Clinical Trials Updated in 2026

NCT00471250 | RECRUITING

550 participants

Collection of Lung Fluid and Tissue Samples for Research

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-08-17

Conditions

Leukocyte Disorders
Respiratory Tract Diseases
Bronchoscopy

No Results Yet

NCT00453505 | COMPLETED | EARLY_PHASE1

976 participants

Modulation of Motor Function by Stimulation of the Central and Peripheral Nervous System

Study Type:: INTERVENTIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-01-14
Completion:: 2019-11-08

Conditions

Motor Function of Healthy Physiology

Interventions

DEVICE

No Results Yet

NCT00450788 | COMPLETED

50045 participants

Esophageal Cancer in Northeastern Iran

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-03-15

Conditions

Esophageal Cancer
GI Disease

No Results Yet

NCT00442195 | RECRUITING

1000 participants

Collection and Analysis of Blood, Bone Marrow, and Buccal Mucosa Samples From Healthy Volunteers

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-03-03

Conditions

Healthy Volunteers

No Results Yet

NCT00428987 | RECRUITING

2000 participants

Physical and Behavioral Traits of Overweight and Obese Adults

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-03-08

Conditions

Obesity
Healthy Volunteers

No Results Yet

NCT00404560 | RECRUITING

2000 participants

Detection and Characterization of Infections and Infection Susceptibility

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-01-02

Conditions

Immune Deficiencies

No Results Yet

NCT00397280 | RECRUITING

750 participants

Immune Cell Response to Stimuli

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2009-07-13

Conditions

Inflammation

No Results Yet

NCT00361829 | COMPLETED

2355 participants

The Influence of Maternal Age, Employment Status, and Parenthood Status on Children's Cognitive Development

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 1988-02-17

Conditions

Child Development

No Results Yet

NCT00359684 | RECRUITING

330 participants

Use of Cysteamine in the Treatment of Cystinosis

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 1979-01-04

Conditions

Cystinosis

Interventions

DRUG

No Results Yet

NCT00353782 | RECRUITING

2000 participants

Causes and Natural History of Dyslipidemias

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-10-14

Conditions

Hypercholesterolemia
Atherosclerosis

No Results Yet

NCT00353158 | COMPLETED | PHASE1

62 participants

A Pilot of Pediatric/Adult Study of Gene Expression Profiling and Clinical Characterization of Phototoxicity

Study Type:: INTERVENTIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-05-25
Completion:: 2011-09-20

Conditions

Healthy Volunteers
Fungal Infections
Bacterial Infections

Interventions

DRUG

No Results Yet

NCT00352924 | ACTIVE_NOT_RECRUITING

89655 participants

Agriculture Health Study

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 1993-04-30

Conditions

Prostate Cancer
Pesticide Exposures
Lymphoma
Multiple Myeloma

No Results Yet

NCT00342732 | COMPLETED

669 participants

The Food Intake Phenotype: Assessing Eating Behavior and Food Preferences as Risk Factors for Obesity

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 1999-11-24

Conditions

Obesity
Overweight
Overnutrition

No Results Yet

NCT00341679 | COMPLETED

719 participants

Studies of the Natural History and Pathogenesis of Autoimmune/Connective Tissue Diseases

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2005-07-13

Conditions

Autoimmune/Connective Tissue Diseases
Idiopathic Inflammatory Myopathies
Polymyositis
Dermatomyositis

No Results Yet

NCT00339495 | ACTIVE_NOT_RECRUITING

154900 participants

Prostate Lung Colorectal and Ovarian (PLCO) Cancer Screening Trial

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 1998-05-01
Completion:: 2026-12-31

Conditions

Cancer
Death

No Results Yet

NCT00246857 | RECRUITING

5000 participants

Screening Protocol for Genetic Diseases of Lymphocyte Homeostasis and Programmed Cell Death

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2007-02-12

Conditions

Primary Immune Deficiency

No Results Yet

NCT00242723 | RECRUITING

1559 participants

Evaluation of Cell Changes in Blood and Tissue in Cancers of the Lung, Esophagus and Lung Lining

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2005-11-09

Conditions

Thoracic Cancers
Malignant Pleural Mesotheliomas NOS
Lung Cancer NOS
Esophageal Cancers NOS
Cancers of Non Thoracic Origin With Metastases to the Lungs or Pleura
Thoracic Malignancies

No Results Yet

NCT00233272 | RECRUITING

10000 participants

Baltimore Longitudinal Study of Aging

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2014-02-03

Conditions

Aging

No Results Yet

NCT00182858 | RECRUITING

5000 participants

Tissue Procurement for Biomedical Research

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-06-26
Completion:: 2028-12-31

