cmax (Tmax) of Midazolam in Period 1, 4, 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam PK at the preset time points described in the Time Frame. Tmax was defined as time for Cmax and was observed directly from data.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Apparent Clearance (CL/F) of Midazolam in Period 1, 4, 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam PK at the preset time points described in the Time Frame. CL/F was defined as apparent clearance and was calculated as dose/AUCinf.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Apparent Volume of Distribution (Vz/F) of Midazolam in Period 1, 4, 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam PK at the preset time points described in the Time Frame. Vz/F was defined as apparent volume of distribution and was calculated as dose/(AUCinf*kel), where kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration time curve.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Terminal Half-Life (t1/2) of Midazolam in Period 1, 4, 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam PK at the preset time points described in the Time Frame. t1/2 was defined as terminal half life and was calculated as loge(2)/kel.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Cmax of Omeprazole in Period 1, 4, 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Tmax of Omeprazole in Period 1, 4, 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole PK at the preset time points described in the Time Frame. Tmax was defined as time for Cmax and was observed directly from data.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: CL/F of Omeprazole in Period 1, 4, 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole PK at the preset time points described in the Time Frame. CL/F was defined as apparent clearance and was calculated as dose/AUCinf.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Vz/F of Omeprazole in Period 1, 4, 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole PK at the preset time points described in the Time Frame. Vz/F was defined as apparent volume of distribution and was calculated as dose/(AUCinf*kel), where kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration time curve.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: t1/2 of Omeprazole in Period 1, 4, 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole PK at the preset time points described in the Time Frame. Vz/F was defined as apparent volume of distribution and was calculated as dose/(AUCinf ×kel), where kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration time curve.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Cmax of LE in Period 2, 5, 8	LE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for LE PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to LE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: Tmax of LE in Period 2, 5, 8	LE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for LE PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to LE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: CL/F of LE in Period 2, 5, 8	LE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for LE PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to LE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: Vz/F of LE in Period 2, 5, 8	LE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for LE PK at the preset time points described in the Time Frame. Vz/F was defined as apparent volume of distribution and was calculated as dose/(AUCinf*kel), where kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration time curve.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to LE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: t1/2 of LE in Period 2, 5, 8	LE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for LE PK at the preset time points described in the Time Frame. t1/2 was defined as terminal half life and was calculated as loge(2)/kel.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to LE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: Cmax of EE in Period 2, 5, 8	EE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for EE PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to EE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: Tmax of EE in Period 2, 5, 8	EE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for EE PK at the preset time points described in the Time Frame. Tmax was defined as time for Cmax and was observed directly from data.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to EE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: CL/F of EE in Period 2, 5, 8	EE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for EE PK at the preset time points described in the Time Frame. CL/F was defined as apparent clearance and was calculated as dose/AUCinf.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to EE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: Vz/F of EE in Period 2, 5, 8	EE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for EE PK at the preset time points described in the Time Frame. Vz/F was defined as apparent volume of distribution and was calculated as dose/(AUCinf*kel), where kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration time curve.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to EE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: t1/2 of EE in Period 2, 5, 8	EE was given on Day 1 in Period 2, 5, 8 of Cohort 1 and blood samples were collected for EE PK at the preset time points described in the Time Frame. t1/2 was defined as terminal half life and was calculated as loge(2)/kel.	For Cohort 1 Periods 2, 5, and 8: At 0 (prior to EE dose), 0.75, 2, 4, 8, 12, 24, 48, 72, 96 and 120 hours post LE dose on Day 1 of each period
Cohort 1: Metabolite/Parent Ratio for AUCinf (MRAUCinf) of 1-Hydroxy Midazolam in Period 1, 4, 7	Midazolam was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for midazolam (parent) and and its metabolite 1-Hydroxy Midazolam PK at the preset time points described in the Time Frame. MRAUCinf was calculated as (AUCinf, metabolite/AUCinf, parent) * (MWparent/MWmetabolite). MW = molecular weight.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: MRAUCinf of 5-Hydroxy Omeprazole in Period 1, 4, 7	Omeprazole was given on Day 1 in Period 1, 4, 7 of Cohort 1 and blood samples were collected for omeprazole (parent) and and its metabolite 5-Hydroxy omeprazole PK at the preset time points described in the Time Frame. MRAUCinf was calculated as (AUCinf, metabolite/AUCinf, parent) * (MWparent/MWmetabolite). MW = molecular weight.	For Cohort 1 Periods 1, 4, and 7: At 0 (prior to omeprazole dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 1: Area Under the Plasma Concentration-Time Profile From Time 0 to 24 Hours (AUC24) of PF-07081532 in Period 3 and 6	PF-07081532 was given titrated to 80 mg QD on Day 1-28 of Period 3, and titrated to 260 mg QD on Day 1-63 of Period 6 in Cohort 1, and blood samples were collected for PF-07081532 PK at the preset time points described in the Time Frame. AUC24 was defined as area under the plasma concentration-time profile from time 0 to 24 hours and was determined using the linear/log trapezoidal method.	For Cohort 1 Periods 3 and 6: At 0 , 0.5, 1, 2, 4, 6, 8, 10, 14, and 24 hours post PF-07081532 dose on Day 28 of Period 3 and Day 63 of Period 6
