22,347 studies
4,463 sponsors
3,211 conditions

Sponsor Condition of Interest
MagnetisMM-32: A Study to Learn About the Study Medicine Called Elranatamab in People With Multiple1
Pfizer Multiple Myeloma
The purpose of this study is to learn about the study medicine called elranatamab.This study aims to compare elranatamab to other medicines for the treatment of MM (a type of cancer). This study is seeking participants who: - Are 18 years of age or older and have MM. - Have received treatm1 expand

The purpose of this study is to learn about the study medicine called elranatamab.This study aims to compare elranatamab to other medicines for the treatment of MM (a type of cancer). This study is seeking participants who: - Are 18 years of age or older and have MM. - Have received treatments before for MM. - Have MM that has returned or not responded to their most recent treatment. Half of the participants will receive elranatamab. The other half of participants will receive a combination therapy selected by the study doctor. The selected combination therapy will include 2 to 3 different medicines commonly used to treat MM. Elranatamab will be given as a shot under the skin at the study clinic about once a week. This may change to a smaller number of shots later in the study. The medicines in the combination therapy will be taken by mouth (at home or at the study clinic) AND will be given either as: - a shot under the skin at the study clinic - through a needle in the vein at the study clinic The number of times these medicines will be taken depends on what combination therapy the study doctor selects. Participants may continue to receive elranatamab or a combination therapy until their MM is no longer responding. The study team will see how each participant is doing with the study treatment during regular visits at the study clinic. The study team will continue to follow-up with participants after study treatment with telephone contacts (or visits). The study will compare the experiences of people receiving elranatamab to those people receiving a combination therapy. This will help learn about the safety and how effective elranatamab is.

Type: Interventional

Start Date: Feb 2024

open study

Study of Opevesostat (MK-5684) Versus Alternative NHA in mCRPC (MK-5684-003)
Merck Sharp & Dohme LLC Prostate Cancer Metastatic
This is a phase 3, randomized, open-label study of opevesostat compared to alternative abiraterone acetate or enzalutamide in participants with metastatic castration-resistant prostate cancer (mCRPC) with respect to overall survival (OS) in participants with mCRPC previously treated with next-gener1 expand

This is a phase 3, randomized, open-label study of opevesostat compared to alternative abiraterone acetate or enzalutamide in participants with metastatic castration-resistant prostate cancer (mCRPC) with respect to overall survival (OS) in participants with mCRPC previously treated with next-generation hormonal agent (NHA) and taxane-based chemotherapy. It is hypothesized that opevesostat is superior with respect to OS in androgen receptor ligand binding domain (AR LBD) mutation-negative and -positive participants.

Type: Interventional

Start Date: Dec 2023

open study

Prehabilitation Program to Improve Cardiac Reserve in High-Risk Patients Undergoing Hematopoietic S1
University of Michigan Rogel Cancer Center Hematopoietic Stem Cell Transplant
To assess the feasibility and preliminary effectiveness of a Cardio-Oncology Prehabilitation program in patients at high-risk of developing Cardiovascular (CV) events in improving Cardiorespiratory fitness (CRF) and reducing acute CV complications in Hematopoietic stem cell transplant (HSCT) recipi1 expand

To assess the feasibility and preliminary effectiveness of a Cardio-Oncology Prehabilitation program in patients at high-risk of developing Cardiovascular (CV) events in improving Cardiorespiratory fitness (CRF) and reducing acute CV complications in Hematopoietic stem cell transplant (HSCT) recipients.

Type: Interventional

Start Date: Aug 2023

open study

FOG-001 in Locally Advanced or Metastatic Solid Tumors
Parabilis Medicines, Inc. Cancer Colorectal Cancer Solid Tumor Locally Advanced Solid Tumor Metastatic Cancer
The goal of this clinical trial is to determine if FOG-001 is safe and effective in participants with locally advanced or metastatic solid tumors. expand

The goal of this clinical trial is to determine if FOG-001 is safe and effective in participants with locally advanced or metastatic solid tumors.

