Study of RYZ401 in Subjects With Solid Tumors Expressing SSTRs.
Recruiting now Phase 1 NCT07165132
Run by RayzeBio, Inc. · for 18 and older · All sexes
What this study is about
The primary objectives are to determine the recommended Phase 2 dose (RP2D) and optimal treatment regimen, characterize safety and tolerability, and evaluate preliminary efficacy of RYZ401 in subjects with NETs and other selected solid tumors expressing SSTRs.
Who can join (things the study team will check)
✅ You may be able to join if…
- At least 18 years old at the time of signing the main study informed consent form (ICF).
- Histologically confirmed: Dose Escalation (all cohorts): Grades 1-3 WD, metastatic or locally advanced and unresectable NET at any primary site, including, but not limited to, GI, pancreatic, lung, thyroid, breast, urogenital, and adrenal tumors.
- Dose Expansion Cohort A: Grades 1-3 WD, metastatic or locally advanced and unresectable GEP-NETs
- Dose Expansion Cohort B: metastatic or locally advanced and unresectable tumors known to frequently express SSTR, limited to the following indications:
- WD NETs (Grades 1-3) from primary sites other than gastrointestinal and pancreatic (including, but not limited to, lung, thyroid, breast, urogenital, and adrenal tumors) Meningioma (Grades 1-3)
- SSTR-positive disease, as assessed by SSTR-PET imaging
- Adequate renal, hematologic and hepatic function
🚫 You may not be able to join if…
- Prior RPT, including Lu-177.
- Prior solid organ or bone marrow transplantation.
- Use of chronic systemic steroid therapy.
- Significant cardiovascular disease
- Resistant hypertension
- Uncontrolled diabetes
- Prior history of liver cirrhosis
- HIV, hepatitis B infection or known active hepatitis C virus infection. Note: Additional criteria may apply and will be assessed by the study site
Where this trial is running
- Research Facility, Iowa City, Iowa, United States
- Research Facility, Lexington, Kentucky, United States
- Research Facility, St Louis, Missouri, United States
- Research Facility, St Louis, Missouri, United States
- Research Facility, Columbus, Ohio, United States
- Research Facility, Nashville, Tennessee, United States
- Research Facility, Salt Lake City, Utah, United States
- Research Facility, Toronto, Ontario, Canada
- Research Facility, Montreal, Quebec, Canada
Who to contact
RayzeBio Clinical Trials · +1 619 657 0057 · clinicaltrials@rayzebio.com
It's completely normal to call and ask questions before deciding anything. Mention the study ID: NCT07165132.
Verify everything on the official ClinicalTrials.gov record. Page updated July 2026.
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