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

NCT03647670 | Completed Phase 1 FDA Drug

• 2 other identifiers: B74510222018-001198-26
• Study Type: interventional
• Target: 25
• Locations: 1 country
• Sites: 1

Brief Summary

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.

Conditions

Phase 1

Keywords

PF-04965842

Outcome Measures

Primary Outcomes (1)

• 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 Outcomes (9)

• AUClast of midazolam

  8 days

• Blood Pressure

  8 days

• Cmax of midazolam.

  8 days

• Tmax of midazolam.

  8 days

• t1/2 of midazolam.

  8 days

Study Arms (2)

Sequence 1

OTHER

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; Drug: Midazolam

Sequence 2

OTHER

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; Drug: Midazolam

Interventions

PF-04965842 DRUG

orally bioavailable small molecule that selectively inhibits JAK1 by blocking the adenosine triphosphate (ATP) binding site.

Also known as: JAK1 Inhibitor

Sequence 1; Sequence 2

Midazolam DRUG

substrate which undergoes extensive metabolism by CYP3A4 and CYP3A5 and acts as a sensitive probe for evaluating drug interaction with respect to these isoenzymes

Sequence 1; Sequence 2

Eligibility Criteria

• Age: 18 Years - 55 Years
• Sex: all
• Healthy Volunteers: Yes
• Age Groups: Adult (18-64)

You may qualify if:

• 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)

You may not qualify if:

• 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

Sponsors & Collaborators

• Pfizer: lead

Study Sites (1)

Pfizer Clinical Research Unit

Brussels, B-1070, Belgium

Location

Related Publications (1)

• Wang X, Dowty ME, Tripathy S, Le VH, Huh Y, Curto M, Winton JA, O'Gorman MT, Chan G, Malhotra BK. Assessment of the Effects of Abrocitinib on the Pharmacokinetics of Probe Substrates of Cytochrome P450 1A2, 2B6 and 2C19 Enzymes and Hormonal Oral Contraceptives in Healthy Individuals. Eur J Drug Metab Pharmacokinet. 2024 May;49(3):367-381. doi: 10.1007/s13318-024-00893-5. Epub 2024 Mar 30.

  PMID: 38554232 DERIVED

Related Links

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

MeSH Terms

Interventions

abrocitinib; Midazolam

Intervention Hierarchy (Ancestors)

Benzodiazepines; Benzazepines; Heterocyclic Compounds, 2-Ring; Heterocyclic Compounds, Fused-Ring; Heterocyclic Compounds

Study Officials

• Pfizer CT.gov Call Center

  Pfizer

  STUDY DIRECTOR

Study Design

• Study Type: interventional
• Phase: phase 1
• Allocation: RANDOMIZED
• Masking: NONE
• Purpose: OTHER
• Intervention Model: CROSSOVER
• Sponsor Type: INDUSTRY
• Responsible Party: SPONSOR

Model Details: Natural log transformed area under the curve from zero to infinity, area under the plasma concentration-time curve from 0 to the time of last measurement and max plasma concentration of midazolam will be analyzed using a mixed effect model with sequence, period and treatment as fixed effects and subject within sequence as a random effect. Estimates of the adj mean differences (Test-Reference) and corresponding 90% CIs will be obtained from the model. The adjusted mean differences and 90% CIs for the differences will be exponentiated to provide estimates of the ratio of adjusted geometric means (Test/Reference) and 90% confidence intervals for the ratios. Midazolam alone will be the Reference treatment, while the midazolam co-administered with PF-04965842 will be the Test treatment. The lack of an effect of PF-04965842 on midazolam PK will be concluded if the 90% CI for the ratio of adjusted geometric mean for AUCinf falls wholly within acceptance region (80%, 125%).

Study Record Dates

• First Submitted: July 12, 2018
• First Posted: August 27, 2018
• Study Start: July 3, 2018
• Primary Completion: October 16, 2018
• Study Completion: October 16, 2018
• Last Updated: March 23, 2020

Record last verified: 2020-03

Data Sharing

• IPD Sharing: Will not share

Locations

BE (1)