U.S., Sept. 23 -- ClinicalTrials.gov registry received information related to the study (NCT07833501) titled 'Estradiol Levels According to Body Mass Index in Premenopausal Patients With Breast Cancer' on Sept. 16.

Brief Summary: his prospective observational study will evaluate whether body mass index (BMI) is associated with serum estradiol levels in premenopausal women with hormone receptor-positive breast cancer. Participants will already be receiving standard adjuvant treatment with an aromatase inhibitor and pharmacologic ovarian suppression as part of their routine clinical care. The study will not assign or modify cancer treatment.

Approximately 172 participants will be enrolled at multiple study sites in Brazil. They will be clas...