Hypogonadism

This study tests if a new growth hormone medicine (somapacitan) given once a week works as well as the standard daily growth hormone (Norditropin) for children who are very short due to being born small, or having Turner syndrome, Noonan syndrome, or unknown causes. About 412 chi…

This early-phase trial is testing whether giving testosterone replacement therapy to men with low testosterone before and after major urologic surgery is safe and might improve recovery. Researchers will track quality of life, frailty, complications, hospital stay length, and rea…

This study follows about 200 people with Prader-Willi syndrome who are taking or starting VYKAT XR. Researchers will track side effects and how the drug affects their health over time. The goal is to gather more safety information, not to test if the drug cures the condition.

This study tests a new long-acting growth hormone (lonapegsomatropin) given once a week, compared to the standard daily growth hormone shot, in 48 prepubertal children with Turner syndrome who have not had growth hormone before. The goal is to see if the weekly shot is safe and h…

This study follows 200 children in Japan with growth hormone deficiency who are taking Sogroya® (somapacitan) as part of their normal care. Researchers will monitor side effects and growth over 1 to 3 years to see how safe and effective the drug is in real-world use. Participants…

This study tests two treatments—isotretinoin (an acne medication) and hCG (a hormone)—to see if they can help men with low or no sperm count produce moving sperm. About 100 men aged 19 to 50 will take one of the drugs for three months. The goal is to find new options for male inf…

This study offers girls from birth to age 17 the chance to freeze their ovarian tissue before medical treatments that could harm their fertility, such as chemotherapy or radiation. The tissue is removed surgically and stored. Later, if they want to have children, the tissue can b…

This phase 3 trial is testing the safety of pitolisant in 150 people with Prader-Willi syndrome who have already taken the drug in a previous study. Participants will receive pitolisant tablets and be monitored for side effects. The goal is to see if pitolisant is safe for long-t…

This phase 2 trial tests setmelanotide (Imcivree), a daily injection, in 18 people aged 6 to 65 with Prader-Willi syndrome who have obesity. The study will check if the drug is safe and helps reduce body weight and hunger over 52 weeks.

This phase 3 trial is testing a drug called setmelanotide in people with obesity linked to certain gene variants (POMC, PCSK1, LEPR, NCOA1, or SH2B1). About 296 participants, aged 6 to 65, will receive either the drug or a placebo to see if it helps reduce body weight. The study …

This study tracks the safety and effectiveness of Ngenla, a growth hormone injection, in over 500 children aged 3 and older with growth hormone deficiency in Korea. Researchers will monitor side effects and growth changes over 6 years during routine medical care. The treatment he…

This study looks at whether giving testosterone to men with low testosterone and kidney failure can help them recover better after a kidney transplant. About 50 men will receive testosterone before and after their transplant, and their safety and recovery will be compared to a si…

This study tests the long-term safety of a nasal spray called carbetocin for people with Prader-Willi syndrome who experience severe, constant hunger (hyperphagia). About 160 participants who completed a previous study will receive the spray three times daily. The goal is to see …

This study tests a new growth hormone medicine called somapacitan, given once a week, in 47 children who are very short due to being born small for gestational age, or having Turner syndrome, Noonan syndrome, or idiopathic short stature. The main goal is to see if it is safe and …

This Phase 4 study is checking whether JATENZO, a testosterone replacement drug, affects adrenal gland function in men with low testosterone (hypogonadism). About 110 men aged 18-65 will take JATENZO for 12 months. Researchers will measure cortisol levels after a stimulation test…

This study offers voluntary screening for newborns in North Carolina to detect a wide range of rare health conditions early. Using a small blood sample already collected at birth, the program tests for dozens of disorders, including spinal muscular atrophy, cystic fibrosis, and m…

This phase 3 study tests a device that gently stimulates the vagus nerve through the skin (tVNS) to see if it can safely reduce temper outbursts in people with Prader-Willi syndrome. About 102 participants aged 10 to 40 will use either continuous or intermittent stimulation. The …

This study tests a program called FACE-Rare, designed to support family caregivers of children with rare, life-limiting diseases. The program includes three sessions to help families prepare for future medical decisions and improve their quality of life. Researchers will compare …

This Phase 3 trial tests a nasal spray called carbetocin to reduce the intense, constant hunger (hyperphagia) in people with Prader-Willi syndrome. The study involves 170 participants aged 5 to 30 and lasts 12 weeks. Caregivers will rate changes in hunger-related behaviors using …

This study uses a very powerful 7 Tesla MRI scanner to take detailed pictures of the brain in testicular cancer patients who have low testosterone (hypogonadism) and are on testosterone replacement therapy. The goal is to see if the MRI can detect changes in brain structure and f…

This study aims to find the genes involved in inherited reproductive disorders, such as delayed or early puberty and low hormone levels. Researchers will analyze genetic data from 600 participants with these conditions. The goal is to identify genetic variations that may explain …

This 10-year observational study will follow 500 children with growth hormone deficiency who are receiving the once-weekly injection somapacitan as part of their routine care. Researchers will track side effects, medication errors, and new cases of cancer or type 2 diabetes. The …

This study looks at freezing ovarian tissue in girls with Turner syndrome, a condition that often causes early ovary failure and infertility. Researchers want to find out which patients are most likely to have healthy eggs in their tissue by checking their genes, hormones, and me…

This study investigates how obesity-related factors like high insulin and fat levels may disrupt fertility in women. Researchers will measure hormone changes and metabolic responses in 84 women. The goal is to understand the underlying causes and inform future treatments to impro…

This study aims to uncover the genetic roots of aortic aneurysms and valve disease by analyzing tissue and blood samples from 3,000 participants. Researchers will look for new disease-causing genes and factors that affect disease severity. The goal is to build a biorepository to …

This study follows 300 fetuses and children with sex chromosome disorders to track their growth, organ development, and overall health. Researchers will also look at genetic and gut microbiome factors. The goal is to better understand how these conditions affect children over tim…

This study looks at fetuses with sex chromosome disorders (like extra or missing X or Y chromosomes) that were either miscarried or electively aborted. Researchers will analyze the placenta and fetal tissues to see how the chromosome changes affect gene activity and development. …

This study watches 200 people with lung, gut, or hormone diseases over time using special brain scans (PET). It aims to see how these diseases change brain activity and whether those changes can predict tumor return, spread, or survival. No new treatment is tested—just observatio…

This study looks at children and teenagers with growth hormone deficiency or who were born small for their age. It tracks how closely they follow their prescribed Norditropin® treatment and whether that affects their final height. The study is observational, meaning no new treatm…