A Liquid Biopsy for Pancreatic Cancer Early-detection and Disease Monitoring

Inclusion Criteria: * Adult men or women aged ≥18 years at the time of plasma sample collection. * Classification as at increased risk for pancreatic ductal adenocarcinoma (PDAC) due to familial pancreatic cancer or hereditary pancreatic cancer syndrome * Classification as at increased risk for pancreatic ductal adenocarcinoma (PDAC) due to the presence of one (or more) mucinous pancreatic cystic lesion(s). * Availability of stored plasma samples collected as part of routine clinical care or surveillance and archived in the institutional biobank. * Availability of relevant clinical and demographic data in institutional medical records sufficient to address study objectives. * Prior provision of informed consent for biobanking and research use of biological samples and data Exclusion Criteria: * Absence or insufficient quality/quantity of stored plasma samples for laboratory analysis. * Lack of clinical data required for cohort classification and/or outcome assessment. * History of pancreatic surgery or interventional procedures prior to plasma sample collection. * Concurrent active malignancy at the time of sample collection, other than non-melanoma skin cancer. * Samples collected outside routine clinical care or not compliant with institutional biobanking and data protection policies.