Hereditary hyperparathyroidism

This study tests a new daily pill called YCT-529 for male contraception. It involves 88 healthy men who have decided not to have children. The pill is taken for 28, 90, or 180 days to check its safety, side effects, and how well it works. This is an early step toward giving men a…

This study is testing a procedure called EUS-RFA, which uses a thin needle guided by ultrasound to heat and destroy small tumors in the pancreas or adrenal glands. About 138 participants will receive this treatment as part of their standard care and be followed for up to 5 years.…

This study tests whether a new type of PET scan using a radioactive tracer called 18F-FCH can more accurately locate overactive parathyroid glands or tumors before surgery. About 193 adults scheduled for parathyroid removal will receive both the new scans and a standard 4D-CT sca…

This study looks at whether a blood test for a protein called hPG80 can help find neuroendocrine tumors (NETs) earlier in people with MEN1, a genetic condition that raises tumor risk. About 297 participants with MEN1 will give blood samples, which will be compared to standard ima…

This study tests a drug called fezolinetant to see if it can reduce hot flashes in men with prostate cancer who are on hormone therapy (androgen deprivation therapy). About 60 men will take either the drug or a placebo daily for 4 weeks. Researchers will track hot flash frequency…

This study looks at whether a fermented whey protein and fiber supplement can improve digestive comfort in recreational athletes. Researchers will enroll 114 participants, some with and some without stomach complaints, and compare the supplement to a placebo. The goal is to see i…

This study follows up to 3,000 people who have, are at risk for, or are related to someone with a parathyroid disorder. Researchers will collect medical records, questionnaires, and samples like blood and saliva to learn what causes these conditions and how they change over time.…

This study looks at how cancer treatment impacts the work life and overall well-being of 400 men, ages 21 to 70, who have been newly diagnosed with solid tumors like colorectal, lung, or head and neck cancer. Participants will fill out questionnaires about their work hours, finan…

This study aims to discover new genes that may cause certain cancers to run in families. Researchers will collect blood samples and health information from 1,500 people in families where multiple members have had cancer, especially childhood cancers. The goal is to build a regist…

This study follows people with von Hippel-Lindau (VHL) disease who have pancreatic tumors or cysts. The goal is to learn how these growths change over time and to see if a special type of scan (68-Gallium DOTATATE PET/CT) can find them better. Participants will have regular check…