A Study to Determine the Effects of PF-04965842 on Midazolam PK in Healthy Volunteers

A PHASE 1, RANDOMIZED, 2-WAY CROSSOVER, MULTIPLE DOSE, OPEN LABEL STUDY OF THE EFFECT OF PF-04965842 ON MIDAZOLAM PHARMACOKINETICS IN HEALTHY VOLUNTEERS

This is a Phase 1, randomized, 2-way crossover, multiple dose, open label study of the effect of PF-04965842 on midazolam PK in healthy subjects. The study will demonstrate the effect of multiple dose PF-04965842 on the pharmacokinetics of a single, oral dose of midazolam in healthy subjects.

Study Overview

• Status: Completed
• Conditions: Phase 1
• Intervention / Treatment: Drug: PF-04965842; Drug: Midazolam

Detailed Description

Subjects will be randomized to 1 of 2 treatment sequences as described below. A total of 24 healthy male and/or female subjects will be enrolled in the study so that 12 subjects will be enrolled in each treatment sequence. Each treatment sequence will consist of 2 periods in a single fixed sequence. Subjects will be screened within 28 days of the first dose of study medication. Subjects will report to the clinical research unit (CRU) the day prior to (or Day -1) Day 1 dosing in Period 1 for both treatment sequences. In Sequence 1 subjects will remain in the CRU for a total of 11 days and 10 nights (including Period 1 and Period 2). In Sequence 2, Period 1, subjects will remain in the CRU for 9 days and 8 nights. In Sequence 2, Period 2, subjects will remain in the CRU for 3 days and 2 nights. In Sequence 1, Period 1, subjects will be dosed with a single administration of midazolam 2 mg oral solution on Day 1. Midazolam PK will then be assessed over the next 24 hours (hr). Period 1 will be immediately followed by Period 2 with no washout, in which subjects will be dosed with 200 mg PF-04965842 orally once daily (QD) for 7 days. Midazolam 2 mg oral solution will be administered on the morning of Day 2 and Day 7 within 5 minutes after PF-04965842 dosing. Midazolam PK will be assessed for 24 hr following dosing.In Sequence 2, Period 1, subjects will be dosed with 200 mg PF-04965842 orally QD for 7 days. Midazolam 2 mg oral solution will be administered on the morning of Day 2 and Day 7 within 5 minutes after PF-04965842 dosing. Midazolam PK will be assessed for 24 hr following dosing. Subjects will then undergo a washout period of at least 7 days. In Period 2 subjects will be dosed with a single administration of midazolam 2 mg oral solution on Day 1. Midazolam PK will then be assessed over the next 24 hr.

• Study Type: Interventional
• Enrollment (Actual): 25
• Phase: Phase 1

Contacts and Locations

Study Locations

• Belgium
  • Brussels, Belgium, B-1070
    • Pfizer Clinical Research Unit

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 55 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Evidence of a personally signed and dated informed consent document indicating that the subject has been informed of all pertinent aspects of the study
• Willing and able to comply with scheduled visits, treatment plan, laboratory tests and other study procedures
• Healthy female subjects and/or male subjects who, at the time of screening, are between the ages of 18 and 55 years, inclusive
• Female subjects with child-bearing potential must not be intending to become pregnant, currently pregnant, or lactating. Conditions apply: negative pregnancy test, effective method of contraception
• Non-childbearing potential must meet at least 1 of the following criteria: documented hysterectomy and/or bilateral oophorectomy, ovarian failure, achieved postmenopausal status confirmed with FSH
• Body mass index (BMI) of 17.5 to 30.5 kg/m2; and a total body weight >50 kg (110 lbs)

Exclusion Criteria:

