Clinical Research Directory

Skeletal Muscle Biomarkers in People With Fragile Sarcolemmal Muscular Dystrophy

Background: \- Some kinds of muscular dystrophy affect the skeletal muscle membrane. In these conditions, the muscle membrane is more fragile. This affects how the muscles contract and relax, which causes movement problems. Researchers are looking at several muscle enzymes, or chemicals that affect how muscle cells function. By studying changes in these enzymes, they may be able to better understand how muscular dystrophy affects the cells. Researchers want to collect biomarkers (chemicals from blood samples) from people with fragile sarcolemmal muscular dystrophy. This information may provide better treatments for this condition. Objectives: \- To study biomarkers that may affect the muscles of people with fragile sarcolemmal muscular dystrophy. Eligibility: \- Individuals at least 18 years of age with fragile sarcolemmal muscular dystrophy. Design: * Participants will be screened with a medical history and physical exam. * Participants will be asked to come for four visits to the National Institutes of Health Clinical Center. The visits will be at least 2 months apart. Each visit will require participants to stay for 5 days at the clinical center. * During each visit, participants will provide frequent small blood samples. These samples will be collected while at rest and after physical exercise. * Participants will also have a physical therapy assessment. They will perform standard motor function tests and imaging tests (MRI, MRS). These tests may take up to 1 hour each time. * Treatment will not be provided as part of this study.

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.

Evaluation of Association Between Testosterone Levels, Dementia, and Adverse Mental Health Outcomes

This study evaluates the association between testosterone levels and risk of dementia and adverse mental health outcomes (e.g. depression and anxiety). It is not known whether low testosterone levels may be associated with an increased risk of dementia. Learning about the association between testosterone levels and risk of dementia may help determine the long-term effects of androgen deprivation therapy and may help improve quality of life.

DNA Sequencing in Clinical Practice, Mayo Clinic Health Tapestry Study

This clinical trial collects information on how sequencing a patient's deoxyribonucleic acid (DNA) (i.e., the genetic material) could impact their health care. This study also develops and improves ways to include genomic information from DNA sequencing into the electronic health record to create a more complete "Health Tapestry" for each participant. Sequencing of a patient's DNA leads to the detection of genetic variants some of which determine risk for disease development. Discovery of those genetic variants in a patient could result in prevention, earlier diagnosis or better therapy of disease.

SLC13A5 Deficiency Natural History Study - United States Only

SLC13A5 deficiency (Citrate Transporter Disorder, EIEE 25) is a rare genetic disorder with neurodevelopmental delays and seizure onset in the first few days of life. This natural history study is designed to address the lack of understanding of disease progression. Additionally it will identify clinical and biomarker endpoints for use in future clinical trials.

Promoting Stress Management and Resilience Among Individuals With Von Hippel- Lindau Disease

The Relaxation Response Resiliency Program (3RP) has shown efficacy in improving coping and resilience across diverse populations; however, little is known about how it helps individuals manage the challenges of living with a chronic illness. This study proposes to pilot test an adapted version of the 3RP among patients living with VHL.

Utility of Gene Test Analysis for Diagnosis, Prognosis and Treatment of Patients With Genetic Arrhythmic Heart Disease: the ARRHYTHMIC GENE-HEART

The goal of this observational study is to enroll all patients evaluated at the specialized Cardiogenetic Center within the Cardiology Department of the University of Ferrara, Italy. The primary aim of the registry is to collect comprehensive clinical, genetic, and electrophysiological data from individuals with suspected or confirmed arrhythmogenic conditions. By systematically documenting patient demographics, family history, clinical presentations, diagnostic findings, and treatment outcomes, the registry seeks to enhance our understanding of the genetic basis and clinical implications of genetically driven arrhythmias and systemic syndromes. This registry will facilitate long-term follow-up of enrolled patients to assess the natural history of arrhythmogenic disorders and the effectiveness of various therapeutic interventions. Additionally, it aims to identify potential risk factors associated with adverse outcomes, such as sudden cardiac death or major arrhythmic events.

SLC13A5 Deficiency Natural History Study - Remote Only

SLC13A5 deficiency (Citrate Transporter Disorder, EIEE 25) is a rare genetic disorder with neurodevelopmental delays and seizure onset in the first few days of life. This natural history study is designed to address the lack of understanding of disease progression and genotype-phenotype correlation. Additionally it will help in identifying clinical endpoints for use in future clinical trials.

Lipid Transport Disorder Italian Genetic Record (LIPIGEN)

LIPIGEN is an observational study involving Italian physicians and researchers in the field of diseases related to blood lipid levels. This study aims to improve the diagnosis and treatment of people with familial dyslipidaemias, including very common conditions such as familial hypercholesterolaemia (FH) and less common ones such as familial chylomicronidaemic syndrome (FCS). What does the study do? It collects information on Italian patients with Familial Hypercholesterolaemia (FH), following them in their normal clinical examination without adding extra procedures. It uses the data collected to further our understanding of diseases such as familial hypercholesterolaemia, examining how it is diagnosed clinically and by genetic testing, and evaluating the effectiveness of different treatments. It seeks to identify the genetic mutations that cause familial hypercholesterolaemia and other dyslipidaemias, helping to choose the most effective treatments. It evaluates the impact of long-term treatments and patient adherence to medication, as well as monitoring the incidence of cardiovascular events and other important outcomes. Who can participate? The study is aimed at people of all ages, from children to adults, with familial hypercholesterolaemia or other genetic dyslipidaemia. More than 50 centres throughout Italy are involved, making the study accessible to many. What does participation entail? Participants will continue with their normal clinical practice. Data such as family history, personal clinical findings and genetic information will be collected, without additional procedures. For some, further evaluations, such as ultrasounds, may be required to better study their condition. The LIPIGEN study not only helps to better understand diseases related to high cholesterol but also aims to improve patients\' lives through more precise diagnosis and personalised treatments.