A Study of Blood Based Biomarkers for Pancreas Adenocarcinoma

"If clinically safe, up to approximately 50ml of blood will be drawn, not to exceed the following criteria:~Patients and controls weighing 50kg or more~* For draw amounts up to 50mL, there is no required hemoglobin threshold.~* For amounts exceeding 50mL, patients who meet standard blood banking criteria (e.g., hemoglobin values within normal limits and minimum weight of 50kg) may give as much as a full unit of blood (500mL) at one time or in divided fractions over a 56 day/eight week period.~Patients and controls weighing \< 50kg~* For patients whose hemoglobin is below normal limits but at least 7.0 gm/dL, no more than a total of 50 ml of blood or 5 ml/kg, whichever is less, may be collected per 56 day/eight week period, but no more than approximately 2 ml/kg of blood at any one time."

Tumor tissue will be obtained by already planned biopsy, either at Memorial Sloan Kettering Cancer Center or elsewhere

Cyst fluid will be obtained by already planned biopsy, either at Memorial Sloan Kettering Cancer Center or elsewhere