Anovulation

This study compares taking the fertility drug letrozole for 10 days versus the usual 5 days in women with PCOS who want to get pregnant. About 20 women aged 18-40 will be randomly assigned to one of the two groups. The goal is to see if the longer treatment leads to more ovulatio…

This study tests whether taking two fertility drugs together (letrozole and clomiphene citrate) works better than letrozole alone for women with ovulation disorders who are trying to conceive. Researchers will compare live birth rates after one treatment cycle in 600 women across…

This study at the National Institutes of Health is looking at 1,000 adults with known or suspected hormone gland (endocrine) disorders. The goal is to better understand these conditions and help train doctors. Participants may receive tests, treatments, or surgery as part of thei…

This study enrolls up to 15,000 children with known or suspected endocrine or metabolic disorders, along with their family members. Researchers will collect medical records, blood, saliva, and other samples to identify genetic changes linked to these conditions. The goal is to be…

This study enrolls adults with known or suspected endocrine (hormone gland) disorders, such as diabetes or thyroid disease, to help researchers learn more about these conditions. Participants will undergo medical exams, blood and imaging tests, and possibly genetic testing. The m…

This study is testing a tool called B-COMPASS that uses a 22-question survey to predict whether people will follow their prescribed treatments. Researchers will enroll 3100 adults with cardiovascular, endocrine, immune, nerve, cancer, or rare diseases across Europe. The goal is t…

This study is creating a huge collection of ultrasound images from the uterus and ovaries. Researchers will gather scans from 25,000 women, both healthy and with gynecological conditions, during routine checkups. The goal is to build a database that doctors and artificial intelli…

This study is building a large registry of women with Functional Hypothalamic Amenorrhea (FHA), a condition where the body stops having periods due to stress, low weight, or excessive exercise. Researchers will track up to 100,000 participants over time to learn how common FHA is…