Clinical Research Directory

18F-Fibroblast Activation Protein Inhibitor ([18F]FAPI-74) PET Imaging for Cancer Detection

Background: Fibroblast-activation protein (FAP) is an enzyme that appears in high numbers in cancer-associated fibroblasts of certain cancer types. \[18F\]FAPI-74 is a new PET (positron emission tomography) tracer, a substance that is injected into a person s body before an imaging scan. Researchers believe that \[18F\]FAPI-74 PET imaging may be able to visualize cancer more effectively than the approved tracers. If so, the new tracer would make it easier to find FAP-positive tumors in the body. Objective: To see if \[18F\]FAPI-74 PET scan is as good or better than other imaging methods for detecting certain cancers. Eligibility: People aged 18 years or older with one of these cancer types: pancreatic ductal adenocarcinoma (PDAC), cholangiocarcinoma, hepatocellular carcinoma (HCC), gastric cancer, bladder cancer, ovarian cancer, pheochromocytoma/paraganglioma (PPGL), small cell lung cancer (SCLC) or extrapulmonary neuroendocrine cancer (EP-NEC), mesothelioma or sarcoma. Participants must be scheduled or intended to receive treatment for cancer. Design: Participants will have 2 baseline scans: an \[18F\]FAPI-74, and the approved tracer \[18F\]-FDG. The \[18F\]FAPI-74 will be infused through a needle inserted into a vein. About 1 hour later, the participant will undergo imaging. Within 1 week, participants will undergo the same scanning procedures with the approved tracer. If the baseline scan with \[18F\]FAPI-74 shows the tumor(s), scans with this tracer will be repeated when their regular treatment regimen calls for scans again. If the scan with the regular FDG also show tumors, this scan will be repeated within the same week as the repeated \[18F\]FAPI-74 scan. If \[18F\]-FAPi PET scan shows no tumor(s), scans will not be repeated. If the participant's cancer progresses within 2 years, scans may be repeated. Follow-up calls will continue for 2 years.

Al18F-NOTA-LM3 PET/CT in Patients With Pheochromocytoma and Paraganglioma

The aim of this study is to evaluate the diagnostic performance of Al18F-NOTA-LM3 PET/CT and compare it with 68Ga-DOTATATE PET/CT in patients with pheochromocytoma/paraganglioma (PPGL).

Comparative Study of Perioperative Cardiac Injury in Patients With Functional Adrenal Tumors

The main goal of this study is to follow patients with functional adrenal tumors during the time before and after their surgery. The main questions it aims to answer are: * What heart and blood pressure changes do patients with different types of adrenal tumors have before surgery? * What factors affect how the heart and blood pressure recover after surgery? * Do the heart and blood pressure conditions before surgery influence recovery and the risk of heart or brain problems after surgery? Patients will have heart ultrasound checks and health monitoring before and after surgery. The results will help doctors choose the right medicines before surgery, better understand possible risks during the operation, and make safer treatment plans for patients with functional adrenal tumors.