• Evidence or history of clinically significant hematological, renal, endocrine, pulmonary, GI, CV, hepatic, psych, neurological, or allergic disease (including drug allergies, but excluding seasonal)
• Evidence or history of clinically significant dermatological condition (eg, contact dermatitis or psoriasis) or visible rash present during physical examination
• Subjects, who according to the product label for midazolam, would be at increased risk if dosed with midazolam
• Self-reported history or risk factors for QT prolongation or torsades de pointes, congenital deafness, family history of sudden death, and family history of long QT syndrome
• Any condition possibly affecting drug absorption (eg, gastrectomy)
• A positive urine drug test
• History of regular alcohol consumption exceeding 14 for female or 21 for male drinks/week (1 drink = 5 ounces of wine or 12 ounces of beer or 1.5 ounces of hard liquor) within 6 months of screening
• Treatment with an investigational drug within 30 days (or as determined by the local requirement) or 5 half-lives preceding the first dose of investigational product (whichever is longer)
• Following at least 5 minutes of supine rest, screening supine systolic BP <90 mm Hg or >=140 mm Hg, or screening supine diastolic BP <50 mm Hg or >=90 mm Hg. Any criteria met, BP should be repeated
• Screening supine 12-lead ECG demonstrating: QTcF >450 msec or QRS interval >120 msec. If QTcF exceeds 450 msec, or QRS exceeds 120 msec, the ECG should be repeated
• AST/SGOT or ALT/SGPT >=1.5 × ULN. Total bilirubin level >1× ULN; subjects with a hx of Gilbert's syndrome must have direct bilirubin <= ULN Known relevant history of elevated liver function tests (LFTs)
• History of tuberculosis (TB) (active or latent) or inadequately treated TB infection. Positive QuantiFERON® - TB Gold test
• Any history of chronic infections, any history of recurrent infections, any history of latent infections, or any acute infection within 2 weeks of baseline
• History of disseminated herpes zoster, or disseminated herpes simplex, or recurrent localized dermatomal herpes zoster
• History of sensitivity to heparin or heparin-induced thrombocytopenia
• Pregnant or breastfeeding female; fertile male and WOCBP unwilling to use a highly effective method of contraception through study duration and for at least 28 days after the last dose
• Use of medications and dietary supplements within 7 days or 5 half-lives prior to first dose, acetaminophen/paracetamol <=1 g/day exception. Herbal supplements and hormonal methods of contraception
• Use of tobacco- or nicotine- containing products in excess of the equivalent of 5 cigarettes per day
• Blood donation (excluding plasma donations) of approximately 1 pint (500 mL) or more within 60 days prior to first dose of investigational product
• History of hypersensitivity to midazolam or any other bezodiazapine
• History of HIV, hepatitis B or C; positive testing for HIV, HepBsAg, HepBcAb or HCVAb. As an exception, a positive HepBsAb as a result of subject vaccination is permissible
• Unwilling or unable to comply with the criteria in the Lifestyle Requirements section of this protocol
• Investigator site staff members and their family members, site staff members otherwise supervised by the investigator, or subjects who are Pfizer employees, including their family members
• Other medical or psych condition including active suicidal ideation/ behavior or lab abnormality that the investigator deems inappropriate for this study or may interfere with study results
• Have any malignancies or have a history of malignancies with the exception of adequately treated or excised non-metastatic basal cell or squamous cell cancer of the skin, or cervical carcinoma in situ
• Subjects at significant risk of suicidal or violent behavior

Study Plan

How is the study designed?

Design Details

• Primary Purpose: OTHER
• Allocation: RANDOMIZED
• Interventional Model: CROSSOVER
• Masking: NONE

