Clinical Study of Radiotherapy Combined With Adebrelimab and NALIRIFOX for Conversion Therapy in Locally Advanced Pancreatic Cancer

This study intends to explore conversion therapy for locally advanced pancreatic cancer (LAPC). The intervention starts with modified stereotactic body radiation therapy (3-day regimen), followed by systemic therapy within 1-2 weeks after irradiation. Subsequently, the investigator will evaluate the resectability of the lesion. For subjects converted to resectable status, surgical resection will be performed, followed by postoperative adjuvant therapy. For subjects who remain unresectable but maintain stable disease, a second cycle of conversion therapy will be continued. If the lesion is converted to resectable, surgical resection will be performed followed by adjuvant therapy. If disease progression occurs, subsequent treatment will be carried out in accordance with the first-line treatment for advanced pancreatic cancer. For subjects who experience disease progression or distant metastasis, subsequent treatment will be administered by adjusting the chemotherapy regimen in accordance with the first-line standard regimen for advanced pancreatic cancer.