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A Study To Estimate The Effect of PF-06650833 On The Pharmacokinetics (PK) of Oral Contraceptive (OC)

A PHASE 1, OPEN LABEL, FIXED SEQUENCE STUDY TO ESTIMATE THE EFFECT OF MULTIPLE DOSE PF-06650833 ON THE PHARMACOKINETICS OF SINGLE DOSE ORAL CONTRACEPTIVE STEROIDS IN HEALTHY FEMALE PARTICIPANTS

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05064332
Enrollment
10
Registered
2021-10-01
Start date
2021-10-08
Completion date
2021-12-16
Last updated
2023-10-02

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

Conditions

Healthy

Brief summary

This is a Phase 1, open label, fixed sequence study of the effect of multiple dose PF-06650833 on single dose OC PK in healthy female subjects.

Interventions

400 mg by mouth (PO) Once daily (QD) for 11 days

Single dose of Oral tablet containing 30 ug EE and 150 ug of LN

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
BASIC_SCIENCE
Masking
NONE

Eligibility

Sex/Gender
FEMALE
Age
18 Years to 60 Years
Healthy volunteers
Yes

Inclusion criteria

Subjects must meet all of the following inclusion criteria to be eligible for enrollment in the study: 1. Healthy female subjects 2. Female subjects of non childbearing potential must meet at least 1 of the following criteria: 1. Achieved postmenopausal status, defined as follows: cessation of regular menses for at least 12 consecutive months with no alternative pathological or physiological cause; and have a serum follicle stimulating hormone (FSH) level confirming the postmenopausal state; 2. Have undergone a documented hysterectomy and/or bilateral oophorectomy; 3. Have medically confirmed ovarian failure. All other female subjects (including female subjects with tubal ligations) are considered to be of childbearing potential and will be eligible with adequate contraceptive usage. 3. Body mass index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight \>50 kg (110 lb).

Exclusion criteria

Subjects with any of the following characteristics/conditions will not be included in the study: 1. Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, gastrointestinal, cardiovascular, hepatic, psychiatric, neurological, or allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing). 2. History of alcohol abuse or binge drinking and/or any other illicit drug use or dependence within 6 months of Screening. Binge drinking is defined as a pattern of 5 (male) and 4 (female) or more alcoholic drinks in about 2 hours. As a general rule, alcohol intake should not exceed 14 units per week (1 unit = 8 ounces (240 mL) beer, 1 ounce (30 mL) of 40% spirit or 3 ounces (90 mL) of wine). 3. Any condition possibly affecting drug absorption (eg, gastrectomy, cholecystectomy). 4. Any current evidence of untreated active or latent or inadequately treated infection with Mycobacterium tuberculosis (TB). 5. History of human immunodeficiency virus (HIV), hepatitis B, or hepatitis C; positive testing 6. Benign ethnic (cyclic) neutropenia.

Design outcomes

Primary

MeasureTime frameDescription
Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration (AUClast) for Ethinyl EstradiolPredose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2AUClast was defined as area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. AUClast for EE was determined using linear/Log trapezoidal method.
Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration for LevonorgestrelPredose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2AUClast was defined as area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. AUClast for LN was determined using linear/Log trapezoidal method.
Maximum Plasma Concentration (Cmax) for Ethinyl EstradiolPredose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2Cmax was defined as maximum plasma concentration. Cmax for EE was observed directly from data.
Maximum Plasma Concentration for LevonorgestrelPredose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2Cmas was defined as maximum plasma concentration. Cmax for LN was observed directly from data.

