Randomized Trial Comparing Survival of Patients With Metastatic Hormone Receptor Positive HER2 Negative Breast Cancer Using Serum Tumor Marker Monitoring Versus Usual Care

What this Trial Is About

Researchers are evaluating how well serum tumor marker directed disease monitoring STMDDM works compared to usual care in patients with hormone receptor positive, HER2-negative metastatic breast cancer. This trial aims to see if monitoring with serum tumor markers can provide similar overall survival outcomes to the standard approach, which involves regular imaging scans. The study also looks at healthcare costs, patient anxiety, and quality of life related to these monitoring methods. Participants are randomly assigned to one of two groups. In the usual care group, patients receive imaging studies at least every 12 weeks and may have serum tumor marker tests as determined by their doctor. In the STMDDM group, patients have blood tests for specific tumor markers every 4 to 8 weeks, and imaging scans are only done if these markers indicate a possible progression of disease. Both groups continue their monitoring for up to 312 weeks unless the disease progresses. During the study, participants undergo regular assessments including blood tests for tumor markers, imaging scans as needed, and questionnaires about anxiety and quality of life. Researchers track overall survival for up to 312 weeks and compare healthcare costs and patient-reported outcomes for up to 48 to 102 weeks. The study also collects data on how often and by what methods disease monitoring is performed, along with patient and physician preferences related to monitoring.

S1703 Serum Tumor Marker Directed Disease Monitoring in Patients With Hormone Receptor Positive Her2 Negative Metastatic Breast Cancer