Clinical trials

This is a national clinical trial (Spain), conducted in approximately 5 sites, where patients who agree to participate will be included in one of two exercise program groups: the experimental group (a combined resistance and aerobic exercise program) and the control group. The study will begin with a pilot phase involving approximately 74 patients. Approximately 37 patients in the experimental group will follow a 6-month training program consisting of exercise sessions three alternate days per week (combining resistance and aerobic exercise). Approximately 37 patients in the control group will receive standard medical care. These patients will be provided with international exercise guidelines for cancer patients. Patients will continue with their assigned physical activity intervention until the maximum number of months for the intervention, unacceptable toxicity, discontinuation of hormone therapy, or withdrawal of consent-whichever occurs first.

The goal of this observational study is to explore the utility of analytical techniques that enable the study of small amounts of tumor-derived material circulating in the blood, such as fragments of circulating tumor DNA (also known as ctDNA), cells, or other particles. This type of sample is generally referred to as a liquid biopsy, and its analysis is a minimally invasive test, as it only requires the collection of blood samples. The study includes women and men with early-stage breast cancer (EBC) who are about to start neoadjuvant treatment (treatment given before surgery). The main questions it aims to answer are: * Can liquid biopsy analyses (ctDNA) provide additional information about the type of tumor before treatment starts? * Can these analyses help to detect early whether the tumor is responding to treatment? * Can these tests identify if any cancer remains after neoadjuvant treatment or after surgery? * Is this information related to the risk of the cancer coming back? * Can these analyses, when performed during follow-up, help detect cancer recurrence earlier? Participants will: * Continue receiving standard medical care for their breast cancer, including neoadjuvant therapy and surgery. * Provide blood samples at different time points during treatment and follow-up. * Provide residual tumor samples from the routine clinical care.

This study is a prospective, multicenter non-interventional cohort study designed to develop a registry in unresectable locally advanced or metastatic disease.

This is a multicenter, cohorts study to collect information from patients diagnosed with early-stage invasive breast cancer who have been previously included in a neoadjuvant or adjuvant clinical trial of the GEICAM group. Patients will be included in this study from the moment of completion of the follow-up of the studies of origin and will be followed for approximately 30 years