This study is a multi-center, observational study aiming at developing a machine learning-based early detection model using prospectively collected liquid biopsy samples from clinically-annotated individuals.

Peripheral blood samples from participants with new diagnosis of pancreatic cancers will be collected to characterize the cancer-specific circulating signals by sequencing cell free DNA. A noninvasive test integrating machine learning algorithm will be trained and validated through a two-stage approach in recruited well-classified individuals, along with non-cancers without clinical diagnosis of cancer after routine medical screening. The performance of liquid biospy assays discovering cancer from non-cancer will be evaluated in participants with benign disease as well as average risk individuals.

Cancer Arm

Inclusion Criteria:

• 40-75 years old
• Clinically and/or pathologically diagnosed pancreatic cancer
• No prior or undergoing any systemic or local antitumor therapy, including but not limited to surgical resection, radiochemotherapy, endocrinotherapy, targeted therapy, immunotherapy, interventional therapy, etc.
• Able to provide a written informed consent and willing to comply with all part of the protocol procedures.

Exclusion Criteria:

• Pregnancy or lactating women
• Known prior or current diagnosis of other types of malignancies comorbidities
• Severe acute infection (e.g. severe or critical COVID-19, sepsis, etc.) or febrile illness (body temperature of ≥ 38.0 °C) within 14 days prior to blood draw
• Recipients of organ transplant or prior bone marrow transplant or stem cell transplant
• Recipients of blood transfusion within 30 days prior to study blood draw
• Recipients of therapy in past 14 days prior to blood draw, including oral or IV antibiotics, glucocorticoid, azacitidine, decitabine, procainamine, hydrazine, arsenic trioxide
• Other conditions that the investigators considered are not suitable for the enrollment

Benign Disease Arm

Inclusion Criteria:

• 40-75 years old
• Clinically and/or pathologically diagnosed pancreatic non-malignant disease (pancreatic intraepithelial neoplasia, pancreatic cyst and chronic pancreatitis)
• No prior or undergoing any systemic or local antitumor therapy, including but not limited to surgical resection, radiochemotherapy, endocrinotherapy, targeted therapy, immunotherapy, interventional therapy, etc.
• Able to provide a written informed consent and willing to comply with all part of the protocol procedures

Exclusion Criteria:

• Pregnancy or lactating women
• Known prior or current diagnosis of other types of malignancies comorbidities
• Severe acute infection (e.g. severe or critical COVID-19, sepsis, etc.) or febrile illness (body temperature of ≥ 38.0 °C) within 14 days prior to blood draw
• Recipients of organ transplant or prior bone marrow transplant or stem cell transplant
• Recipients of blood transfusion within 30 days prior to study blood draw
• Recipients of therapy in past 14 days prior to blood draw, including oral or IV antibiotics, glucocorticoid, azacitidine, decitabine, procainamine, hydrazine, arsenic trioxide
• Other conditions that the investigators considered are not suitable for the enrollment

Patients diagnosed pancreatic cancer or pancreatic non-malignant disease