Brest

Researchers are evaluating the effectiveness, safety, how the body processes, and immune response to BCD-236 combined with chemotherapy in women with relapsed or metastatic triple negative breast cancer TNBC who have received previous treatments. This is a Phase 2 study that compares BCD-236 plus chemotherapy versus chemotherapy alone in patients whose cancer has returned or progressed after earlier therapies. Participants will be randomly assigned to one of two groups one receiving BCD-236 by intravenous infusion plus chemotherapy chosen by the investigator, and the other receiving chemotherapy alone. Treatment continues until the cancer worsens, side effects become intolerable, or the study ends. During the study, participants will undergo regular assessments including tumor measurements and health evaluations to monitor response and side effects. The main outcome measured is the overall response rate at 24 weeks, with secondary outcomes including progression-free survival, overall survival, disease control rate, time to response, and duration of response assessed at various times up to 102 weeks. Participants will be monitored closely throughout their treatment and follow-up periods.