๐Ÿ›๏ธ Verified NIH Record โ€ข Updated 2026-08-20

Trial of 225Ac-DOTATATE (RYZ101) in Subjects With ER+, HER2-negative Unresectable or Metastatic Breast Cancer Expressing SSTRs. (NCT06590857)

Phase 1b/2 Open-label Trial of 225Ac-DOTATATE (RYZ101) in Subjects With Estrogen Receptor-positive (ER+), Human Epidermal Growth Factor Receptor 2 (HER2)-Negative, Locally Advanced and Unresectable or Metastatic Breast Cancer Expressing Somatostatin Receptors (SSTRs) (TRACY-1).

๐Ÿ”ต Active, Not Recruiting Phase1 / Phase2 ๐Ÿ’Š Investigational Drug / Biologic Sponsor: RayzeBio, Inc.

๐Ÿฉบ Plain-English Summary (8th-Grade Level)

Phase 1b/2 open-label trial of 225Ac-DOTATATE (RYZ101) in subjects with ER+, HER2-negative unresectable or metastatic breast cancer expressing SSTRs.

Who can join: Review the eligibility criteria below.

Location: Research Facility โ€” Phoenix, Arizona

๐Ÿงช Interventions in This Study

๐Ÿ“‹ "Do I Qualify?" โ€” 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria โ†—

๐Ÿ“ All Participating Trial Locations (31 Sites)

Showing the first 25 of 31 sites.

  • Research Facility โ€” Phoenix, Arizona
  • Research Facility โ€” Irvine, California
  • Research Facility โ€” San Diego, California
  • Research Facility โ€” Santa Monica, California
  • Research Facility โ€” Longmont, Colorado
  • Research Facility โ€” Jacksonville, Florida
  • Research Facility โ€” Atlanta, Georgia
  • Research Facility โ€” Indianapolis, Indiana
  • Research Facility โ€” Boston, Massachusetts
  • Research Facility โ€” Detroit, Michigan
  • Research Facility โ€” Rochester, Minnesota
  • Research Facility โ€” St Louis, Missouri
  • Research Facility โ€” Omaha, Nebraska
  • Research Facility โ€” Albuquerque, New Mexico
  • Research Facility โ€” Buffalo, New York
  • Research Facility โ€” New York, New York
  • Research Facility โ€” New York, New York
  • Research Facility โ€” Cleveland, Ohio
  • Research Facility โ€” Philadelphia, Pennsylvania
  • Research Facility โ€” Pittsburgh, Pennsylvania
  • Research Facility โ€” Dallas, Texas
  • Research Facility โ€” Houston, Texas
  • Research Facility โ€” Salt Lake City, Utah
  • Research Facility โ€” Norfolk, Virginia
  • Research Facility โ€” Seattle, Washington

๐Ÿ’ฐ Cost, Insurance & Patient Rights

  • 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
  • Routine Patient Care: Under federal law (ACA ยง 2709) and many state statutes, routine care costs are covered during participation.
  • Voluntary Participation: You may withdraw at any time without affecting your standard medical care.

๐Ÿ’ก How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Review the official NIH record below to find the coordinating site.
  3. Ask about the visit schedule, what is covered at no cost, and any travel support.
  4. Confirm with your own doctor before making a decision.
๐Ÿ›๏ธ View Official NIH Record โ†—