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
OTHER: Sequence 1; In Sequence 1, Period 1, subjects will be dosed with a single administration of midazolam 2 mg oral solution on Day 1. Midazolam PK will then be assessed over the next 24 hours (hr). Period 1 will be immediately followed by Period 2 with no washout, in which subjects will be dosed with 200 mg PF-04965842 orally once daily (QD) for 7 days. Midazolam 2 mg oral solution will be administered on the morning of Day 2 and Day 7 within 5 minutes after PF-04965842 dosing. Midazolam PK will be assessed for 24 hr following dosing.	Drug: PF-04965842; orally bioavailable small molecule that selectively inhibits JAK1 by blocking the adenosine triphosphate (ATP) binding site.; Other Names: JAK1 Inhibitor; Drug: Midazolam; substrate which undergoes extensive metabolism by CYP3A4 and CYP3A5 and acts as a sensitive probe for evaluating drug interaction with respect to these isoenzymes
OTHER: Sequence 2; In Sequence 2, Period 1, subjects will be dosed with 200 mg PF-04965842 orally QD for 7 days. Midazolam 2 mg oral solution will be administered on the morning of Day 2 and Day 7 within 5 minutes after PF-04965842 dosing. Midazolam PK will be assessed for 24 hr following dosing. Subjects will then undergo a washout period of at least 7 days. In Period 2 subjects will be dosed with a single administration of midazolam 2 mg oral solution on Day 1. Midazolam PK will then be assessed over the next 24 hr.	Drug: PF-04965842; orally bioavailable small molecule that selectively inhibits JAK1 by blocking the adenosine triphosphate (ATP) binding site.; Other Names: JAK1 Inhibitor; Drug: Midazolam; substrate which undergoes extensive metabolism by CYP3A4 and CYP3A5 and acts as a sensitive probe for evaluating drug interaction with respect to these isoenzymes

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
AUCinf of midazolam.	To demonstrate the effect of multiple dose PF-04965842 on the pharmacokinetics of a single, oral dose of midazolam in healthy subjects. The lack of an effect of PF-04965842 on midazolam PK will be concluded if the 90% confidence interval for the ratio of adjusted geometric mean for AUCinf falls wholly within (80%, 125%).	8 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
AUClast of midazolam	Adjusted mean differences and 90% confidence intervals for the differences will be exponentiated to provide estimates of the ratio of adjusted geometric means and 90% confidence intervals for the ratios.	8 days
Blood Pressure	Number of Subjects with Data of Potential Clinical Concern	8 days
Cmax of midazolam.	Adjusted mean differences and 90% confidence intervals for the differences will be exponentiated to provide estimates of the ratio of adjusted geometric means and 90% confidence intervals for the ratios.	8 days
Tmax of midazolam.	Adjusted mean differences and 90% confidence intervals for the differences will be exponentiated to provide estimates of the ratio of adjusted geometric means and 90% confidence intervals for the ratios.	8 days
t1/2 of midazolam.	Adjusted mean differences and 90% confidence intervals for the differences will be exponentiated to provide estimates of the ratio of adjusted geometric means and 90% confidence intervals for the ratios.	8 days
Pulse	Number of Subjects with Data of Potential Clinical Concern	8 days
Temperature	Number of subjects with data of potential clinical concern	8 days
Adverse Events	Number of Subjects With Treatment-Related Treatment Emergent Adverse Events (TEAEs)	8 days
Laboratory tests	Number of Subjects with Laboratory Test Abnormailities	8 days

Collaborators and Investigators

• Sponsor: 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): July 3, 2018
• Primary Completion (ACTUAL): October 16, 2018
• Study Completion (ACTUAL): October 16, 2018

Study Registration Dates

• First Submitted: July 12, 2018
• First Submitted That Met QC Criteria: August 23, 2018
• First Posted (ACTUAL): August 27, 2018

Study Record Updates

• Last Update Posted (ACTUAL): March 23, 2020
• Last Update Submitted That Met QC Criteria: March 19, 2020
• Last Verified: March 1, 2020

More Information

Terms related to this study

• Keywords: PF-04965842
• Additional Relevant MeSH Terms: Physiological Effects of Drugs; Neurotransmitter Agents; Molecular Mechanisms of Pharmacological Action; Central Nervous System Depressants; Enzyme Inhibitors; Anesthetics, Intravenous; Anesthetics, General; Anesthetics; Tranquilizing Agents; Psychotropic Drugs; Protein Kinase Inhibitors; Hypnotics and Sedatives; Adjuvants, Anesthesia; Anti-Anxiety Agents; GABA Modulators; GABA Agents; Midazolam; Abrocitinib
• Other Study ID Numbers: B7451022; 2018-001198-26 (EUDRACT_NUMBER)

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