Clinical Trials Updated in 2026

NCT00029965 | RECRUITING

200 participants

Natural History of Glycosphingolipid Storage Disorders and Glycoprotein Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2002-02-06

Conditions

Neurological Regression
Myoclonus
Cherry Red Spot
Brain Atrophy

No Results Yet

NCT00029445 | RECRUITING

500 participants

Leukapheresis to Obtain Plasma or Lymphocytes for Studies of HIV-infected Patients, Including Long-term Non-progressors

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-08-09

Conditions

HIV

No Results Yet

NCT00027326 | ENROLLING_BY_INVITATION

1000 participants

Collection of Blood and Urine From Patients Undergoing Radiation Therapy

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-12-02

Conditions

Carcinoma
Cancer
Tumor

No Results Yet

NCT00027274 | RECRUITING

4000 participants

Cancer in Inherited Bone Marrow Failure Syndromes

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-11-28

Conditions

Diamond Blackfan Anemia
Dyskeratosis Congenita
Fanconi Anemia
Shwachman Diamond Syndrome
Inherited Bone Marrow Failure Syndrome, Aplastic Anemia

No Results Yet

NCT00026650 | RECRUITING

700 participants

Evaluation of Late Effects and Natural History of Disease in Patients Treated With Radiotherapy

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2000-02-14

Conditions

Cancer

No Results Yet

NCT00025935 | RECRUITING

2350 participants

Studies of Brain Function and Course of Illness in Pediatric Bipolar Disorder

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2002-01-01

Conditions

Mood Disorder

Interventions

DRUG

No Results Yet

NCT00024479 | RECRUITING

7500 participants

Studies of the Natural History of Rheumatic Diseases

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-10-03

Conditions

Rheumatic Diseases
Arthritis

No Results Yet

NCT00023049 | COMPLETED

335 participants

Genetic Analysis of Hereditary Disorders of Hearing and Balance

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2002-12-23

Conditions

Sensorineural Hearing Loss
Hearing Disorder
Vestibular Disease

No Results Yet

NCT00018889 | RECRUITING

2500 participants

Phenotype/Genotype Correlations in Movement Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-10-22

Conditions

Movement Disorder

No Results Yet

NCT00018044 | RECRUITING

1000 participants

Study of Mycobacterial Infections

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-01-01

Conditions

Mycobacterium Infections

Interventions

DRUG

No Results Yet

NCT00013559 | COMPLETED

593 participants

Natural History Study of Smith-Magenis Syndrome

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-03-19

Conditions

Smith-Magenis Syndrome (SMS)

No Results Yet

NCT00006518 | RECRUITING

1029 participants

Specimen Collections From Participants With HIV Infection, KSHV Infection, Viral-Related Pre-malignant Lesions and Cancer

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2000-12-06

Conditions

HIV
Kaposi's Sarcoma
Lymphomas
Multicentric Castleman's Disease
Primary Effusion Lymphoma

No Results Yet

NCT00006150 | RECRUITING

600 participants

Natural History, Management, and Genetics of the Hyperimmunoglobulin E Recurrent Infection Syndrome (HIES)

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2000-08-10

Conditions

Infections
Pneumonia
Immune System Diseases
STAT3 Transcription Factor
Job Syndrome

No Results Yet

NCT00005927 | COMPLETED

690 participants

Study of Adrenal Gland Tumors

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2002-07-01

Conditions

Adrenal Gland Neoplasm

No Results Yet

NCT00005909 | RECRUITING

300 participants

Study of Alkaptonuria

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2000-06-21

Conditions

Alkaptonuria

No Results Yet

NCT00005902 | ACTIVE_NOT_RECRUITING

250 participants

Study of Brain and Spinal Cord Tumor Growth and Cyst Development in Patients With Von Hippel Lindau Disease

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2001-02-15

Conditions

Hemangioblastoma
Hippel Lindau Disease

No Results Yet

NCT00004577 | RECRUITING

1100 participants

Study of New Magnetic Resonance Imaging Methods of the Brain

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2000-07-01

Conditions

Healthy Volunteer
Magnetic Resonance Imaging
Healthy
fMRI
Brain Mapping
Adult

No Results Yet

NCT00001979 | RECRUITING

2000 participants

Immune System Related Kidney Disease

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1992-06-25

Conditions

Kidney Disease
Nephrotic Syndrome

No Results Yet

NCT00001975 | RECRUITING

400 participants

Study of Skin Tumors in Tuberous Sclerosis

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 2000-01-26

Conditions

Tuberous Sclerosis

No Results Yet

NCT00001813 | COMPLETED

709 participants

Examination of Clinical and Laboratory Abnormalities in Patients With Defective DNA Repair: Xeroderma Pigmentosum, Cockayne Syndrome, or Trichothiodystrophy

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1999-05-10

Conditions

Cockayne Syndrome
Skin Neoplasms
Xeroderma Pigmentosum
Trichothiodystrophy Syndromes
Genodermatosis

