A Study to Learn About Three Forms of The Study Medicine (Ritlecitinib) in Healthy Adults

NCT06172348 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2025-04-10

Study results available
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Summary

The purpose of this study is to compare if three forms of study medicine (called ritlecitinib) get processed differently in healthy adults.

This study is seeking healthy participants who have:

* Aged 18 years or older;
* male or female who are healthy as determined by medical assessment;
* BMI of 16-32 kg/m2, and a total body weight \>45 kg (99 lb).

All participants in this study will receive a ritlecitinib oral dose in three different forms (solution, capsule 1 and capsule 2).

The study will take up to 2.5 months, including the screening period and follow-up phone call. Participants will have to stay at the study clinic for at least 13 days. There will be 4 periods in total for this study. On day 1 of each period, participants will take one form of Riltecitinib without food for the first three periods and with food for the last period. Participants will have blood samples taken both before and after taking ritlecitinib. A follow-up phone call will be made at 28 to 35 days after the last study period.

Conditions

  • Healthy Volunteers

Interventions

DRUG

Ritlecitinib

Ritlecitinib 100 milligrams (mg) will be provided as either solution or capsule formulation (2 capsules of 50 mg)

Sponsors & Collaborators

Principal Investigators

  • Pfizer CT.gov Call Center · Pfizer

Study Design

Allocation
RANDOMIZED
Purpose
BASIC_SCIENCE
Masking
NONE
Model
CROSSOVER

Eligibility

Min Age
18 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2024-02-01
Primary Completion
2024-03-28
Completion
2024-03-28
FDA Drug
Yes

Countries

  • Belgium

Study Locations

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Entities

Companies

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT06172348 on ClinicalTrials.gov