Secondary

MeasureTime frameDescription
Number of Participants With Treatment Emergent Treatment-Related Adverse EventsFrom the first dose up to 35 days after the last dose of study interventionAn adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An serious adverse event (SAE) was defined as an AE: 1. resulting in death, 2. was life-threatening, 3. required inpatient hospitalization or prolongation of existing hospitalization, 4. resulted in persistent disability, 5. was a congenital anomaly/birth defect, or considered to be an important medical event. Treatment-related AE was any untoward medical occurrence attributed to study intervention in a participant who received study intervention. Treatment-emergent are events between first dose of study intervention and up to 35 days after last dose that were absent before treatment or that worsened relative to pretreatment state.
Number of Participants With Treatment Emergent Adverse Events by SeverityFrom the first dose up to 35 days after the last dose of study interventionAn AE was any untoward medical occurrence attributed to study intervention in a participant who received study intervention. AEs are classified according to the severity in 3 categories. a) mild - AEs does not interfere with participant's usual function; b) moderate - AEs interferes to some extent with participant's usual function; c) severe - AEs interferes significantly with participant's usual function. Only those categories in which at least 1 participant had data were reported.
Number of Participants With Categorical Vital Signs Data of Potential Clinical ConcernDay 1 for Period 1 and Day 1, Day 10, Day 12 for Period 2Systolic blood pressure (BP), diastolic BP and supine pulse rate measurements meeting the criteria of potential clinical concern were summarized by treatment using categories as defined: Systolic BP min. \<90 mmHg; Systolic BP max. decrease ≥30 or max. increase ≥30; Diastolic BP min. \<50 mmHg; Diastolic BP max. decrease ≥20 or max. increase ≥20; Supine pulse rate min. \<40 bpm or max. \>120 bpm.
Number of Participants With Laboratory Abnormalities of Potential Clinical ConcernDay 10, Day 12 for Period 2Hematology (hemoglobin, hematocrit, erythrocytes \[Ery.\], Ery.mean corpuscular volume, Ery.mean corpuscular hemoglobin, platelets, leukocytes, lymphocytes, neutrophils, basophils, eosinophils, monocytes); clinical chemistry (bilirubin, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, protein, albumin, urea nitrogen, creatinine, urate, sodium, potassium, chloride, calcium, bicarbonate, glucose, creatine kinase); and urinalysis (pH, glucose, ketones, protein, hemoglobin, urobilinogen, bilirubin, nitrite, leukocyte esterase, Ery., leukocytes, epithelial cells, casts and bacteria) tests were assessed. Only those categories, in which at least 1 participant had data were reported.

Countries

United States

Participant flow

Recruitment details

Participants were screened 28 days prior to the first dose of study intervention in Period 1 and reported to the clinical research unit the day prior to Day 1 dosing in Period 1.

Pre-assignment details

The study consisted of 2 periods in a single fixed sequence. Period 1 was immediately followed by Period 2 with no washout. A total of 10 participants were enrolled in the study.

Participants by arm

ArmCount
OC Then PF-06650833+ OC
Participants received a single oral dose of OC, containing EE 30 mcg and LN 150 mcg on Day 1 Period 1. After completion of Period 1, participants orally received PF-06650833 400 mg QD on Days 1-11 of Period 2 and a single oral dose of OC, containing of EE 30 mcg and LN 150 mcg on Day 10 Period 2.
10
Total10

Baseline characteristics

CharacteristicOC Then PF-06650833+ OC
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
0 Participants
Age, Categorical
Between 18 and 65 years
10 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
10 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
10 Participants
Sex: Female, Male
Female
10 Participants
Sex: Female, Male
Male
0 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
deaths
Total, all-cause mortality
0 / 100 / 100 / 10
other
Total, other adverse events
0 / 102 / 101 / 10
serious
Total, serious adverse events
0 / 100 / 100 / 10

Outcome results

Primary

Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration (AUClast) for Ethinyl Estradiol

AUClast was defined as area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. AUClast for EE was determined using linear/Log trapezoidal method.

Time frame: Predose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2

Population: The PK parameter analysis population was defined as all participants that received at least 1 dose of study intervention and had at least 1 of the PK parameters of primary interest reported in at least 1 period.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Period 1: Oral ContraceptiveArea Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration (AUClast) for Ethinyl Estradiol812.3 picogram*hour per milliliter (pg*hr/mL)Geometric Coefficient of Variation 25
Period 2: PF-06650833 + Oral ContraceptiveArea Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration (AUClast) for Ethinyl Estradiol823.9 picogram*hour per milliliter (pg*hr/mL)Geometric Coefficient of Variation 26
Comparison: OC alone as the Reference and co-administration of PF-06650833 and OC as the Test. Natural log transformed AUClast was analyzed using a mixed effects model with treatment as a fixed effect and participant as a random effect. Estimates of the adjusted mean differences (Test-Reference) and corresponding 90% confidence intervals (CIs) were obtained from the model and were exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% CIs for the ratios.90% CI: [93.01, 110.61]
Primary

Area Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration for Levonorgestrel

AUClast was defined as area under the plasma concentration-time profile from time 0 to the time of the last quantifiable concentration. AUClast for LN was determined using linear/Log trapezoidal method.