Type: Interventional

Start Date: May 2023

open study

A Study to Evaluate the Long-Term Safety of Astegolimab in Participants With Chronic Obstructive Pu1
Hoffmann-La Roche Chronic Obstructive Pulmonary Disease
The purpose of this study is to assess the long-term safety and to explore the efficacy of astegolimab in participants with chronic obstructive pulmonary disease (COPD) who have completed the 52-week placebo-controlled treatment period in parent studies GB43311 or GB44332. expand

The purpose of this study is to assess the long-term safety and to explore the efficacy of astegolimab in participants with chronic obstructive pulmonary disease (COPD) who have completed the 52-week placebo-controlled treatment period in parent studies GB43311 or GB44332.

Type: Interventional

Start Date: Jun 2023

open study

Loc3CAR: Locoregional Delivery of B7-H3-CAR T Cells for Pediatric Patients With Primary CNS Tumors
St. Jude Children's Research Hospital Central Nervous System Neoplasms Atypical Teratoid/Rhabdoid Tumor Diffuse Midline Glioma, H3 K27M-Mutant Ependymoma High Grade Glioma
Loc3CAR is a Phase I clinical trial evaluating the use of autologous B7-H3-CAR T cells for participants ≤ 21 years old with primary CNS neoplasms. B7-H3-CAR T cells will be locoregionally administered via a CNS reservoir catheter. Study participants will be divided into two cohorts: cohort A with B1 expand

Loc3CAR is a Phase I clinical trial evaluating the use of autologous B7-H3-CAR T cells for participants ≤ 21 years old with primary CNS neoplasms. B7-H3-CAR T cells will be locoregionally administered via a CNS reservoir catheter. Study participants will be divided into two cohorts: cohort A with B7-H3-positive relapsed/refractory non-brainstem primary CNS tumors, and cohort B with diffuse midline gliomas (DMG). Participants will receive four (4) B7-H3-CAR T cell infusions over a 4 week period. The purpose of this study is to find the maximum (highest) dose of B7-H3-CAR T cells that are safe to give patients with primary brain tumors. Primary objectives - To determine the safety, maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) for the locoregional delivery of autologous B7-H3-CAR T cells in patients ≤ 21 years of age with recurrent/refractory B7-H3+ primary CNS tumors (Cohort A) or DMG (Cohort B). Secondary objectives - To assess the efficacy, defined as sustained objective response, a partial response (PR) or complete response (CR) observed anytime on active treatment with B7-H3-CAR T cells in patients with relapsed/refractory B7-H3+ primary CNS tumors (Cohort A) or DMG (Cohort B). - To characterize and monitor neurologic toxicities in patients while on study (Cohort A and B).

Type: Interventional

Start Date: Apr 2023

open study

A Study to Investigate the Pharmacokinetics and Safety of Risdiplam in Infants With Spinal Muscular1
Hoffmann-La Roche Muscular Atrophy, Spinal
This study will evaluate the pharmacokinetics (PK) and safety of risdiplam in participants with spinal muscular atrophy (SMA) under 20 days of age at first dose. expand

This study will evaluate the pharmacokinetics (PK) and safety of risdiplam in participants with spinal muscular atrophy (SMA) under 20 days of age at first dose.

Type: Interventional

Start Date: Apr 2024

open study

Phase II IMNN-001 (Also Known as GEN-1) on SLL With BEV and NACT, Newly Diagnosed Advanced Ovarian,1
Imunon Ovarian Cancer Fallopian Tube Cancer Primary Peritoneal Cancer
This is a 1:1 randomized, open label, multi-center phase I/II trial to evaluate the safety, dosing, efficacy, and biological activity of adding IMNN-001 to chemotherapy + BEV compared to chemotherapy + BEV alone. expand

This is a 1:1 randomized, open label, multi-center phase I/II trial to evaluate the safety, dosing, efficacy, and biological activity of adding IMNN-001 to chemotherapy + BEV compared to chemotherapy + BEV alone.

Type: Interventional

Start Date: Feb 2023

open study

Safety and Effectiveness of Giroctocogene Fitelparvovec or Fidanacogene Elaparvovec in Patients Wit1
Pfizer Hemophilia A Hemophilia B
A study to learn about the long-term safety and efficacy of giroctocogene fitelparvovec or fidanacogene elaparvovec in patients with hemophilia A or hemophilia B respectively, who have received treatment through prior participation in a Pfizer-sponsored clinical trial. Data collection and participa1 expand

A study to learn about the long-term safety and efficacy of giroctocogene fitelparvovec or fidanacogene elaparvovec in patients with hemophilia A or hemophilia B respectively, who have received treatment through prior participation in a Pfizer-sponsored clinical trial. Data collection and participant visits will be based on standard of care.

