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Tall Cell Variant Thyroid Cancer clinical trials

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NCT ID: NCT01441154 Completed - Clinical trials for Papillary Thyroid Cancer

Metabolic Effects of Synthetic Thyroid Hormone for Thyroid Cancer Treatment

Start date: September 20, 2011
Phase:
Study type: Observational

Background: - Thyroid hormone is produced by the thyroid gland, an organ at the base of the neck. Thyroid hormone controls the body's metabolism and the function of many organs. The thyroid gland produces two forms of thyroid hormone: T4 and T3. People who have thyroid cancer are treated with thyroid hormone therapy (synthetic T4, levothyroxine), which at times needs to be stopped to allow for cancer treatments. At these times, a different form of thyroid hormone (synthetic T3, liothyronine) is used to reduce the symptoms caused by low levels of thyroid hormone. Researchers want to know more about how changes in T3 hormone affect the body and organ function. Objectives: - To study how changes in T3 hormone levels affect the body and organ function. Eligibility: - Individuals at least 18 years of age who have had most or all of their thyroid removed to treat thyroid cancer who need to stop taking their regular thyroid hormone dose in preparation for the treatment of thyroid cancer. Design: - The study involves a screening visit and a baseline evaluation. It also includes an 11-day inpatient hospital stay. - Participants will be screened with a physical exam and medical history. They will also have blood tests and a neck ultrasound. - Participants will be evaluated with a physical exam, blood tests, and the following procedures: - Glucose tolerance test to measure blood sugar - Tests of body fat, muscle strength, and calorie burning levels - Imaging studies of the heart, liver, and thigh muscles - Quality of life questionnaires - Food preference and diet questionnaires - After 4 weeks of treatment with T3 hormone, participants will have an 11-day inpatient hospital stay to study the effect of thyroid hormone on their metabolism. The stay will involve the same tests done in the baseline evaluation.

NCT ID: NCT00001160 Recruiting - Thyroid Cancer Clinical Trials

Studies on Tumors of the Thyroid

Start date: June 1, 1977
Phase:
Study type: Observational

Participants in this study will be patients diagnosed with or suspected to have a thyroid nodule or thyroid cancer. The main purpose of this study is to further understand the methods for the diagnosis and treatment of thyroid nodules and thyroid cancer. Many of the test performed are in the context of standard medical care that is offered to all patients with thyroid nodules or thyroid cancer. Other tests are performed for research purposes. In addition, blood and tissue samples will be taken for research and genetic studies.