🏛️ Verified NIH Record • Updated 2026-08-18

[177Lu]Lu-NeoB in Combination With Ribociclib and Fulvestrant in Participants With ER+, HER2- and GRPR+ Advanced Breast Cancer (NCT05870579)

A Phase Ib Dose Finding Study Assessing Safety and Activity of [177Lu]Lu-NeoB in Combination With Ribociclib and Fulvestrant in Participants With Estrogen Receptor Positive, Human Epidermal Growth Factor Receptor-2 Negative and Gastrin Releasing Peptide Receptor Positive Advanced Breast Cancer Experiencing Early Relapse From (Neo)Adjuvant Endocrine Therapy or Who Have Progressed on Endocrine Therapy in Combination With a CDK4/6 Inhibitor for Advanced Disease

🔵 Active, Not Recruiting Phase1 💊 Investigational Drug / Biologic Sponsor: Novartis Pharmaceuticals

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

The purpose of this trial is to estimate the recommended dose (RD) of \[177Lu\]Lu-NeoB in combination with ribociclib and fulvestrant in participants with estrogen receptor (ER) positive (ER+), human epidermal growth factor receptor-2 (HER2) negative (HER2-) and gastrin releasing peptide receptor (GRPR) positive (GRPR+) advanced breast cancer experiencing early relapse from (neo)adjuvant endocrine therapy or who have progressed on endocrine therapy in combination with a CDK4/6 inhibitor for advanced disease.

Who can join: Review the eligibility criteria below.

Location: UCLA Jonsson Comp Cancer Center — Los Angeles, California

Age range: 18 Years to 100 Years

📋 "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 (13 Sites)

  • UCLA Jonsson Comp Cancer Center — Los Angeles, California
  • MD Anderson Cancer Center — Houston, Texas
  • Novartis Investigative Site — Shanghai,
  • Novartis Investigative Site — Saint-Cloud, Hauts De Seine
  • Novartis Investigative Site — Bordeaux,
  • Novartis Investigative Site — Saint-Herblain,
  • Novartis Investigative Site — Cologne, North Rhine-Westphalia
  • Novartis Investigative Site — Gliwice,
  • Novartis Investigative Site — Porto,
  • Novartis Investigative Site — L'Hospitalet de Llobregat, Barcelona
  • Novartis Investigative Site — Barcelona,
  • Novartis Investigative Site — Madrid,
  • Novartis Investigative Site — Madrid,

💰 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.
  • 💵 Compensation indicated: During screening, study participants will receive the investigational imaging agent \[68Ga\]Ga-NeoB.

Explore by condition: All Breast Cancer clinical trials

💡 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.
🏛️ View Official NIH Record ↗