Conditions

Normal Volunteers

No Results Yet

NCT00128973 | RECRUITING

3500 participants

Evaluation of Patients With Immune Function Abnormalities

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2005-09-19

Conditions

Chronic Granulomatous Disease (CGD)
X-Linked Severe Combined Immune Deficiency (XSCID)
Leukocyte Adhesion Deficiency 1 (LAD)
Graft Versus Host Disease (cGvHD)

No Results Yet

NCT00106925 | RECRUITING

1000 participants

Long-term Evaluation and Follow-up Care of Patients Treated With Stem Cell Transplants

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2005-04-22

Conditions

Graft-versus-leukemia
Graft vs Host Disease
Graft Rejection

No Results Yet

NCT00104325 | RECRUITING

10000 participants

Cytapheresis of Volunteer Donors

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-01-30

Conditions

Healthy Volunteers

No Results Yet

NCT00092235 | RECRUITING

650 participants

Natural History Study of Clinical and Biological Factors Determining Outcomes in Chronic Graft-Versus-Host Disease

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2004-10-26

Conditions

Chronic Graft vs. Host Disease

No Results Yet

NCT00091871 | RECRUITING

50 participants

A Longitudinal Study of Familial Hypereosinophilia (FE): Natural History and Markers of Disease Progression

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2005-06-08

Conditions

Eosinophilia
Hypereosinophilic Syndrome

No Results Yet

NCT00090662 | RECRUITING

150 participants

Collection of Data and Samples From Healthy Donors for Use in Translational Research

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2004-12-09

Conditions

Healthy Volunteer

No Results Yet

NCT00086567 | COMPLETED

119 participants

Predictors of Relapse of Ovarian, Peritoneal, and Fallopian Tube Cancers

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2005-12-12

Conditions

Fallopian Tube Cancer
Peritoneal Neoplasms
Epithelial Ovarian Cancer

No Results Yet

NCT00084305 | ACTIVE_NOT_RECRUITING

315 participants

Analysis of Specimens From Individuals With Pulmonary Fibrosis

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2004-06-09

Conditions

Pulmonary Fibrosis
Healthy Volunteers
Hermansky-Pudlak Syndrome (HPS)

No Results Yet

NCT00081523 | RECRUITING

3500 participants

Natural History of Sickle Cell Disease

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2004-04-29

Conditions

Pain Crisis

No Results Yet

NCT00067054 | RECRUITING

3000 participants

Apheresis and Specimen Collection Procedures to Obtain Plasma, Peripheral Blood Mononuclear Cells (PBMCs) and Other Specimens for Research Studies

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-09-10

Conditions

Sample Collection

No Results Yet

NCT00060775 | COMPLETED

550 participants

The Psychobiology of Childhood Temperament

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-11-10

Conditions

Developmental Psychology

No Results Yet

NCT00055172 | RECRUITING

100 participants

Genetic Basis of Immunodeficiency

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2004-04-05

Conditions

Severe Combined Immunodeficiency

No Results Yet

NCT00055029 | COMPLETED

351 participants

Clinical and Genetic Studies of X-Linked Juvenile Retinoschisis

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-05-19

Conditions

Retinoschisis

No Results Yet

NCT00047996 | ENROLLING_BY_INVITATION

2000 participants

Blood Collection for Research Related to Certain Diseases Involving Blood Vessels

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2002-11-04

Conditions

Sickle Cell Disease

No Results Yet

NCT00039676 | ACTIVE_NOT_RECRUITING

1836 participants

Clinical, Laboratory and Epidemiologic Characterization of Individuals and Families at High Risk of Hematologic Cancer

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2002-07-08

Conditions

Waldenstrom Macroglobulinemia
Chronic Lymphocytic Leukemia
Hodgkin Disease
NonHodgkin Lymphoma
Mixed Lymphoproliferative Disease

No Results Yet

NCT00034424 | COMPLETED

749 participants

Cause of Familial Testicular Cancer

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2003-01-13

Conditions

Testicular Cancer

No Results Yet

NCT00034216 | RECRUITING

1750 participants

Collection of Blood From Patients With Cancer

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2002-07-16

Conditions

Prostate Cancer
Breast Cancer
Colon Cancer
Lung Cancer
Liver Cancer

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:: 2026-09-01
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:: 2026-09-01
Start Date:: 2001-12-02

Conditions

Carcinoma
Cancer
Tumor

No Results Yet

NCT00024804 | RECRUITING

1000 participants

A Natural History Study of Bone and Mineral Disorders

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2001-11-19

Conditions

Tumor Induced Osteomalcia
Osteomalacia
Familial Tumoral Calcinosis

No Results Yet

NCT00024479 | RECRUITING

7500 participants

Studies of the Natural History of Rheumatic Diseases

Study Type:: OBSERVATIONAL
Last Updated:: 2026-09-01
Start Date:: 2001-10-03

Conditions

Rheumatic Diseases
Arthritis

No Results Yet