Type: Interventional

Start Date: Dec 2022

open study

Defining Neurobiological Links Between Substance Use and Mental Illness
National Institute on Drug Abuse (NIDA) Major Depressive Disorder Substance Use Disorder Normal Physiology
Background: Nicotine dependence leads to about 480,000 deaths every year in the United States. People with major depressive disorder (MDD) are twice as likely to use nicotine compared to the general population. They have greater withdrawal symptoms and are more likely to relapse after quitting com1 expand

Background: Nicotine dependence leads to about 480,000 deaths every year in the United States. People with major depressive disorder (MDD) are twice as likely to use nicotine compared to the general population. They have greater withdrawal symptoms and are more likely to relapse after quitting compared with smokers without MDD. More research is needed on how nicotine affects brain function in those with MDD. Objective: To understand how nicotine affects symptoms of depression and related brain function. Eligibility: People aged 18 to 60 years, at the time of consent, with and without MDD who do not smoke cigarettes or use other nicotine products. Design: Participants will have 2 or 3 study visits over 1 year. Participants will have 2 MRI scans no less than 4 days apart. Each scan visit will last 5 to 7 hours. At each scan, they will have urine and breath tests to screen for recent use of alcohol, nicotine, and illegal drugs. Before each scan, they will take 1 of 2 medications: nicotine or placebo. Participants will receive each medication once. They will not know which medication they are receiving at each scan. For each MRI scan, they will lie on a table that slides into a cylinder. Sometimes they will be asked to lie still. Sometimes they will complete tasks on a computer. Tasks may include identifying colors or playing games to win money. Each scan will take about 2 hours. Participants will answer questions about their thoughts, feelings, and behaviors before and after each scan. They will have a blood test after each scan.

Type: Interventional

Start Date: Feb 2023

open study

A Study Investigating Oral Ozanimod (RPC1063) in Pediatric Participants With Moderate to Severe Act1
Bristol-Myers Squibb Colitis, Ulcerative
The purpose of this study is to evaluate the effectiveness and safety of ozanimod (RPC1063) in achieving and maintaining clinical remission. Ozanimod will be administered orally to pediatric participants with moderate to severe active ulcerative colitis (UC) who have had an inadequate response to c1 expand

The purpose of this study is to evaluate the effectiveness and safety of ozanimod (RPC1063) in achieving and maintaining clinical remission. Ozanimod will be administered orally to pediatric participants with moderate to severe active ulcerative colitis (UC) who have had an inadequate response to conventional therapy.

Type: Interventional

Start Date: May 2022

open study

A Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of Obinutuzumab in Adolescents With1
Hoffmann-La Roche Lupus Nephritis
This phase II, randomized, double-blind, placebo-controlled study is designed to evaluate the safety, efficacy and pharmacokinetics (PK) of obinutuzumab in adolescent participants (AP) aged 12 to less than 18 with biopsy-confirmed proliferative lupus nephritis (LN). It will also evaluate open label1 expand

This phase II, randomized, double-blind, placebo-controlled study is designed to evaluate the safety, efficacy and pharmacokinetics (PK) of obinutuzumab in adolescent participants (AP) aged 12 to less than 18 with biopsy-confirmed proliferative lupus nephritis (LN). It will also evaluate open label safety and PK of obinutuzumab in pediatric participants (PP), aged 5 to <12 with LN.

Type: Interventional

Start Date: May 2022

open study

Abemaciclib in Patients With HIV-associated and HIV-negative Kaposi Sarcoma
National Cancer Institute (NCI) Kaposi Sarcoma
Background: Kaposi Sarcoma (KS) is common in people with human immunodeficiency virus (HIV) but can also occur in people who do not have HIV. KS tumors usually involve the skin, but may also involve lymph nodes, lungs, bone, and gastrointestinal tract. Researchers want to see if a drug that is cur1 expand

