Abdominal Cancer

This research aims to understand how patients with cancer respond to COVID-19 vaccination by studying the levels of protective antibodies over time. The focus is on individuals with solid organ malignancies receiving various anti-cancer treatments such as chemotherapy, targeted therapy, and immunotherapy, as well as those who have been disease-free for at least six months. Since cancer patients were excluded from initial vaccine trials, this study seeks to fill knowledge gaps about vaccine safety and effectiveness in this group. Participants include cancer patients who are either undergoing active treatment or are disease-free for six months or more. They are grouped based on their treatment type: chemotherapy, targeted therapy, immunotherapy, or disease-free status. The study involves monitoring antibody trends related to COVID-19 infection and vaccination at multiple time points over a 12-month period. During the study, researchers will collect blood samples to measure neutralizing and spike antibody levels every three months for up to one year. Participants will be followed to track their immune response depending on their cancer treatment and biological aging status. The study will also assess how antibody levels change over time and correlate with different treatments and patient characteristics. Safety and consent are carefully monitored throughout the trial.

Researchers are evaluating the safety and effectiveness of a new molecular probe called 18F-FAPI-YQ104, which targets fibroblast activation protein (FAP), for early tumor diagnosis. This observational study focuses on patients with lung cancer, pancreatic cancer, neuroendocrine tumors, and thyroid cancer. The goal is to verify how well this probe works in detecting tumors during clinical use. Participants will receive an intravenous injection of the 18F-FAPI-YQ104 probe followed by a PET-CT examination to capture detailed images of tumor lesions. The study will observe the probe's uptake in tumor sites, measured by SUVmax values 60 minutes after administration. No additional treatment is given; instead, the study monitors the imaging results to assess the probe's diagnostic potential. During the study, participants will undergo PET-CT scans and other imaging tests such as CT or MRI. Researchers will evaluate the images to measure tumor activity and probe uptake. Safety assessments include checking kidney and liver function, blood counts, and monitoring for allergic reactions. The study will last from April 2025 to March 2026 and includes adults aged 18 to 75 years who have confirmed tumors and meet health criteria.

Researchers are evaluating the potential usefulness of 18F-FAPI-04 positron emission tomography/computed tomography (PET/CT) and positron emission tomography/magnetic resonance imaging (PET/MR) for diagnosing primary and metastatic cancer lesions, detecting recurrence, and assessing pathological response across various cancer types. The study is observational and aims to assess how well these imaging methods perform compared to standard diagnosis using histopathology and follow-up. Participants with different types of cancer undergo imaging with 18F-FAPI-04 PET/CT and PET/MR scans. The tracer 18F-FAPI-04 is injected into patients before the scans. Tumor uptake is measured by maximum standard uptake value (SUVmax) and tumor to background ratio (TBR). The imaging results are compared using sensitivity, specificity, positive predictive value, negative predictive value, and accuracy to evaluate diagnostic performance. During the study, participants are assessed through these imaging procedures to monitor tumor presence, recurrence, or response to treatment. The primary outcome is the diagnostic performance evaluated over one year. The study includes participants aged 18 to 90 years and involves informed consent and ethical approval. The total duration and follow-up details are based on imaging and clinical evaluations to confirm findings.

Researchers are evaluating the diagnostic value of a new protein-specific probe called 18F-T2 in PET/CT imaging for people with solid tumors that are likely to express high levels of CAIX protein. The study will also assess how safe and tolerable the 18F-T2 injection is, as well as measure its radiation dosage. This research is important to better understand how well 18F-T2 can detect these tumors compared to standard imaging techniques. Participants with tumors suspected to express high levels of CAIX will receive an intravenous injection of 18F-T2. About an hour after the injection, PET/CT imaging will be performed to capture detailed images of the tumors. Within one week, participants will also undergo a whole-body PET/CT scan using 18F-FDG, a commonly used imaging agent, to allow comparison between the two imaging methods. During the study, participants will be monitored for any adverse events within 24 hours after the 18F-T2 injection to evaluate safety and tolerability. Researchers will measure the diagnostic sensitivity and specificity of 18F-T2 PET/CT for detecting CAIX-positive tumors. They will also assess uptake values in tumors on both 18F-T2 and 18F-FDG scans, analyze the correlation between 18F-T2 uptake and CAIX expression in tissue samples, and evaluate radiation dosimetry. The study will continue until one month after completion for outcome assessments.

Researchers are studying how the duration of oxaliplatin infusion affects nerve damage in patients with gastrointestinal cancers. This phase II trial compares giving oxaliplatin over 2 hours versus 6 hours to see if a longer infusion can reduce or delay nerve damage, which may allow patients to stay on standard chemotherapy doses longer without delays. The European Organization for Research and Treatment of Cancer's patient-reported neuropathy scale (CIPN-20) is used to measure nerve damage severity. Participants are randomly assigned to one of two groups: one receives oxaliplatin and leucovorin intravenously over 2 hours along with fluorouracil given in two doses (a quick low dose and a continuous higher dose) on day 1; the other receives oxaliplatin over 6 hours with leucovorin and fluorouracil as in the first group. Treatments are repeated every 14 days unless disease progresses or side effects are unacceptable. After treatment, patients are followed up at 1, 3, 6, 12, and 18 months. Throughout the study, patients undergo evaluations including measurements of nerve damage using the CIPN-20 scale, pharmacokinetic tests to assess drug concentration and clearance, tumor size monitoring, and records of therapy duration, dose adjustments, and treatment delays. These assessments help researchers understand how infusion time affects nerve damage severity and overall treatment delivery. The total participation duration includes the treatment period and up to 18 months of follow-up.

