๐Ÿ›๏ธ Verified NIH Record โ€ข Updated 2026-05-04

ATOP TRIAL: T-DM1 in HER2 Positive Breast Cancer (NCT03587740)

ATOP TRIAL: Adjuvant Ado-Trastuzumab Emtansine (T-DM1) for Older Patients With Human Epidermal Growth Factor Receptor 2 (HER2)-Positive Breast Cancer

๐Ÿ”ต Active, Not Recruiting Phase2 ๐Ÿ’Š Investigational Drug / Biologic Sponsor: Dana-Farber Cancer Institute

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

This research study is studying an investigational drug as a possible treatment for breast cancer that is positive for the protein Human Epidermal Growth Factor Receptor 2, also known as HER2-positive breast cancer. The drug involved in this study is: -ado-trastuzumab emtansine (T-DM1)

Who can join: Review the eligibility criteria below.

Location: City of Hope Comprehensive Cancer Center โ€” Duarte, California

Age range: 60 Years

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 (14 Sites)

  • City of Hope Comprehensive Cancer Center โ€” Duarte, California
  • The Stamford Hospital โ€” Stamford, Connecticut
  • Dana Farber Cancer Institute โ€” Boston, Massachusetts
  • Massachusetts General Hospital โ€” Boston, Massachusetts
  • Dana-Farber Cancer Institute at St. Elizabeth's Medical Center โ€” Brighton, Massachusetts
  • Dana-Farber/Brigham and Women's Cancer Center at Milford Regional Medical Center โ€” Milford, Massachusetts
  • Dana-Farber/Brigham and Women's Cancer Center in clinical affiliation with South Shore Hospital โ€” South Weymouth, Massachusetts
  • Mayo Clinic โ€” Rochester, Minnesota
  • Dana-Farber/New Hampshire Oncology-Hematology โ€” Londonderry, New Hampshire
  • Memorial Sloan Kettering Cancer Center โ€” New York, New York
  • University of North Carolina โ€” Chapel Hill, North Carolina
  • Rex Cancer Center โ€” Raleigh, North Carolina
  • Lifespan Cancer Institute โ€” Providence, Rhode Island
  • Sarah Cannon Research Institute โ€” Nashville, Tennessee

๐Ÿ“ž Contact the Study Coordinator

Phone: (800) 826-4673

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

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.

Explore by condition: All Breast Cancer clinical trials

๐Ÿ’ก 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.
๐Ÿ›๏ธ View Official NIH Record โ†—