A Feasibility Study of Ketorolac Treatment for Cachexia in Patients With Advanced Pancreatic Ductal Adenocarcinoma

Inclusion Criteria: 1. Diagnosis of advanced and refractory pancreatic ductal adenocarcinoma (PDAC) referred to Cedars-Sinai Medical Center (CSMC). 2. Cachexia defined as ≥5% weight loss in the presence of chronic illness, within any 6-month period prior to screening or as documented by the medical physician based on standard diagnosis of cachexia. 3. Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 2 or Karnofsky performance status \>50%. 4. Patient must have adequate renal function per below lab values: * Creatinine OR measured or calculated creatinine clearance (glomerular filtration rate can also be used in place of creatinine or CrCl) ≤1.5 × upper limit of normal OR ≥30 mL/min for participant with creatinine levels \>1.5 × institutional ULN. 5. Patient must have access to WiFi for the Smart Scale. Exclusion Criteria: 1. Uncontrolled intercurrent illness including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements in the opinion of the investigator. 2. Pregnancy, breastfeeding, or of childbearing potential and not willing to use adequate methods of contraception during the study. 3. Has any known allergies or hypersensitivity to the study drug or allergic reactions to surgical steel or elastomer/rubber. 4. Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the trial, interfere with the subject's participation for the full duration of the trial, or is not in the best interest of the subject to participate, in the opinion of the treating investigator. 5. Has known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the trial. 6. Concurrent use of any other NSAIDs while on study. 7. Active peptic ulcer disease, recent gastrointestinal bleeding or perforation, or a history of peptic ulcer disease or gastrointestinal bleeding. 8. Have suspected or confirmed cerebrovascular bleeding, tendency to bleed or bruise easily, incomplete hemostasis (how you body stops bleeding), and at high risk of bleeding.