Pre-approval Single-patient Expanded Access for Ritlecitinib (PF-06651600)

November 17, 2025 updated by: Pfizer
Provide pre-approval single patient Expanded Access (compassionate use) of Ritlecitinib for patients.

Study Overview

Status

Available

Conditions

Intervention / Treatment

Detailed Description

In Expanded Access, treating physicians are the Sponsors. Expanded Access requests from treating physicians may be submitted to www.pfizercares.com. Availability will depend on location and country.

Study Type

Expanded Access

Expanded Access Type

  • Individual Patients

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

8 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Description

Must have ≥ 50% hair loss on scalp due to Alopecia Areata (AA) and be intolerant or have inadequate response to all commonly used AA therapies accessible in the country. Additional eligibility criteria may be required.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Pfizer

Collaborators

In Expanded Access, treating physicians are the Sponsors

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Registration Dates

First Submitted

August 26, 2022

First Submitted That Met QC Criteria

August 26, 2022

First Posted (Actual)

August 31, 2022

Study Record Updates

Last Update Posted (Actual)

November 18, 2025

Last Update Submitted That Met QC Criteria

November 17, 2025

Last Verified

November 1, 2025

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • B798

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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