Cohort 1: Cmax of PF-07081532 in Period 3 and 6	PF-07081532 was given titrated to 80 mg QD on Day 1-28 of Period 3, and titrated to 260 mg QD on Day 1-63 of Period 6 in Cohort 1, and blood samples were collected for PF-07081532 PK at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 1 Periods 3 and 6: At 0 , 0.5, 1, 2, 4, 6, 8, 10, 14, and 24 hours post PF-07081532 dose on Day 28 of Period 3 and Day 63 of Period 6
Cohort 1: Tmax of PF-07081532 in Period 3 and 6	PF-07081532 was given titrated to 80 mg QD on Day 1-28 of Period 3, and titrated to 260 mg QD on Day 1-63 of Period 6 in Cohort 1, and blood samples were collected for PF-07081532 PK at the preset time points described in the Time Frame. Tmax was defined as time for Cmax and was observed directly from data.	For Cohort 1 Periods 3 and 6: At 0 , 0.5, 1, 2, 4, 6, 8, 10, 14, and 24 hours post PF-07081532 dose on Day 28 of Period 3 and Day 63 of Period 6
Cohort 2: Number of Participants With All-Causality and Treatment-Related TEAEs	An adverse event (AE) was any untoward medical occurrence in a participant who received study treatment without regard to possibility of causal relationship. Treatment-related AE was any untoward medical occurrence attributed to study treatment in a participant who received study treatment. Relatedness to study treatment was assessed by the investigator. A serious adverse event (SAE) was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment-emergent events were events between first dose of study treatment and up to approximately 35 days that were absent before treatment or that worsened relative to pretreatment state.	From first dose (Day 1) to follow-up telephone contact (Days 193 to 200) in Cohort 2
Cohort 2: Number of Participants With Laboratory Abnormalities (Without Regard to Baseline Abnormality)	Laboratory tests (including hematology, clinical chemistry, urinalysis) were reported and abnormalities were defined for laboratory values that met specific criteria.	From first dose (Day 1) to follow-up telephone contact (Days 193 to 200) in Cohort 2
Cohort 2: Percentage of Change From Baseline in Body Weight by Period 4 Day 1	Percentage of changes from Baseline in body weight of the participants were measured.	From baseline (last pre-dose measurement in Period 1) to Period 4 Day 1 (Day 165)
Cohort 2: Number of Participants With Completed Suicide, Suicide Attempt, Preparatory Acts Towards Imminent Suicidal Behavior, Suicidal Ideation, or Self-Injurious Behavior of No Suicidal Intent As Assessed on the C-SSRS	The C-SSRS is an interview-based rating scale to systematically assess suicidal ideation and suicidal behavior. C-SSRS items were mapped to the following categories: completed suicide, suicide attempt, preparatory acts towards imminent suicidal behavior, suicidal ideation, and self-injurious behavior of no suicidal intent. Number of participants with completed suicide, suicide attempt, preparatory acts towards imminent suicidal behavior, suicidal ideation, or self-injurious behavior of no suicidal intent as assessed on the C-SSRS are reported below.	Screening, D-1 (P1D-1), P2 Week 5 [W5], P2W9, P2W13, P2W17, D150 (P3D2), at follow up visit (Day 172-175)
Cohort 2: PHQ-9 Total Scores	The PHQ-9 is a 9 item self-report scale for the assessment of depressive symptoms. The PHQ-9 is completed by participants and reviewed by site staff at the pre-defined time points. The total score is derived by adding the corresponding values of responses to each item. The total score ranges from 0 to 27, with the following interpretation: 1-4: Minimal depression; 5-9: Mild depression; 10-14: Moderate depression; 15-19: Moderately severe depression; 20-27: Severe depression.	Screening, D-1 (P1D-1), P2 Week 5 [W5], P2W9, P2W13, P2W17, D150 (P3D2), at follow up visit (Day 172-175)
Cohort 2: AUCinf of Midazolam in Period 4	Midazolam was given on Day 1 in Period 4 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. AUCinf calculated area under the plasma concentration-time profile from time 0 extrapolated to infinite time.	For Cohort 2 Period 4: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14 and 24 hours post midazolam dose on Day 1
Cohort 2: Cmax of Midazolam in Period 1 and 3	Midazolam was given on Day 1 in Period 1 and 3 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. Cmax was defined as maximum observed concentration and was observed directly from data.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 2: Tmax of Midazolam in Period 1 and 3	Midazolam was given on Day 1 in Period 1 and 3 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. Tmax was defined as time for Cmax and was observed directly from data.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 2: CL/F of Midazolam in Period 1 and 3	Midazolam was given on Day 1 in Period 1 and 3 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. CL/F was defined as apparent clearance and was calculated as dose/AUCinf.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 2: Vz/F of Midazolam in Period 1 and 3	Midazolam was given on Day 1 in Period 1 and 3 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. Vz/F was defined as apparent volume of distribution and was calculated as dose/(AUCinf*kel), where kel is the terminal phase rate constant calculated by a linear regression of the log-linear concentration time curve.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 2: t1/2 of Midazolam in Period 1 and 3	Midazolam was given on Day 1 in Period 1 and 3 of Cohort 2 and blood samples were collected for midazolam pharmacokinetic (PK) at the preset time points described in the Time Frame. t1/2 was defined as terminal half life and was calculated as loge(2)/kel.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period
Cohort 2: MRAUCinf of 1-Hydroxy Midazolam in Period 1, 3, 4	Midazolam was given on Day 1 in Period 1, 3, 4 of Cohort 2 and blood samples were collected for midazolam (parent) and and its metabolite 1-Hydroxy Midazolam PK at the preset time points described in the Time Frame. MRAUCinf was calculated as (AUCinf, metabolite/AUCinf, parent) * (MWparent/MWmetabolite). MW = molecular weight.	For Cohort 2 Periods 1 and 3: At 0 (prior to midazolam dose), 0.5, 1, 2, 3, 4, 6, 8, 10, 14, 24 hours post midazolam dose on Day 1 of each period