Background: Kaposi Sarcoma (KS) is common in people with human immunodeficiency virus (HIV) but can also occur in people who do not have HIV. KS tumors usually involve the skin, but may also involve lymph nodes, lungs, bone, and gastrointestinal tract. Researchers want to see if a drug that is currently used to treat a type of breast cancer can help. Objective: To find a safe dose of abemaciclib to treat KS and to see if it can shrink lesions or tumors. Eligibility: People ages 18 and older with KS. Design: Participants will be screened with some or all of the following: Medical history Physical exam Blood and urine tests Chest x-ray and/or computed tomography scans Lung or gastrointestinal tract exam with an endoscope (a flexible instrument to examine the interior of the organ) Medicine review Heart function tests KS lesion assessment Skin sample from a KS lesion Treatment will be given in 28-day cycles. Participants will take the study drug tablets by mouth everyday. They will keep a medicine diary. They will get the study drug until their cancer gets worse or they have unacceptable side effects. Participants who stopped taking abemaciclib because it was no longer providing additional benefit may be able to restart abemaciclib again. Participants will have a study visit at the beginning of each cycle. At these visits, they will repeat some screening tests. They may have medical photographs taken of body surfaces. They may complete questionnaires about their quality of life. They may give skin and saliva samples. For skin samples, an area of skin will be numbed. A small circle of skin over an area affected by KS will be removed. Participants will have follow-up visits for up to 2 years after treatment ends.

Type: Interventional

Start Date: Sep 2021

open study

Examining the Impact of Exercise Training on Vascular Dysfunction in Individuals With Mental Health1
Virginia Commonwealth University Peripheral Vascular Diseases
The purpose of this research study is to examine the role oxidants, substances produced in the blood that can damage blood vessel function, may play in blood vessel function in healthy individuals as well as individuals with mental health disorders (posttraumatic stress disorder (PTSD) and/or gener1 expand

The purpose of this research study is to examine the role oxidants, substances produced in the blood that can damage blood vessel function, may play in blood vessel function in healthy individuals as well as individuals with mental health disorders (posttraumatic stress disorder (PTSD) and/or generalized anxiety disorder (GAD)).

Type: Interventional

Start Date: Aug 2021

open study

A Phase 1/2 Study of Bleximenib in Participants With Acute Leukemia (cAMeLot-1)
Janssen Research & Development, LLC Acute Leukemia
The purpose of this study is to determine the recommended Phase 2 dose(s) (RP2D[s]) of bleximenib in phase 1 Part 1 (Dose Escalation) and to determine the safety and tolerability at RP2D in Phase 1 Part 2 (Dose expansion). The purpose of the Phase 2 part of the study is to evaluate the efficacy of1 expand

The purpose of this study is to determine the recommended Phase 2 dose(s) (RP2D[s]) of bleximenib in phase 1 Part 1 (Dose Escalation) and to determine the safety and tolerability at RP2D in Phase 1 Part 2 (Dose expansion). The purpose of the Phase 2 part of the study is to evaluate the efficacy of bleximenib at the RP2D.

Type: Interventional

Start Date: May 2021

open study

Long-term Safety Study of Rimegepant in Pediatric Subjects for the Acute Treatment of Migraine
Pfizer Acute Treatment of Migraine
The purpose of this study is to test the long-term safety of rimegepant in the acute treatment of migraine in children and adolescents (≥ 6 to < 18 years of age). expand

The purpose of this study is to test the long-term safety of rimegepant in the acute treatment of migraine in children and adolescents (≥ 6 to < 18 years of age).

Type: Interventional

Start Date: Apr 2021

open study

Pediatric Long-Term Follow-up and Rollover Study
Novartis Pharmaceuticals Diffuse Astrocytoma Anaplastic Astrocytoma Astrocytoma Oligodendroglioma, Childhood Anaplastic Oligodendroglioma
A roll-over study to assess long-term effect in pediatric patients treated with dabrafenib and/or trametinib. expand

A roll-over study to assess long-term effect in pediatric patients treated with dabrafenib and/or trametinib.

