🏛️ Verified NIH Record • Updated 2026-08-27

A Study of Dato-DXd in Inoperable or Metastatic Hormone Receptor-positive, HER2 IHC 0 Breast Cancer (NCT07205822)

A Phase IIIb, Open-label, Multinational Study Assessing the Efficacy and Safety of Dato-DXd Treatment in Patients With HRpositive, HER2 IHC 0, Locally Advanced Inoperable or Metastatic Breast Cancer Refractory to Endocrine Therapy (TROPION-Breast06)

🟢 Recruiting Phase3 💊 Investigational Drug / Biologic Sponsor: AstraZeneca

🩺 Plain-English Summary (8th-Grade Level)

A study to assess the efficacy and safety of Dato-DXd in the pre-chemotherapy setting for patients with metastatic HR-positive, HER2 IHC 0 breast cancer.

Who can join: Review the eligibility criteria below.

Location: Research Site — Largo, Florida

Age range: 18 Years

🧪 Interventions in This Study

📋 "Do I Qualify?" — 1-Minute Self Screener

Instant Checklist

Full eligibility criteria are available on the official NIH protocol. View the criteria ↗

📍 All Participating Trial Locations (40 Sites)

Showing the first 25 of 40 sites.

  • Research Site — Largo, Florida
  • Research Site — Fort Wayne, Indiana
  • Research Site — Omaha, Nebraska
  • Research Site — New York, New York
  • Research Site — Houston, Texas
  • Research Site — Puyallup, Washington
  • Research Site — Beijing,
  • Research Site — Changsha,
  • Research Site — Guangzhou,
  • Research Site — Linyi,
  • Research Site — Shandong,
  • Research Site — Wuhan,
  • Research Site — Zhengzhou,
  • Research Site — Clermont-Ferrand,
  • Research Site — La Roche-sur-Yon,
  • Research Site — Montpellier,
  • Research Site — Paris,
  • Research Site — Pierre-Bénite,
  • Research Site — Aviano,
  • Research Site — Florence,
  • Research Site — Meldola,
  • Research Site — Milan,
  • Research Site — Naples,
  • Research Site — Roma,
  • Research Site — Bukgu,

📞 Contact the Study Coordinator

Phone: (877) 240-9479

Email: information.center@astrazeneca.com

Coordinator details come directly from the registered NIH protocol. Confirm the study is still recruiting before traveling.

💰 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 § 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.

Explore by condition: All Breast Cancer clinical trials

💡 How to Participate

  1. Check the checklist above to see if you may qualify.
  2. Contact the study coordinator using the phone/email above.
  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.
🏛️ View Official NIH Record ↗