Camrelizumab, Pirfenidone, and Chemotherapy in the Treatment of Advanced Triple-Negative Breast Cancer

"Treatment Regimen:~Camrelizumab: 200 mg intravenous (IV) every 3 weeks (q3w). Pirfenidone: 200 mg three times daily (tid), escalated to 600 mg tid based on tolerability.~Chemotherapy: Investigator's choice of standard regimens (e.g., paclitaxel 175 mg/m² IV q3w or capecitabine 1000 mg/m² orally bid on days 1-14 of a 21-day cycle)."