Advanced Pancreatic Adenocarcinoma

The goal of this clinical trial is to evaluate the safety and preliminary effectiveness of a new combination therapy in patients with advanced pancreatic cancer. The main questions it aims to answer are: 1. Is the combination of the peptide nanovaccine (ONVAX-01), an anti-PD-1 antibody, and chemotherapy safe and well-tolerated? 2. Does this combination treatment help shrink tumors or stop the progression of advanced pancreatic cancer? Participants will be asked to: 1. Receive doses of the peptide nanovaccine (ONVAX-01). 2. Receive intravenous infusions of an anti-PD-1 antibody and standard chemotherapy. 3. Undergo regular physical exams, blood tests, and imaging scans (such as CT or MRI) to monitor their health and the tumor's response to the treatment.

This research study is being done to help determine the safety and efficacy of gadolinium based nanoparticle, Activation and Guidance of Irradiation X (AGuIX), used in conjunction with MR-guided stereotactic body radiation therapy (SBRT) in the treatment of pancreatic cancer and lung tumors.

This phase Ib trial tests the safety, side effects, and best dose of leflunomide in combination with gemcitabine in treating patients with pancreatic cancer that may have spread from where it first started to nearby tissue, lymph nodes, or distant parts of the body (advanced) and cannot be removed by surgery (unresectable). Improving the effectiveness of gemcitabine without increasing side effects could lead to a greater impact for pancreatic cancer patients' survival and quality of life. Gemcitabine is commonly used as a first-line chemotherapy treatment for pancreatic cancer. Leflunomide is a drug approved for use against rheumatoid arthritis that is being looked at as a cancer treatment option. It has shown promising results when combined with gemcitabine. Giving gemcitabine in combination with leflunomide may be safe and effective in treating patients with advanced unresectable pancreatic cancer.

This study evaluates cancer-related weight and muscle mass loss, symptoms, and physical function (cachexia) in patients undergoing treatment for colorectal, lung, or pancreatic cancer that cannot be removed by surgery (unresectable) or is stage IV. Patients with these cancer types are at risk for developing cancer cachexia (CC), which is defined as weight loss, muscle loss, and fat loss due to cancer. CC has been associated with reduced physical performance, impaired quality of life, and poorer survival. Many studies that have evaluated treatments for cancer-related weight and muscle loss have aimed to treat all patients with weight loss exactly the same and, unfortunately, have not been successful. Like different cancer types, weight and muscle loss related to cancer may have different causes in different individuals and the best treatment strategy for this condition may not be a one-size-fits-all approach. Information gathered from this study may help researchers develop new diagnostic criteria for CC and design better treatments and clinical trials for cancer-related weight and muscle loss in the future to improve the quality of life in patients with advanced colorectal, lung, or pancreatic cancer.