Time frame: Predose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2

Population: The PK parameter analysis population was defined as all participants that received at least 1 dose of study intervention and had at least 1 of the PK parameters of primary interest reported in at least 1 period.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Period 1: Oral ContraceptiveArea Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration for Levonorgestrel31510 pg*hr/mLGeometric Coefficient of Variation 39
Period 2: PF-06650833 + Oral ContraceptiveArea Under the Plasma Concentration-Time Profile From Time 0 to the Time of the Last Quantifiable Concentration for Levonorgestrel34190 pg*hr/mLGeometric Coefficient of Variation 41
Comparison: OC alone as the Reference and co-administration of PF-06650833 and OC as the Test. Natural log transformed AUClast was analyzed using a mixed effects model with treatment as a fixed effect and participant as a random effect. Estimates of the adjusted mean differences (Test-Reference) and corresponding 90% CIs were obtained from the model and were exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% CIs for the ratios.90% CI: [98.85, 119.11]
Primary

Maximum Plasma Concentration (Cmax) for Ethinyl Estradiol

Cmax was defined as maximum plasma concentration. Cmax for EE was observed directly from data.

Time frame: Predose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2

Population: The PK parameter analysis population was defined as all participants that received at least 1 dose of study intervention and had at least 1 of the PK parameters of primary interest reported in at least 1 period.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Period 1: Oral ContraceptiveMaximum Plasma Concentration (Cmax) for Ethinyl Estradiol84.00 picogram per milliliter (pg/mL)Geometric Coefficient of Variation 38
Period 2: PF-06650833 + Oral ContraceptiveMaximum Plasma Concentration (Cmax) for Ethinyl Estradiol79.86 picogram per milliliter (pg/mL)Geometric Coefficient of Variation 26
Comparison: OC alone as the Reference and co-administration of PF-06650833 and OC as the Test. Natural log transformed Cmax was analyzed using a mixed effects model with treatment as a fixed effect and participant as a random effect. Estimates of the adjusted mean differences (Test-Reference) and corresponding 90% confidence intervals (CIs) were obtained from the model and were exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% CIs for the ratios.90% CI: [84.44, 107.04]
Primary

Maximum Plasma Concentration for Levonorgestrel

Cmas was defined as maximum plasma concentration. Cmax for LN was observed directly from data.

Time frame: Predose, 0.5, 1, 1.5, 2, 4, 6, 8, 12, 24, 36 and 48 hours post OC dose in Periods 1 and 2

Population: The PK parameter analysis population was defined as all participants that received at least 1 dose of study intervention and had at least 1 of the PK parameters of primary interest reported in at least 1 period.

ArmMeasureValue (GEOMETRIC_MEAN)Dispersion
Period 1: Oral ContraceptiveMaximum Plasma Concentration for Levonorgestrel3468 pg/mLGeometric Coefficient of Variation 56
Period 2: PF-06650833 + Oral ContraceptiveMaximum Plasma Concentration for Levonorgestrel4092 pg/mLGeometric Coefficient of Variation 53
Comparison: OC alone as the Reference and co-administration of PF-06650833 and OC as the Test. Natural log transformed Cmax was analyzed using a mixed effects model with treatment as a fixed effect and participant as a random effect. Estimates of the adjusted mean differences (Test-Reference) and corresponding 90% CIs were obtained from the model and were exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% CIs for the ratios.90% CI: [101.82, 136.73]
Secondary

Number of Participants With Categorical Vital Signs Data of Potential Clinical Concern

Systolic blood pressure (BP), diastolic BP and supine pulse rate measurements meeting the criteria of potential clinical concern were summarized by treatment using categories as defined: Systolic BP min. \<90 mmHg; Systolic BP max. decrease ≥30 or max. increase ≥30; Diastolic BP min. \<50 mmHg; Diastolic BP max. decrease ≥20 or max. increase ≥20; Supine pulse rate min. \<40 bpm or max. \>120 bpm.

