CtDNA-guided Maintenance Therapy in Pancreatic Cancer

Inclusion criteria

• Age ≥18 years, male or female
• Histologically or cytologically confirmed primary diagnosis of pancreatic ductal adenocarcinoma (PDAC)
• No evidence of distant metastasis (M0)
• Underwent R0 radical resection within 3 months prior to enrollment
• ECOG performance status of 0-1
• Life expectancy ≥3 months
• Patient or legal guardian is able to understand the study requirements and willing to provide written informed consent

Exclusion criteria

• Prior history of radiotherapy, chemotherapy or surgical treatment for pancreatic cancer
• Concurrent severe organ dysfunction or hematologic disorders
• Tumor involvement of celiac axis or superior mesenteric artery, locally advanced disease, or presence of distant metastases
• Poor general condition deemed unable to tolerate chemotherapy
• History of other malignancies within past 5 years (except adequately treated carcinoma in situ of cervix or basal cell carcinoma of skin)
• Any severe or uncontrolled systemic disease that may affect risk/benefit assessment, including but not limited to: uncontrolled hypertension, active hepatitis B or C infection, HIV infection
• Patient or guardian unable to comprehend study objectives and requirements
• Any other condition that in the investigator's judgment would make the patient unsuitable for study participation