Clinical Trials

NCT00553410 | COMPLETED | PHASE3

4884 participants

Letrozole in Preventing Cancer in Postmenopausal Women Who Have Received 4-6 Years of Hormone Therapy for Hormone Receptor-Positive, Lymph Node-Positive, Early-Stage Breast Cancer

Study Type:

INTERVENTIONAL

Last Updated:

2026-09-01

Start Date:

2007-08-31

Completion:

2018-04-30

Conditions

• Breast Cancer

Interventions

• DRUG

Results Available

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

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