Time frame: Day 1 for Period 1 and Day 1, Day 10, Day 12 for Period 2

Population: The safety analysis set was defined as all participants enrolled to study intervention and who took at least 1 dose of study intervention.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Period 1: Oral ContraceptiveNumber of Participants With Categorical Vital Signs Data of Potential Clinical Concern0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Categorical Vital Signs Data of Potential Clinical Concern0 Participants
Secondary

Number of Participants With Laboratory Abnormalities of Potential Clinical Concern

Hematology (hemoglobin, hematocrit, erythrocytes \[Ery.\], Ery.mean corpuscular volume, Ery.mean corpuscular hemoglobin, platelets, leukocytes, lymphocytes, neutrophils, basophils, eosinophils, monocytes); clinical chemistry (bilirubin, aspartate aminotransferase, alanine aminotransferase, alkaline phosphatase, protein, albumin, urea nitrogen, creatinine, urate, sodium, potassium, chloride, calcium, bicarbonate, glucose, creatine kinase); and urinalysis (pH, glucose, ketones, protein, hemoglobin, urobilinogen, bilirubin, nitrite, leukocyte esterase, Ery., leukocytes, epithelial cells, casts and bacteria) tests were assessed. Only those categories, in which at least 1 participant had data were reported.

Time frame: Day 10, Day 12 for Period 2

Population: The safety analysis set was defined as all participants enrolled to study intervention and who took at least 1 dose of study intervention.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Period 1: Oral ContraceptiveNumber of Participants With Laboratory Abnormalities of Potential Clinical ConcernLeukocyte Esterase ≥12 Participants
Period 1: Oral ContraceptiveNumber of Participants With Laboratory Abnormalities of Potential Clinical ConcernUrine Hemoglobin ≥15 Participants
Secondary

Number of Participants With Treatment Emergent Adverse Events by Severity

An AE was any untoward medical occurrence attributed to study intervention in a participant who received study intervention. AEs are classified according to the severity in 3 categories. a) mild - AEs does not interfere with participant's usual function; b) moderate - AEs interferes to some extent with participant's usual function; c) severe - AEs interferes significantly with participant's usual function. Only those categories in which at least 1 participant had data were reported.

Time frame: From the first dose up to 35 days after the last dose of study intervention

Population: The safety analysis set was defined as all participants enrolled to study intervention and who took at least 1 dose of study intervention.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Period 1: Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityNausea (mild)0 Participants
Period 1: Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityToothache (mild)0 Participants
Period 1: Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityHeadache (mild)0 Participants
Period 1: Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityPruritus (mild)0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityPruritus (mild)2 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityNausea (mild)1 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityHeadache (mild)1 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityToothache (mild)0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityPruritus (mild)0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityToothache (mild)1 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityHeadache (mild)0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Adverse Events by SeverityNausea (mild)0 Participants
Secondary

Number of Participants With Treatment Emergent Treatment-Related Adverse Events

An adverse event (AE) is any untoward medical occurrence in a clinical study participant, temporally associated with the use of study intervention, whether or not considered related to the study intervention. An serious adverse event (SAE) was defined as an AE: 1. resulting in death, 2. was life-threatening, 3. required inpatient hospitalization or prolongation of existing hospitalization, 4. resulted in persistent disability, 5. was a congenital anomaly/birth defect, or considered to be an important medical event. Treatment-related AE was any untoward medical occurrence attributed to study intervention in a participant who received study intervention. Treatment-emergent are events between first dose of study intervention and up to 35 days after last dose that were absent before treatment or that worsened relative to pretreatment state.

Time frame: From the first dose up to 35 days after the last dose of study intervention

Population: The safety analysis set was defined as all participants enrolled to study intervention and who took at least 1 dose of study intervention.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
Period 1: Oral ContraceptiveNumber of Participants With Treatment Emergent Treatment-Related Adverse EventsTreatment-related AEs0 Participants
Period 1: Oral ContraceptiveNumber of Participants With Treatment Emergent Treatment-Related Adverse EventsTreatment-related SAEs0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Treatment-Related Adverse EventsTreatment-related AEs0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Treatment-Related Adverse EventsTreatment-related SAEs0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Treatment-Related Adverse EventsTreatment-related AEs0 Participants
Period 2: PF-06650833 + Oral ContraceptiveNumber of Participants With Treatment Emergent Treatment-Related Adverse EventsTreatment-related SAEs0 Participants

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