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Neu Direction: Testing the Efficacy of Adding HER Inhibition to Standard of Care in Metastatic MLH1-low Endocrine-resistant ER+/HER2- Breast Cancer
Sponsor: University of California, San Diego
Summary
The goal of this clinical trial is to learn if neratinib, an FDA-approved oral pan-HER2/3/4 inhibitor, improves disease control for participants with metastatic endocrine-resistant ER+/HER2-negative breast cancer. Neratinib is already approved for the treatment of HER2-postive breast cancers. The study will also learn about the safety of adding this drug to standard of care treatments. The main questions it aims to answer are: 1. Does adding neratinib to standard of care systemic therapy improve disease control for patients with metastatic hormone-driven breast cancer that is resistant to endocrine therapy? 2. What side effects do participants have when adding neratinib to standard of care therapy? Researchers will compare standard of care endocrine therapy regimens with and without neratinib to see if neratinib improves control of treatment-resistant metastatic breast cancer that has continued to progress while eon first line endocrine therapy. Participants will: 1. Take standard of care endocrine therapy for metastatic endocrine-resistant breast cancer as determined by their medical oncologist or standard of care therapy with neratinib daily 2. Visit the clinic every 3 months for checkups, tests and imaging studies
Official title: Neu Direction: A Single Center Phase II Randomized Clinical Trial to Assess the Efficacy of Adding HER Inhibition to Standard of Care in Patients With Metastatic MLH1-low Endocrine-resistant ER+/HER2- Breast Cancer
Key Details
Gender
FEMALE
Age Range
18 Years - Any
Study Type
INTERVENTIONAL
Enrollment
150
Start Date
2027-07
Completion Date
2035-06
Last Updated
2026-07-27
Healthy Volunteers
No
Conditions
Interventions
Neratinib + endocrine therapy
Neratinib 120mg daily for 1 week, 160mg daily for 1 week and then 240mg daily thereafter
Endocrine therapy may include one of the following therapies: letrozole, anastrozole, exemestane, tamoxifen or fulvestrant
Endocrine therapy with out without CDK4/6 inhibitor
CDK4/6 + Endocrine therapy
Endocrine therapy with or without CDK 4/6 inhibitor
Locations (1)
UC San Diego Health Moores Cancer Center
La Jolla, California, United States