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7 clinical studies listed.

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Amenorrhea

Tundra lists 7 Amenorrhea clinical trials. Each listing includes eligibility criteria, study locations, and direct links to research sites in the Tundra directory.

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RECRUITING

NCT01500447

Inherited Reproductive Disorders

Background: \- During puberty, children begin to develop into adults. Problems with the hormones released during puberty can affect the reproductive system. Some people have low hormone levels that severely delay or prevent puberty. Others start puberty abnormally early. Other people may have a normal puberty but develop reproductive disorders later in life. Researchers want to study people with reproductive disorders to learn more about how these disorders may be inherited. Objectives: \- To learn how reproductive system disorders may be inherited. Eligibility: * People with one of the following problems: * Abnormally early puberty * Abnormally late or no puberty * Normal puberty with hormonal problems that develop later in life * People who have not yet had puberty but have symptoms that indicate low hormone levels. Design: * Participants will provide a blood sample for testing. They will complete a questionnaire about their symptoms. They will also have a scratch-and-sniff test to study any problems with their ability to smell. * Participant medical records will be reviewed. Participants will also provide a family medical history. * Family members of those in the study may be invited to participate. * Treatment will not be provided as part of this study.

Gender: All

Ages: 6 Weeks - 120 Years

Updated: 2026-03-24

2 states

Genetic Disorder
Infertility
Hypogonadism
+1
ACTIVE NOT RECRUITING

NCT00589654

Menstrual Cycle Maintenance and Quality of Life: A Prospective Study

Very little is known about the incidence, onset, time course, and symptomatology of premature menopause induced by breast cancer therapy. No prospective study exists. The purpose of the present study is to identify determinants of treatment-related amenorrhea nad its effect on quality of life in a cohort of youg breast cancer patients.

Gender: FEMALE

Ages: 18 Years - 45 Years

Updated: 2026-01-07

1 state

Amenorrhea
Menstrual Cycle
Breast Cancer
RECRUITING

NCT06800170

Treatment of Menstrual Cycle Alterations in Adolescents

the aim of the present study is intended to evaluate how treatment with Myo-Inositol and Dioscorea Villosa can help improve menstrual cycle irregularities in adolescents, both with and without PCOS.

Gender: FEMALE

Ages: 14 Years - 19 Years

Updated: 2026-01-06

3 states

Amenorrhea
Oligomenorrhea
PCOS (Polycystic Ovary Syndrome)
RECRUITING

NCT06280807

Observation of Environment and Reproductive-Endocrine Effects

Background: Endocrine disorders occur when the glands that make hormones do not work properly. Hormones levels that are too high or too low can cause problems such as late or early puberty, irregular periods, and infertility. Environmental factors - including pollution; chemical exposure at home and work; foods; medicines; and sleep habits - may cause problems with the endocrine and reproductive systems. Objective: To learn how environmental factors may affect the endocrine and reproductive systems. Eligibility: Males or females, referring to sex assigned at birth, aged 8 years and older; they must have hypogonadism, infertility, or other reproductive disorders. Design: Adult participants will have 4 to 5 visits in 5 years. Children may have up to 12 visits; they may remain in the study up to the age of 23. Most visits will be less than 3 hours. Participants will be screened. They will have a physical exam. They will have blood and urine tests. They will complete questionnaires; they will answer questions about their diet, health, and other topics. Some may be referred for additional tests, such as imaging scans and semen analysis. Specific tests conducted during study visits will vary, depending on the participant s diagnosis. In addition to repeated blood and urine tests, these may include: Body composition measure: Participants will sit in a pod-shaped machine for about 6 minutes. The machines measures the air inside the capsule to record body fat and breathing volume. Resting energy expenditure test: Participants will lie down with a clear dome placed over their head. They will breathe quietly for 30 minutes. This test measures the number of calories their body burns at rest. ...

Gender: All

Ages: 8 Years - 99 Years

Updated: 2025-12-23

1 state

Hypogonadism
Hypergonadism
Precocious Puberty
+2
RECRUITING

NCT07015476

Retrospective Observational Evaluation of the Bone Mineral Density Outcome in Young Women With Amenorrhea

The study aims to evaluate the outcomes of different estrogen therapy regimens in patients with amenorrhea who face prolonged periods of hypoestrogenism. The primary objective is to compare the outcomes on bone mass of different therapeutic regimens and identify more favorable. For this purpose, densitometry parameters such as BMD, T-score and Z-score at the level of the lumbar spine, femur and entire skeleton will be considered, comparing a bone densitometry (DXA technique, Dual X-ray Absorptiometry) Baseline with one carried out after at least one year of therapy. The secondary objective of the study is to assess other systemic/metabolic implications of the different therapies.

Gender: FEMALE

Ages: 15 Years - 39 Years

Updated: 2025-06-11

Amenorrhea
RECRUITING

NCT03916978

Autologous PRP Intra Ovarian Infusion to Restore Ovarian Function in Menopausal Women

Autologous PRP intra ovarian infusion may restore ovarian function, may promote folliculogenesis and may improve hormonal profile of women in menopause.

Gender: FEMALE

Ages: 45 Years - 55 Years

Updated: 2024-12-27

Infertility, Female
Anovulatory Infertility
Menopause
+1
RECRUITING

NCT04424576

Ovarian Morphology in Girls

Establishment of regular menstrual cycles is a key component of reproductive maturation and a recognized vital sign for health and well-being. Irregular menstrual cycles are especially common for the first 2-3 years after an adolescent's first menstrual period (i.e., menarche), which delays the identification and diagnosis of early reproductive disturbances such as polycystic ovary syndrome (PCOS). The purpose of this research study is to determine whether the ovary can serve as a reliable predictor of normal or abnormal development by following the trajectory of ovarian morphology in conjunction with menstrual cyclicity using 3D transabdominal ultrasound imaging in a prospective cohort study of adolescents. A secondary objective is to identify potential environmental factors such as diet and the gut microbiome which influence the trajectory towards normal or abnormal reproductive development.

Gender: FEMALE

Ages: 9 Years - 17 Years

Updated: 2024-08-12

2 states

Amenorrhea
Oligomenorrhea
Puberty