Celecoxib, Recombinant Interferon Alfa-2b, and Rintatolimod in Treating Patients with Colorectal Cancer Metastatic to the Liver

Inclusion Criteria

• Recurrent and/or metastatic unresectable colorectal cancer with hepatic metastases
• Hepatic metastases present which are amenable to biopsy
• Prior treatment with, contra-indication to or refusal of a fluoropyrimidine, irinotecan, oxaliplatin and an anti-EGFR targeted therapy (if RAS wild-type [wt]), as well as a PD-1 or PD-L1 targeted drug if high-frequency microsatellite instability (MSI-H)/mismatch repair protein deficiency (dMMR)
• No chemotherapy, radiotherapy, major surgery, or biologic therapy within 3 weeks of protocol treatment
• An Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2
• Have measurable disease per RECIST 1.1 criteria present
• Ability to swallow and retain oral medication
• Participants of child-bearing potential must agree to use adequate contraceptive methods (e.g., hormonal or barrier method of birth control; abstinence) prior to study entry; should a woman become pregnant or suspect she is pregnant while she or her partner is participating in this study, she should inform her treating physician immediately
• Platelet >= 75,000/uL
• Hemoglobin >= 9 g/dL
• Hematocrit >= 27%
• Absolute neutrophil count (ANC) >= 1500/uL
• Creatinine =< institutional upper limit of normal (ULN) OR creatinine clearance >= 50 mL/min for patients with creatinine levels greater than ULN
• Total bilirubin =< 1.5 x institutional ULN or for patients with known Gilbert’s syndrome total bilirubin =< 3 x ULN
• Aspartate aminotransferase (AST) (serum glutamic-oxaloacetic transaminase [SGOT]) and alanine aminotransferase (ALT) (serum glutamate pyruvate transaminase [SGPT]) =< 2.5 X institutional ULN
• Plasma amylase =< 1.5 X institutional ULN
• Lipase =< 1.5 X institutional ULN
• Participant or legal representative must understand the investigational nature of this study and sign an Independent Ethics Committee/Institutional Review Board approved written informed consent form prior to receiving any study related procedure

Exclusion Criteria

• Patients currently treated with systemic immunosuppressive agents, including steroids, are ineligible until 3 weeks after removal from immunosuppressive treatment
• Patients with active autoimmune disease requiring ongoing immunosuppressive therapy or, history of transplantation
• Patients who are pregnant or nursing; women of childbearing potential (WOCBP) will have to undergo a urine pregnancy test as part of screening
• Untreated central nervous system (CNS) metastases
• Cardiac risk factors including: * Patients experiencing cardiac event(s) (acute coronary syndrome, myocardial infarction, or ischemia) within 3 months of signing consent * Patients with a New York Heart Association classification of III or IV
• History of upper gastrointestinal ulceration, upper gastrointestinal bleeding, or upper gastrointestinal perforation within the past 3 years; patients with ulceration, bleeding or perforation in the lower bowel are not excluded
• Prior allergic reaction or hypersensitivity to celecoxib, non-steroidal anti-inflammatory drugs (NSAIDs), or any study agents which would prevent completion of protocol-therapy
• Patients are ineligible if they plan on regular use of NSAIDs at any dose more than 2 times per week (on average) or aspirin at more than 325 mg at least three times per week, on average; low-dose aspirin not exceeding 100 mg/day is permitted; patients who agree to stop regular NSAIDs or higher dose aspirin are eligible and no wash out period is required
• Received an investigational agent within 30 days prior to enrollment
• Unwilling or unable to follow protocol requirements
• Patients with known serious mood disorders
• Any additional condition which in the investigator’s opinion deems the participant an unsuitable candidate to receive the study drugs