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Study identifier: NCT06721013 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

A Study of Pirtobrutinib in Participants With Immune Thrombocytopenia

Condition: Immune Thrombocytopenia (ITP)  ·  Sponsor: Eli Lilly and Company

PhasePhase 1/Phase 2
Planned participants68
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The purpose of the phase 1 part of this study was to evaluate how well pirtobrutinib is tolerated and what side effects may occur. The phase 2 part of the study will further investigate efficacy and safety of multiple pirtobrutinib dosages versus placebo. The study drug will be administered orally in participants with Primary Immune Thrombocytopenia (ITP). Blood tests will be performed to check how much pirtobrutinib gets into the bloodstream and how long it takes the body to eliminate it. The study will last up to approximately 16 weeks for phase 1 dose-escalation and 28 weeks for phase 2 dose-optimization, excluding screening.

This description comes directly from the study's public registry record.

Talk to the study team

Trial questions or participation questions: 1-877-CTLILLY (1-877-285-4559) or  ·  1-317-615-4559  ·  LillyTrials@Lilly.com

Physicians interested in becoming principal investigators please contact  ·  clinical_inquiry_hub@lilly.com

Always discuss trial participation with your own doctor first.

Locations (45)

USC Norris Comprehensive Cancer CenterLos Angeles, California, United StatesRecruiting
Stanford UniversityStanford, California, United StatesNot Yet Recruiting
MedStar Georgetown University HospitalWashington D.C., District of Columbia, United StatesRecruiting
University of Miami Hospital and Clinics Sylvester Comprehensive Cancer CenterMiami, Florida, United StatesNot Yet Recruiting
Bleeding and Clotting Disorders InstitutePeoria, Illinois, United StatesNot Yet Recruiting
Ochsner Clinic FoundationNew Orleans, Louisiana, United StatesRecruiting
Mayo ClinicRochester, Minnesota, United StatesNot Yet Recruiting
Clinical Research AllianceWestbury, New York, United StatesRecruiting
Texas Oncology - Central SouthAustin, Texas, United StatesNot Yet Recruiting
MD Anderson Cancer CenterHouston, Texas, United StatesRecruiting
Texas Oncology Gulf CoastThe Woodlands, Texas, United StatesNot Yet Recruiting
Nanfang Hospital of Southern Medical UniversityGuangzhou, ChinaNot Yet Recruiting

+ 33 more locations — full list on the registry record.

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Source record: clinicaltrials.gov/study/NCT06721013