Type: Interventional

Start Date: Nov 2019

open study

Early Tracking of Childhood Health Determinants (ETCHED) Study
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) Diabetes Mellitus Obesity Fatty Liver
Background: Children s weight has increased sharply in recent years. This may put them at higher risk for health problems. High blood glucose in a pregnant mother and too much weight gain during pregnancy also may have long-term effects on the child s health. Children who become overweight or obes1 expand

Background: Children s weight has increased sharply in recent years. This may put them at higher risk for health problems. High blood glucose in a pregnant mother and too much weight gain during pregnancy also may have long-term effects on the child s health. Children who become overweight or obese during childhood tend to remain so as adults. Researchers want to study many risk factors during and after pregnancy, and how these affect a child s development. They will also follow the mother s health and well-being after pregnancy. Objectives: To learn how a pregnant mother s environment, lifestyle, and health conditions may affect her child s growth and development from birth until adulthood. Eligibility: American Indian/Alaska Native (AI/AN) or Hispanic adult pregnant women and their offspring. Design: Mothers will have 3 visits during pregnancy. In the child s first year, mothers will have 2 visits and their child will have 4. Children will have 2 visits in their second year and 1 each year until they turn 18. Mothers will have a visit 2 years after birth and 4-5 years later. Both the mother and child s medical records will be reviewed. They will have physical exams and give blood and stool samples. Mothers may give cord blood and placenta samples. They will give breastmilk and urine samples. They will fill out questionnaires. They will have an ultrasound. They may get an activity monitor. Mother and child will be followed until the child s 18th birthday. ...

Type: Observational

Start Date: Apr 2022

open study

Gonadal Tissue Freezing for Fertility Preservation in Individuals at Risk for Ovarian Dysfunction,1
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD) Turner Syndrome Post-menarcheal Adolescents Ovarian Disfunction Galactosemia Variations in Sex Characteristics
Background: Turner Syndrome, galactosemia, and premature ovarian insufficiency are all conditions that may make it very hard or impossible for a person to become pregnant and have their own child. Researchers want to learn more about why this happens and if freezing Gonadal tissue allows for ferti1 expand

Background: Turner Syndrome, galactosemia, and premature ovarian insufficiency are all conditions that may make it very hard or impossible for a person to become pregnant and have their own child. Researchers want to learn more about why this happens and if freezing Gonadal tissue allows for fertility preservation. Objective: To find out why people with certain conditions have can have premature ovarian insufficiency (POI or early menopause) and individuals with variations in sex characteristics have trouble getting pregnant and if freezing the gonads tissue from them will help to have their own child in the future. Eligibility: Individuals aged 2-21 who have Turner Syndrome or galactosemia. Also, females aged 13-21 with premature ovarian insufficiency, individuals with variations in sex characteristics, and individuals 2-35 receiving high-risk gonadotoxic therapy Design: Participants will be screened with a medical history. Participants may have a physical exam and blood tests. Their body measurements may be taken. These include weight, height, arm span, skin fold, and sitting height. They may fill out surveys about their quality of life, body image, and health. Participants may have a transabdominal pelvic ultrasound. A probe will be placed on their belly and will take pictures of the organs in the pelvis. They may have a transvaginal pelvic ultrasound performed while asleep in the operating room if needed. Participants may have surgery to remove an gonads and skin biopsy. The removed tissue will be frozen and stored. The tissue will have to be stored for many years. NIH will pay to store the tissue for 1 year. After that, participants will have to pay for storage. A piece of the gonads (no more than 20%) will be used for research Travel, lodging and meals for participants traveling greater than 50 miles will be reimbursed based off the government rate. Local participants will not be reimbursed. Participants will have a checkup 6 weeks after surgery one or more follow-up visits 6-18 months after surgery. They may have phone follow-up every 12-24 months after surgery. Participation will last 30 years.

Type: Observational

Start Date: Sep 2021

open study

Geospatial Analysis of Neighborhood Environmental Stress in Relation to Biological Markers of Cardi1
National Heart, Lung, and Blood Institute (NHLBI) Cardiovascular (CV) Risk
Background: Heart disease is a leading cause of death in the United States. Healthy diet and exercise improve heart health. Some features of where a person lives can lead to stress and decrease chances for exercise. Researchers want to see how these factors may increase the risk of heart disease i1 expand

