National Heart, Lung, and Blood Institute (NHLBI)

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, National Heart, Lung, and Blood Institute (NHLBI) sits in the top decile of US sponsors by registered trial count (#73 of 15,742 sponsors by registered trial count).

501 total trials 62 currently recruiting 381 completed early-phase tilt top decile by trial count

National Heart, Lung, and Blood Institute (NHLBI): 501 sponsored US clinical trials, 62 recruiting.

National Heart, Lung, and Blood Institute (NHLBI) sponsors 501 registered US clinical trials on ClinicalTrials.gov, 62 of them currently recruiting, and 381 completed. 33 of these trials are in Phase 3-4 (later-stage) and 205 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Atherosclerosis, with 12 trials.

Top-decile sponsor footprint

National Heart, Lung, and Blood Institute (NHLBI) ranks in the top decile of sponsors by registered trial count (#73 of 15,742 sponsors by registered trial count). Volume at this scale usually reflects a long institutional pipeline, read phase tilt and therapeutic areas below before treating it as current-year activity.

Trial completion reliability score

C 68/100

381 of 417 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (91.4%), vs. national p10 68.4% / p90 100% among 1,234 sponsors with at least 10 decided trials. Still-open trials (Recruiting, Active-not-recruiting, Not-yet-recruiting) are excluded since they have not reached an outcome yet.

Open and recent trials

501 total, page 5 of 11

COMPLETED Phase 1

A Pilot Study of Fludarabine Plus Cyclophosphamide in Refractory Severe Aplastic Anemia

NCT01187017

COMPLETED

Effects of Rosuvastatin on the Immune System in Healthy Volunteers With Normal Cholesterol

NCT01200836

COMPLETED Phase 2

Ofatumumab-based Induction Chemoimmunotherapy in Previously Untreated Patients With CLL/SLL

NCT01145209

COMPLETED

A Study of the Kinetics of Lymphoid Cells in Patients With Monoclonal B-cell Lymphocytosis (MBL), Chronic Lymphocytic Leukemia (CLL) or Small Lymphocytic Lymphoma (SLL), Mantle Cell Lymphoma (MCL) and Healthy Volunteers

NCT01117142

COMPLETED Phase 1

Gardasil Vaccination in Post Stem Cell Transplant Patients

NCT01092195

COMPLETED Phase 3

Stem Cell Transplant With Lenalidomide Maintenance in Patients With Multiple Myeloma (BMT CTN 0702)

NCT01109004

COMPLETED Phase 2

Evaluation of Oral Alpha-Cyclodextrin for Decreasing Serum Cholesterol

NCT01131299

COMPLETED

New Techniques to Evaluate Mitral Regurgitation

NCT01063322

TERMINATED Phase 3

Statins for Acutely Injured Lungs From Sepsis

NCT00979121

COMPLETED

Cardiac MRI for Patients Enrolled in INFUSE-AMI

NCT01059214

COMPLETED

Novel Influenza A (H1N1) Surveillance Registry

NCT01046331

COMPLETED

Characterization of the Innate Immune Response in Healthy NIH Employees at Baseline and After Immunization With the H1N1 Vaccine

NCT00995527

COMPLETED Phase 2

A Randomized, Placebo-Controlled, Double-Blind Pilot Study of Pioglitazone Hydrochloride in Severe, Refractory Asthma

NCT00994175

COMPLETED

Cellular and Molecular Characterization of the Immune Response in Healthy NIH Employees atBaseline, and After Immunization With the H1N1 or Seasonal Influenza Vaccines

NCT01191853

COMPLETED

Collection of Blood, Bone Marrow, and Buccal Mucosa Samples From Healthy Volunteers for Center for Human Immunology, Autoimmunity, and Inflammatory Diseases (CHI) Laboratory Research Studies

NCT00995891

COMPLETED Phase 3

Clarification of Optimal Anticoagulation Through Genetics

NCT00839657

COMPLETED Phase 2

Horse ATG/CsA in Aplastic Anemia Patients Unresponsive to or With a Suboptimal Response to Rabbit ATG/CsA Treatment

NCT00944749

COMPLETED

Screening Protocol for Subjects Being Evaluated for Center for Human Immunology, Autoimmunity, and Inflammatory Diseases (CHI) Protocols

NCT00968084

COMPLETED

X-ray Fluoroscopy Fused With Computed Tomography (XFC) Technical Development

NCT00965679

COMPLETED

Comparison of Cardiac Computed Tomography and Vasodilator Stress Magnetic Resonance Imaging Perfusion in Patients With Prior Equivocal Stress Test for Detection of Coronary Artery Disease

NCT00929227

COMPLETED Phase 2

A Pilot Study of the Thrombopoietin-Receptor Agonist Eltrombopag in Refractory Aplastic Anemia Patients

NCT00922883

COMPLETED Phase 1

A Pilot Study of the Safety and Activity of Escalating Doses of ON 01910.Na in Patients With Relapsed Mantle Cell Lymphoma, Multiple Myeloma, Chronic Lymphocytic Leukemia, and Related Lymphoid Malignancies

NCT00861510

COMPLETED NA

Mismatched Donor Lymphocyte Infusions for Relapsed Disease Following Allogeneic Stem Cell Transplantation

NCT00859586

COMPLETED

Pilot Study of Mitochondrial Biology in Human Platelets

NCT00833846

COMPLETED Phase 3

Long-term Oxygen Treatment Trial

NCT00692198

COMPLETED

Collection of Blood and Bone Marrow Samples From Select Patients With CML to Measure Minimal Residual Disease

NCT00819143

COMPLETED Phase 3

Improving Neurologic Outcomes in People With Diabetes Who Are Undergoing Heart Surgery

