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Discover 23,284 clinical trials near Maryland. Find research studies in your area.
Showing 3901-3920 of 23,284 trials
NCT03312400
Background: DNA is a structure in the body. It contains data about how the body develops and works. Telomeres are found on the end of chromosomes in DNA. Some people with short telomeres or other gene changes can develop diseases of the bone marrow, lung, and liver. Researchers want to see if low doses of the hormone drug danazol can help. Objective: To study the safety and effect of low dose danazol. Eligibility: People ages 3 and older with a telomere disease who have either very short telomeres and a specific gene change. They must also show signs of aplastic anemia, lung, or liver disease. Design: Participants will be screened in another protocol. Participants will have: * Medical history * Physical exam * Blood tests * Lung exam. They will breathe into an instrument that records the amount and rate of air breathed in and out over a period of time. 6-minute walking test. * Abdominal ultrasound and liver scan. These tests use sound waves to measure the fibrosis in the liver. Some participants will have: * Pregnancy test * Small sample of the liver removed * Bone marrow biopsy. The bone will be numbed and a small needle will take a sample of the marrow. All participants will have hormone levels checked. All child participants will see a pediatric endocrinologist. Children may need to have a hand x-ray. We will monitor patients for 6 months before starting danazol. Participants will take danazol by mouth twice a day for 1 year. Participants must return to the clinic at 6 months and 12 months while on danazol and 6 months after stopping it. They will have blood and urine tests, a lung exam, abdominal ultrasound, and liver scan.
NCT05695339
Morton s neuroma is an irritation of the nerves that affect the feet. People with this condition may have burning or shooting pain in the balls of their feet. They may also have numbness in adjacent areas. These symptoms may become more frequent and severe over time. The pain may become permanent. Current treatments tend to be short-lived, and they do not work in all people. Better treatments are needed. Objective: To test a study drug, resiniferatoxin (RTX), in people with Morton s neuroma. Eligibility: Healthy people aged 18 and older who have Morton s neuroma and have tried other standard treatments that did not ease their pain. Design: Participants will be involved in the study up to 4 months. They will be screened. They will have a physical exam with blood tests. They will have a test of their heart function. They will have X-rays of their affected feet. They will have tests to assess their pain and how their feet react to touch and changes in temperature. They will complete questionnaires about their pain. RTX is injected into the foot at the site of the nerve pain. Participants will receive a shot to numb the area before the RTX is administered. They will be monitored in the clinic for 4 hours after they receive the RTX. Participants will receive up to 5 follow-up phone calls per week. Each call will take 5 to 10 minutes. They will be asked about their foot pain and whether they have had any side effects from the RTX. Participants will return to the clinic 4 weeks after the treatment. Previous tests will be repeated.