Background: Heart disease is a leading cause of death in the United States. Healthy diet and exercise improve heart health. Some features of where a person lives can lead to stress and decrease chances for exercise. Researchers want to see how these factors may increase the risk of heart disease in women. Objective: To see if there are differences in stress levels between women who live in different parts of Washington, DC. Also, to see how these women use their neighborhoods for exercise. Eligibility: Healthy white or black females ages 19-45 who live in Washington, DC, who have access to a smartphone Design: Participants may stay at the NIH Clinical Center overnight for a 2-day visit. Visit 1 will include: Physical exam Blood tests Electrocardiogram: Electrodes on the participant s skin will measure heart activity. PET/CT scan: Participants will get an injection. They will lie in a machine that takes pictures of the body. Surveys Body size measurements Nutrition consultation Blood vessel tests: This is measured with blood pressure cuffs, a device placed on the participant s fingertip, and a probe placed on the participant s neck. Resting Energy Expenditure: Participants will breathe under a clear hood for 45 minutes. Participants will be followed for about 2 weeks. They will wear a device on the wrist and carry a GPS device. Through a mobile app, they will answer short daily surveys on stress and exercise. Visit 2- Device return Nutritional consultation

Type: Observational

Start Date: Oct 2021

open study

Phenotype/Genotype Correlations in Movement Disorders
National Institute of Neurological Disorders and Stroke (NINDS) Movement Disorder
The goal of this protocol is to identify families with inherited movement disorders and evaluate disease manifestations to establish an accurate clinical diagnosis by using newest technological advances and investigate the underlying molecular mechanisms. Studies of inherited movement disorders in1 expand

The goal of this protocol is to identify families with inherited movement disorders and evaluate disease manifestations to establish an accurate clinical diagnosis by using newest technological advances and investigate the underlying molecular mechanisms. Studies of inherited movement disorders in large families with good genealogical records are especially valuable. Patients with diseases of known molecular basis will be genotyped in order to investigate phenotype/genotype correlation. Patients with disease of unknown or incomplete genetic characterization will be studied with a hope of contributing to the identification of specific disease-causing genes and genetic mechanisms responsible for a specific disorder.

Type: Observational

Start Date: Oct 2001

open study

Intravenous Brincidofovir as an Antiviral for Treatment of Progressive Multifocal Leukoencephalopat1
National Institute of Neurological Disorders and Stroke (NINDS) Progressive Multifocal Leukoencephalopathy
Background: Progressive multifocal leukoencephalopathy (PML) is a rare and often fatal brain infection caused by the JC virus. The JC virus is common. More than half of adults have been exposed to it. Most people do not get sick from the JC virus, but in people with weakened immune systems, it can1 expand

Background: Progressive multifocal leukoencephalopathy (PML) is a rare and often fatal brain infection caused by the JC virus. The JC virus is common. More than half of adults have been exposed to it. Most people do not get sick from the JC virus, but in people with weakened immune systems, it can cause PML. Brincidofovir (BCV) is an antiviral drug approved to treat smallpox. Researchers want to know if it can help people with PML. Objective: To test BCV in people with PML. Eligibility: People aged 18 years or older with PML. Design: Participants will be screened. They will have a physical exam with blood tests. They will have an imaging scan of the brain with contrast dye. They will have a lumbar puncture (spinal tap): A thin needle will be inserted into their lower back to draw out a sample of the fluid around their spinal cord. BCV will be given through a tube attached to a needle inserted into a vein. Participants will receive the drug 2 times a week for 4 weeks (this is 1 cycle). If the drug is helping them, they may have up to 3 drug cycles (12 weeks). Imaging scans, spinal taps, and other tests will be repeated after every 4 weeks of treatment. Participants will have 6 follow-up visits in 1 year after treatment ends. The imaging scan, spinal tap, and other tests will be repeated at each visit.

Type: Interventional

Start Date: May 2026

open study

Natural History of Inflammatory Muscle Diseases
National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) Inflammation In Skeletal Muscle
Objective: To collect information and biospecimens (such as blood, muscle, and skin samples) that will be used to research causes and treatments of inflammatory muscle diseases. Eligibility: People aged 12 years and older with suspected or confirmed inflammatory muscle disease. Healthy volunteer1 expand

