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Upacitinib in Treatment of JAK/STAT Pathway Disorders With Activating Mutations
Sponsor: Lisa Satter
Summary
This study focuses on a genetic condition that affects the Janus Kinase-Signal Transducer and Activator of Transcription (JAK-STAT) immune signaling pathway. A specific change in the DNA leads to overactivation of this pathway, which can result in immune dysregulation and related clinical symptoms. Currently, five genetic mutations are known to cause these JAK-STAT pathway driven immune disorders: STAT1, STAT3, STAT5B, STAT6, and JAK1 (collectively referred to as JAK-STAT disorders). This study is a basket clinical trial, meaning patients with these different but related genetic conditions are enrolled in the same study and treated with the same investigational therapy. The purpose of this study is to evaluate the safety and tolerability (ability to tolerate) of a drug called Upadacitinib in patients with JAK-STAT disorders with activating mutations. This drug belongs to a class of drug called Janus kinase (JAK) inhibitors, also known as JAKinibs. It is a type of immune system modulating medication that regulates (fixes) the JAK- STAT signaling pathway. Upadacitinib has been approved by the FDA for multiple immunological diseases and disorders. Presently, there is no FDA approved treatment for this group of JAK-STAT disorders. The study will also investigate immune factors in the blood to develop diagnosis methods that can be used in the future for better medical management of these disorders. The study consists of four phases: screening phase, open label phase, randomized withdrawal phase and maintenance phase. The study will last approximately 12 months. While in the study, participants will receive a once daily dose of Upadacitinib that best helps control their disease. During the study participants will be asked to answer questions about their health and medical history. They will also complete physical exams, blood tests, and other questionnaires.
Official title: Safety and Efficacy of Upadacitinib in Treatment of JAK/STAT Pathway Disorders With Activating Mutations
Key Details
Gender
All
Age Range
12 Years - 65 Years
Study Type
INTERVENTIONAL
Enrollment
30
Start Date
2026-08
Completion Date
2028-08
Last Updated
2026-06-26
Healthy Volunteers
No
Interventions
Upadacitinib
Participants will receive the dose that worked best for them (optimal treatment dose, OTD) during the earlier open-label phase of the study, which may be 15 mg, 30 mg, or 45 mg taken once daily. The study drug will be taken by mouth as tablets.
Placebo
Participants assigned to the placebo group will receive placebo tablets taken once daily. The placebo will be matched to the participant's optimal treatment dose (OTD) determined during the earlier open-label phase of the study.
Locations (3)
Washington University in St.Louis
St Louis, Missouri, United States
Columbia University
New York, New York, United States
Baylor College of Medicine
Houston, Texas, United States