NCT03647670

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

• Status: Completed
• Phase: Phase 1
• Study type: Interventional
• Enrollment: 25 (actual)
• Sponsor: Pfizer · Industry
• Sex: All
• Age: 18 Years – 55 Years
• Healthy volunteers: Accepted

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.

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.

Conditions

• Phase 1

Interventions

Type	Name	Description
DRUG	PF-04965842	orally bioavailable small molecule that selectively inhibits JAK1 by blocking the adenosine triphosphate (ATP) binding site.
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

Timeline

• Start date: 2018-07-03
• Primary completion: 2018-10-16
• Completion: 2018-10-16
• First posted: 2018-08-27
• Last updated: 2020-03-23

Locations

1 site across 1 country: Belgium

Regulatory

• FDA-regulated drug study