Objective: To collect information and biospecimens (such as blood, muscle, and skin samples) that will be used to research causes and treatments of inflammatory muscle diseases. Eligibility: People aged 12 years and older with suspected or confirmed inflammatory muscle disease. Healthy volunteers aged 18 years and older are also needed. Design: Participants will have at least 1 clinic visit. Each visit will last 4 to 8 hours. Some may return for additional visits. All participants will undergo these procedures (unless they are unable to): - Physical exam, including blood and urine tests. - Magnetic resonance imaging (MRI) scan of the thigh. Participants will lie still on a table with padding around 1 thigh. The table will slide into a tube. The scan will last for approximately 40 minutes. Some procedures are optional: - Muscle biopsy: An area of skin will be numbed. A quarter-inch cut will be made. Several pieces of muscle tissue, about the size of grains of rice, will be removed. - Skin biopsy: An area of skin will be numbed. A piece of skin about a quarter inch in diameter will be removed. - Lymph node biopsy: A small sample of fluid or tissue from a lymph node will taken to check for infection. - Genetic testing. Some of the samples collected may be used for genetic testing.

Type: Observational

Start Date: Jun 2023

open study

Paradoxical Tuberculosis Reactions in Patients Without HIV Infection
National Institute of Allergy and Infectious Diseases (NIAID) Tuberculosis
Background: Most people with tuberculosis (TB) feel better after starting treatment. But for some people, the opposite happens. They may feel better at first, but then suddenly get worse. This is a paradoxical reaction. Researchers want to better understand what causes this reaction and what happe1 expand

Background: Most people with tuberculosis (TB) feel better after starting treatment. But for some people, the opposite happens. They may feel better at first, but then suddenly get worse. This is a paradoxical reaction. Researchers want to better understand what causes this reaction and what happens after someone has it. Objective: To learn about paradoxical reactions to TB treatment. Eligibility: Adults 18 and older diagnosed with confirmed or suspected TB and currently on treatment for at least 2 weeks, with or without signs/symptoms of a paradoxical inflammatory reaction. Design: Participants will be screened with a physical exam and medical history. They will give blood and urine samples. Eligible participants will visit either the NIH Clinical Center or the Mexico Clinic sites 3 times over 6 to 18 months. Each visit will take 7 hours to complete; visits may be scheduled over more than 1 day. Participants may have more visits if their TB symptoms change. Participants will give blood, urine, and sputum samples. They will have adverse event assessments. They will have 2 to 3 positron emission tomography/computed tomography (PET/CT) scans. PET/CT scans make pictures of the inside of the body. For this, participants will lie on a table that slides into a donut-shaped scanner. They will get a small amount of radioactive dye through an IV, which is a small plastic tube placed in a vein in the arm using a needle. Participants may have optional apheresis at the NIH site only. For this, blood is taken from a needle in one arm. White blood cells are separated from the rest of the blood. The rest of the blood is returned through a needle in the other arm.

Type: Observational

Start Date: Dec 2019

open study

Oral Bacteria and Immune System Problems Involved in Gum Disease (Periodontitis)
National Institute of Dental and Craniofacial Research (NIDCR) Immunosuppression Periodontal Disease Healthy Subjects Healthy Volunteer
Background: - Gum disease is a condition in which the tissue around the tooth root becomes swollen and infected. This condition can cause tooth loss if it is not treated. Who gets gum disease and how bad it will be depends on (1) the different bacteria in the mouth and (2) how the immune system of1 expand

Background: - Gum disease is a condition in which the tissue around the tooth root becomes swollen and infected. This condition can cause tooth loss if it is not treated. Who gets gum disease and how bad it will be depends on (1) the different bacteria in the mouth and (2) how the immune system of an individual handles these bacteria. Researchers want to look at the oral bacteria and genetic immune problems of different people to learn how these affect gum disease and other conditions of the mouth. Objectives: - To study how immune system problems may lead to problems in the mouth, including gum disease. Eligibility: - Children and adults at least 7 years of age who have genetic problems with their immune system. - Healthy adults that have periodontal disease - Health adults that do not have periodontal disease Design: - This study will involve a screening visit and a study visit. - Participants will be screened with a medical history, blood work and a full oral and dental exam, including dental x-rays and photos. - The study visit will involve collection of blood, urine, and other samples, including saliva, plaque, and gum swabs. Any abnormal tissue will sampled for a biopsy. Additional oral and dental exams will be performed. Participants will also answer questions about any current medical or dental problems.

Type: Observational

Start Date: Oct 2012

open study