Core Insights - Natera, Inc. and MEDSIR are collaborating on the MiRaDoR study, a phase II clinical trial focused on HR+/HER2- breast cancer, which accounts for approximately 70% of all breast cancer cases globally [1][2] - The study aims to evaluate the efficacy of various therapeutic approaches using Signatera Genome to monitor circulating-tumor DNA (ctDNA) levels as a predictive marker of treatment response [2][3] - Enrollment for the MiRaDoR trial is currently underway, with several sites in the U.K. active and further expansions expected in Europe by 2026 [3] Study Design and Objectives - The MiRaDoR study will enroll up to 60 patients who are Signatera-positive without evidence of disease recurrence, assigning them to one of four treatment arms [2][6] - The primary endpoint is the proportion of patients achieving a 90% decrease or clearance in baseline ctDNA after three months of treatment, with follow-up testing at 6, 9, and 12 months [2] - The trial will compare the effectiveness of specific therapy combinations against standard endocrine treatment [2] Company Background - Natera is recognized as a leader in cell-free DNA and precision medicine, focusing on oncology, women's health, and organ health, with a commitment to integrating personalized genetic testing into standard care [4] - MEDSIR specializes in oncology research and clinical trial management, operating in Spain and the U.S., and aims to promote independent research through strategic partnerships [8]