Researchers are evaluating the imaging agent 64Cu-LNTH-1363S in patients with sarcomas or gastrointestinal tract (GIT) cancers to assess its safety, determine the best imaging dose and timing, and compare the imaging results with fibroblast activation protein (FAP) expression in tumor samples. This Phase 1/2a open-label study is divided into two parts and aims to better understand how this radiolabeled agent behaves in the body and how well it highlights tumors that express FAP. In Part 1, six patients with metastatic sarcomas will receive a fixed dose of 64Cu-LNTH-1363S to evaluate its distribution, radiation dose, and optimal imaging window during a one-day intervention, followed by a safety follow-up. In Part 2, approximately 20 patients with non-metastatic, operable sarcomas or GIT cancers scheduled for surgery will receive the optimal dose determined in Part 1 to study the correlation between imaging results and tissue FAP expression. Both parts include detailed cardiac monitoring to assess any changes in heart activity related to the agent. Participants will undergo screening before receiving the imaging agent, followed by serial PET/CT scans at multiple timepoints on the intervention day to measure biodistribution and image quality. Tissue samples collected during surgery will be analyzed to compare with imaging findings. Safety and tolerability will be monitored through follow-up visits, ECGs, and phone contact. The total study duration varies from about three weeks for Part 1 to up to 11 weeks for Part 2, including surgery and post-surgery sample collection.

This research aims to evaluate the use of a new imaging agent called 68Ga-ICAM-1pep in cancer patients undergoing radiotherapy. Researchers want to see if this agent can help predict the abscopal effect, a phenomenon where radiotherapy affects tumors outside the treated area. The study focuses on patients with various cancers such as lung, esophagus, and cervical cancer, and it is an early-phase clinical trial investigating this new approach. Participants will receive a single intravenous dose of 2.96 MBq/kg of 68Ga-ICAM-1pep. PET/CT scans will be performed about one hour after the injection. There are two groups: patients who have not yet received radiotherapy and those who have completed radiotherapy. Imaging will be done before and during radiotherapy to observe tumor responses. During the study, participants will undergo PET/CT scans covering from the head to the upper thigh. Researchers will measure the standardized uptake values (SUVs) of 68Ga-ICAM-1pep before treatment and monitor changes during radiotherapy, about 3 to 4 weeks after it begins. The study includes monitoring for compliance with imaging procedures and overall safety until the study ends in late 2025.

Researchers are evaluating the uptake characteristics of 68Ga-NYM096 PET/CT imaging in various types of tumors, including both primary and metastatic cancer lesions. This prospective, single-center study aims to provide important insights into how different tumors take up this imaging tracer, helping to identify the most promising uses of 68Ga-NYM096 PET/CT for future cancer diagnosis and treatment assessment. Participants will receive a single intravenous dose of 68Ga-NYM096, with the amount adjusted based on body weight. After injection, a whole-body PET/CT scan will be performed approximately 45 to 75 minutes later to capture detailed images of tumor uptake. The study focuses on quantitative analysis of tracer uptake in cancer lesions, measuring factors such as lesion number, maximum standardized uptake value (SUVmax), and tumor-to-background ratio. During the study, participants will undergo the PET/CT imaging procedure and provide informed consent. Researchers will analyze the images to assess tracer uptake characteristics in confirmed tumors. Safety and compliance with study procedures will be monitored. The main outcome is the quantitative assessment of tumor lesions on the 68Ga-NYM096 PET/CT scan, evaluated from study completion to one month after. The study plans to enroll 120 patients with confirmed cancer diagnoses and will follow ethical guidelines throughout the research.

Researchers are studying the effects of a drug called 177Lu-PSMA-617 in patients who have metastatic hepatocellular carcinoma (HCC), a type of liver cancer that is often advanced and cannot be surgically removed. This study focuses on patients whose tumors show positive uptake of prostate specific membrane antigen (PSMA), a protein found in tumor blood vessels and targeted for treatment. The trial aims to explore the potential of PSMA-targeted therapy in HCC, a disease with limited biomarker-directed options despite recent improvements from immunotherapy. Participants will receive intravenous infusions of 177Lu-PSMA-617 at a dose of 7.4 GBq (200 mCi) every six weeks. The treatment uses a radioligand approach, where the drug delivers targeted radiation to PSMA-positive tumor cells identified through special PET imaging. The study includes one main treatment arm and will monitor treatment effects and safety over time, with dosing repeated at six-week intervals. During the study, participants will undergo PSMA PET scans to confirm tumor uptake, and researchers will track side effects and treatment responses through imaging and laboratory tests. Outcomes measured include the percentage of participants with PSMA-positive lesions, safety and tolerability of the drug, progression-free survival, overall survival, and tumor response rates. The study will follow participants for several months to assess these outcomes and monitor long-term safety.

Researchers are studying a new type of scan called FAPI-PET/CT to see how well it detects metastases in patients with advanced gastric cancer. The study aims to find out if this scan can better identify cancer spread, leading to changes in treatment plans such as avoiding unnecessary surgeries or shifting to comfort-focused care. It also evaluates whether the scan causes less burden for patients compared to current methods. Participants will receive the standard care for gastric cancer and undergo one additional FAPI-PET/CT scan, where a small amount of [18F]-FAPI-74 is given intravenously about 60 minutes before a PET/CT scan lasting around 20 minutes. The results from this scan will help doctors decide on further tests or surgery needed. The study monitors changes in diagnosis and treatment decisions based on the scan. During the study, participants will complete questionnaires taking about 4 hours total and spend approximately 2 hours for the extra scan. Researchers will measure outcomes such as changes in treatment intent, diagnostic work-up, scan accuracy, incidental findings, patient burden, quality of life, and safety over about one year. Follow-up includes quality of life assessments and cost evaluations at multiple time points after staging.