NCT00836329

COMPLETED

Neuropsychological Effects of Immunosuppressive Treatment in Subjects With Aplastic Anemia

NCT00767650

COMPLETED

Identification of Risk Factors for Arrhythmia in Children and Adolescents With Hypertrophic Cardiomyopathy

NCT00753233

COMPLETED

Long-Term Effects of Hydroxyurea in Children With Sickle Cell Anemia (The BABY HUG Follow-up Study)

NCT00890396

COMPLETED NA

Multisystemic Therapy to Reduce Health Disparities in Adolescents With Asthma

NCT00916240

COMPLETED Phase 1

Natural Killer Cells and Bortezomib to Treat Cancer

NCT00720785

TERMINATED

Transfusion-Associated Microchimerism in Previously Injured Individuals Who Received a Blood Transfusion

NCT00441779

TERMINATED

Technical Development of Interventional Cardiovascular Magnetic Resonance Imaging in Normal Volunteers

NCT00720460

COMPLETED

Screening for Subjects to Participate in Studies of Blood Disorders

NCT00695123

COMPLETED Phase 2

Stem Cell Transplant Using Peripheral and Cord Blood Stem Cells to Treat Severe Aplastic Anemia and Myelodysplastic Syndrome

NCT00604201

COMPLETED Phase 2

Effects of Worksite Wellness Interventions on Vascular Function, Insulin Sensitivity and High-Density Lipoprotein in Overweight or Obese Women

NCT00666172

COMPLETED

Evaluation of Toxicity From Stem Cell Transplant

NCT00631787

TERMINATED

Biomarkers in Exhaled Breath From Asthmatic Patients

NCT00635271

COMPLETED

Secondary Pulmonary Hypertension in Adults With Sickle Cell Anemia

NCT00011648

TERMINATED

Cardiovascular Disease Screening

NCT00483951

COMPLETED

Pilot Study to Assess the Proteome in Human Atrial Tissue

NCT00591903

COMPLETED Phase 3

Early Versus Delayed Enteral Feeding to Treat People With Acute Lung Injury or Acute Respiratory Distress Syndrome (The EDEN Study)

NCT00883948

TERMINATED Phase 3

Early Versus Delayed Enteral Feeding and Omega-3 Fatty Acid/Antioxidant Supplementation for Treating People With Acute Lung Injury or Acute Respiratory Distress Syndrome (The EDEN-Omega Study)

NCT00609180

COMPLETED

Relation of White Blood Cell Function to Diabetes

NCT00570154

COMPLETED

National Registry of Genetically Triggered Thoracic Aortic Aneurysms and Cardiovascular Conditions

NCT01322165

COMPLETED

Effect of Fasting on the Size of Abdominal Lymphatic Tumors in Women

NCT00552955

COMPLETED Phase 1

Safety of ON 01910.Na in Patients With Myelodysplasia

NCT00533416

COMPLETED NA

Longitudinal Studies of HIV-Associated Lung Infections and Complications (Lung HIV)

NCT00933595

COMPLETED

Association Between Abdominal Body Composition, Inflammation, and Risk for Cardiovascular Disease (The MESA ABD Study)

NCT00612365

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Phase Distribution

PhaseTrial count
Phase 1 87
Phase 2 118
Phase 3 29
Phase 4 4

What is open in the National Heart, Lung, and Blood Institute (NHLBI) pipeline

62 recruiting of 501 indexed (12% open); 381 completed (76%).

Phase mix: 33 late (III/IV) vs 205 early (I/II) (early-phase heavy).

Top condition: Atherosclerosis (12 trials), 9 others listed.

How open-pipeline share is computed

Recruiting share is recruiting_count divided by trial_count for this sponsor in the public registry export. Status can change between pulls; treat the figure as a research-attention snapshot, not product availability.

National Heart, Lung, and Blood Institute (NHLBI): open-pipeline peers nationwide

Peers matched on 501 registered trials and 12% open enrollment, not the therapeutic-area sidebar.

National Heart, Lung, and Blood Institute (NHLBI) sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot). 2×2 strategic matrix plotting 9 entities by Total trials (X) and Recruiting share (Y), with a crosshair dividing the plot into four quadrants. Higher volume & more openFocused & more openHigher volume, mostly closedSmaller & mostly closed 05001,0001,500 0%5%10%15%20% Total trials Recruiting share National Heart, Lung, and Blood Institute (NHLBI)H. Lee Moffitt Cancer Center and Research InstituteGilead SciencesNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)Beth Israel Deaconess Medical CenterBoston UniversityAstraZenecaDaiichi SankyoUniversity of Iowa
National Heart, Lung, and Blood Institute (NHLBI) sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot).

National Heart, Lung, and Blood Institute (NHLBI) sits at or above the median trial volume and at or above the median recruiting share among these 9 nationwide peers -- the two do not always move together.

Sponsors near 501 trials (± recruiting share)

Sponsors near 12% open enrollment (± trial volume)

What to do with this National Heart, Lung, and Blood Institute (NHLBI) page

501 registered trials is a research-attention snapshot, not an endorsement of National Heart, Lung, and Blood Institute (NHLBI) or any single study.

  • 62 of National Heart, Lung, and Blood Institute (NHLBI)'s trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • Atherosclerosis is the condition National Heart, Lung, and Blood Institute (NHLBI) studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Atherosclerosis trials
  • Bring the specific trial ID (NCT number) to your own doctor before enrolling, this page is a directory, not medical guidance. Read the trial-finding guide

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. National Heart, Lung, and Blood Institute (NHLBI) pipeline card: 501 registered trials from official public datasets. See our editorial standards & corrections policy, the methodology behind these numbers, the data changelog, or report a data error.