No Results Yet

NCT00001721 | COMPLETED

130 participants

Study of Smith-Lemli-Opitz Syndrome

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1998-09-13

Conditions

Smith-Lemli-Opitz Syndrome

Interventions

DRUG

No Results Yet

NCT00001645 | RECRUITING

800 participants

Evaluation, Treatment and Monitoring of Patients With a Known or Suspected Parasitic Infection

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1998-10-10

Conditions

Malaria
Intestinal Worms
GI Protozoa
Echiniococcus
Strongyloides

No Results Yet

NCT00001620 | ENROLLING_BY_INVITATION

10000 participants

Screening for Hematology Branch Protocols

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1996-12-31

Conditions

Hematologic Disease and Disorders
Donors
Healthy Volunteer

No Results Yet

NCT00001539 | RECRUITING

700 participants

A Comprehensive Clinical, Microbiological and Immunological Assessment of Patients With Suspected Post Treatment Lyme Disease Syndrome and Selected Control Populations

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1996-06-13

Conditions

Lyme Disease

No Results Yet

NCT00001471 | COMPLETED

386 participants

Tissue Biopsy and Imaging Studies in HIV-Infected Patients

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1994-11-30

Conditions

HIV
ICL
Healthy Volunteers

No Results Yet

NCT00001405 | RECRUITING

850 participants

Recruitment and Apheresis Collection of Peripheral Blood Hematopoietic Stem Cells, Mononuclear Cells and Granulocytes

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1994-02-27

Conditions

Granuloma
Granulomatous Disease, Chronic
Leukocyte Disease
Genetic Disease, X-Linked
Genetic Disease, Inborn

No Results Yet

NCT00001403 | RECRUITING

1500 participants

Study of Proteus Syndrome and Related Congenital Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1994-04-27

Conditions

Proteus Syndrome
PIK3CA Related Overgrowth Spectrum

No Results Yet

NCT00001393 | COMPLETED

616 participants

Genetic Markers for Focal Segmental Glomerulosclerosis

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1996-04-15

Conditions

Focal Segmental Glomerulosclerosis
HIV-Associated Focal Segmental Glomerulosclerosis

No Results Yet

NCT00001373 | RECRUITING

5000 participants

Familial Mediterranean Fever and Related Disorders: Genetics and Disease Characteristics

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1994-03-10

Conditions

Familial Mediterranean Fever (FMF)
Autoinflammation
Periodic Fever
Fever
Genetic Diseases
ROSAH
ALPK1

No Results Yet

NCT00001352 | RECRUITING

800 participants

Fungal Infection Susceptibility

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1993-04-01

Conditions

Cryptococcal Infection
Cryptococcal Pneumonia
Pulmonary Cryptococcosis
Cryptococcal Meningitis
Cryptococcosis

No Results Yet

NCT00001309 | COMPLETED | PHASE1

23 participants

The Body's Affect on Vitamin C

Study Type:: INTERVENTIONAL
Last Updated:: 2026-08-31
Start Date:: 1997-01-23
Completion:: 1999-08-25

Conditions

Healthy Volunteers

Interventions

OTHER

No Results Yet

NCT00001281 | RECRUITING

2419 participants

Studies of the Pathogenesis of HIV Infection in Human Peripheral Blood Cells and/or Body Fluids in People Living With and Without HIV

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1993-03-09

Conditions

HIV
Immunodeficiencies
Infectious Diseases

No Results Yet

NCT00001276 | RECRUITING

1500 participants

Diagnosing and Treating Low Blood Sugar Levels

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1991-05-21

Conditions

Hypoglycemia
Insulinoma

No Results Yet

NCT00001247 | COMPLETED

648 participants

Inpatient Evaluation of Adults With Schizophrenia

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1989-09-15

Conditions

Schizophrenia

Interventions

DRUG

No Results Yet

NCT00001244 | RECRUITING

500 participants

Immune Regulation in Patients With Common Variable Immunodeficiency and Related Inborn Errors of Immunity (IEI)

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1990-01-15

Conditions

XLA
CVID
Yao Syndrome
Blau Syndrome

No Results Yet

NCT00001231 | COMPLETED

1158 participants

Perimenopause-Related Mood and Behavioral Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1989-03-06

Conditions

Mood Disorder

No Results Yet

NCT00001215 | ENROLLING_BY_INVITATION

1000 participants

Genetic Studies of Lysosomal Storage Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1995-03-08

Conditions

Lysosomal Storage Disorders
Gaucher Disease
Parkinson Disease

No Results Yet

NCT00001208 | RECRUITING

2000 participants

Botulinum Toxin for the Treatment of Involuntary Movement Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1989-10-26

Conditions

Movement Disorders

No Results Yet

NCT00001205 | RECRUITING

500 participants

Natural History of Treated Neurocysticercosis and Long-Term Outcomes

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1985-10-07

Conditions

Cysticercosis
Neurocysticercosis

No Results Yet

NCT00001204 | COMPLETED

73 participants

Cardiovascular Evaluation of Patients With High Cholesterol and Normal Volunteers

Study Type:: OBSERVATIONAL
Last Updated:: 2026-08-31
Start Date:: 1992-01-07

Conditions

Homozygous Familial Hypercholesterolemic

No Results Yet