NCT06721013 A Study of Pirtobrutinib in Participants With Immune Thrombocytopenia
| NCT ID | NCT06721013 |
| Status | Recruiting |
| Phase | Phase 1, Phase 2 |
| Sponsor | Eli Lilly and Company |
| Condition | Immune Thrombocytopenia (ITP) |
| Study Type | INTERVENTIONAL |
| Enrollment | 68 participants |
| Start Date | 2025-07-30 |
| Primary Completion | 2028-02 |
Eligibility & Interventions
Eligibility Fast-Check
Enter your details for a quick preliminary check. This does not replace medical advice.
What to Expect as a Participant
You will actively receive the study intervention — which may be a drug, biologic, device, or procedure.
Phase 1 is the earliest stage of human testing — safety and dosage are the primary focus. Visits are frequent and medical supervision is intensive. You will be among the first people to receive this treatment.
This trial targets 68 participants in total. It began in 2025-07-30 with a primary completion date of 2028-02.
⚠ This information is for research awareness only. Always consult your physician before joining any clinical trial. Participation is voluntary and you may withdraw at any time.
Brief Summary
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.
Eligibility Criteria
Inclusion Criteria: * Have a diagnosis of primary ITP, defined as isolated thrombocytopenia not associated with another known disease process * Have documented history of response, defined as 2 or more platelet counts greater than or equal to 50,000/microliter (μL), to at least 1 prior line of therapy. Splenectomy is considered a line of therapy * Have relapsed or treatment-resistant primary ITP, with no available therapies known to provide clinical benefit * Have a platelet count less than 30,000/μL on 2 occasions at least 5 days apart in the 15 days before randomization * Have adequate liver, renal, and hematologic functions as defined by a table * Are willing to follow contraception requirements Exclusion Criteria: * Have a history of any thrombotic or embolic event within 12 months before screening * Had a transfusion with blood or blood products or plasmapheresis within 14 days (Phase 1) or within 28 days (Phase 2) of randomization * Have significant cardiovascular disease * Have a diagnosis or history of hematologic malignancy * Have hepatitis B virus (HBV) defined as positive for antigen of hepatitis B (HBsAg) or polymerase chain reaction (PCR) positive for HBV deoxyribonucleic acid (DNA) * Have hepatitis C virus (HCV) defined as positive for anti-HCV antibodies and PCR positive for HCV ribonucleic acid (RNA)
Contact & Investigator
Trial questions or participation questions: 1-877-CTLILLY (1-877-285-4559) or
✉ LillyTrials@Lilly.com📞 1-317-615-4559
Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 8 AM - 8 PM Eastern time (UTC/GMT - 5 hours, EST)
STUDY DIRECTOR
Eli Lilly and Company
Frequently Asked Questions
Who can join the NCT06721013 clinical trial?
This trial is open to participants of all sexes, aged 18 Years or older, studying Immune Thrombocytopenia (ITP). Full inclusion and exclusion criteria are listed in the Eligibility Criteria section. Always confirm your eligibility with the research team before applying.
What phase is the NCT06721013 trial and what does that mean for participants?
Phase 1 trials are the first stage of human testing. The primary goal is to assess safety and determine appropriate dosage levels. Participants are closely monitored. These trials typically involve a small number of volunteers.
Is NCT06721013 currently recruiting?
Yes, NCT06721013 is actively recruiting participants. Contact the research team at LillyTrials@Lilly.com for enrollment information.
Where is the NCT06721013 trial being conducted?
This trial is being conducted at Los Angeles, United States, Palo Alto, United States, Washington D.C., United States, Miami, United States and 11 additional locations.
Who is sponsoring the NCT06721013 clinical trial?
NCT06721013 is sponsored by Eli Lilly and Company. The principal investigator is Call 1-877-CTLILLY (1-877-285-4559) or 1-317-615-4559 Mon - Fri 8 AM - 8 PM Eastern time (UTC/GMT - 5 hours, EST) at Eli Lilly and Company. The trial plans to enroll 68 participants.