Estrogen-receptor positive breast cancer

Researchers are studying giredestrant, an experimental daily pill, in people with estrogen receptor-positive, HER2-negative early breast cancer. The trial enrolls about 1,500 participants, including some who switch to giredestrant after other treatments. It tracks how many people…

This study tests a new drug, prifetrastat, combined with fulvestrant for people with advanced HR+/HER2- breast cancer that has stopped responding to standard hormone therapy and CDK4/6 inhibitors. About 51 participants will receive the combination to see if it can shrink tumors o…

This trial investigates whether adding neratinib, a drug that blocks HER2/3/4 proteins, to standard hormone therapy can improve disease control in people with metastatic ER+/HER2- breast cancer that has stopped responding to first-line endocrine therapy. Participants will receive…

This study tests a program to help women with ER-positive breast cancer in Rwanda take their daily hormone therapy as prescribed. The program includes education, reminders, and behavioral support. Researchers will measure how well participants stick with their medication and how …

This study tests a new drug combination (SHR-A1811 plus pertuzumab) given before surgery to women with early or locally advanced HR-positive, HER2-positive breast cancer. The goal is to see if this treatment can eliminate all cancer cells in the breast and lymph nodes by the time…

This study tests a new drug called QLC1401, taken as a tablet, combined with either CDK4/6 inhibitors or mTOR inhibitors for people with ER+/HER2- advanced breast cancer. The trial has two parts: first, finding the safest dose, then checking how well it works. About 96 participan…

This study tests whether low doses of two hormone-blocking drugs, exemestane and tamoxifen, can help prevent breast cancer in postmenopausal women at high risk. About 140 women will take one of the two drugs for a year, and researchers will measure side effects and quality of lif…

This study tests whether a daily 50mg dose of sildenafil (Viagra) can prevent or reduce the fatigue and cognitive problems (brain fog) that often come with cancer treatment. The trial will enroll 30 women with ER+/HER2- breast cancer, aged 30-50, and track their symptoms using qu…

This phase 3 trial tests whether CBD oil can reduce joint pain caused by aromatase inhibitors, a common hormone therapy for early breast cancer. About 130 participants will receive either CBD or a placebo for 12 weeks, then switch treatments. The study measures pain interference …

This study will follow 81 people with early-stage, hormone-positive breast cancer who are at high risk of the cancer coming back. Researchers want to see how often patients take their prescribed CDK4/6 inhibitor pills (abemaciclib or ribociclib) alongside standard hormone therapy…