Collaborators and Investigators

• Sponsor: Pfizer
• Investigators: Study Director: Pfizer CT.gov Call Center, Pfizer

Publications and helpful links

Helpful Links

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

Study record dates

Study Major Dates

• Study Start (Actual): January 19, 2023
• Primary Completion (Actual): November 3, 2023
• Study Completion (Actual): November 3, 2023

Study Registration Dates

• First Submitted: December 19, 2022
• First Submitted That Met QC Criteria: January 3, 2023
• First Posted (Actual): January 5, 2023

Study Record Updates

• Last Update Posted (Actual): March 25, 2025
• Last Update Submitted That Met QC Criteria: January 6, 2025
• Last Verified: January 1, 2025

More Information

Terms related to this study

• Keywords: Midazolam; Omeprazole; PF-07081532
• Additional Relevant MeSH Terms: Nutrition Disorders; Overnutrition; Body Weight; Overweight; Obesity; Glucagon-Like Peptide-1 Receptor Agonists; Physiological Effects of Drugs; Hypoglycemic Agents; Semaglutide
• Other Study ID Numbers: C3991040; NCT05671653 (Registry Identifier: ClinicalTrials.gov)

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: NO
• IPD Plan Description: Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: Yes
• Studies a U.S. FDA-regulated device product: No