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 6 of 11

COMPLETED Phase 3

Effectiveness of Etanercept for Idiopathic Pneumonia Syndrome Following Stem Cell Transplantation (BMT CTN 0403)

NCT00421174

TERMINATED Phase 2

Drug Study of Albuterol to Treat Acute Lung Injury

NCT00434993

TERMINATED

Establishing a Repository of Blood and DNA Samples From People With Sickle Cell Disease (Comprehensive Sickle Cell Centers Collaborative Genotype-Phenotype Database and Sample Repository)

NCT00528203

COMPLETED Phase 2

Niacin to Improve Blood Flow in People With Sickle Cell Disease

NCT00508989

COMPLETED

Genes Causing Ebstein's Anomaly

NCT00497705

COMPLETED

Pulmonary Hypertension, Hypoxia and Sickle Cell Disease

NCT00495638

COMPLETED Phase 2

Peptide Vaccinations to Treat Patients With Low-Risk Myeloid Cancers

NCT00488592

TERMINATED Phase 2

Sildenafil Therapy for Pulmonary Hypertension and Sickle Cell Disease

NCT00492531

COMPLETED Phase 1

Imaging of Totally Blocked Arteries

NCT00459446

COMPLETED Phase 2

Stem Cell Transplantation for Patients With Cancers of the Blood

NCT00467961

COMPLETED Phase 2

Effectiveness of an Anger and Stress Management Program on Reducing Blood Pressure Levels in Youth

NCT00508612

COMPLETED Phase 1

Model System for Transient Forearm Blood Vessel Dysfunction

NCT00453531

COMPLETED

Using Differences in Peripheral Blood Leukocyte Gene Expression to Determine Cardiovascular Disease Risk

NCT00613158

COMPLETED Phase 2

Wilm's Tumor 1 (WT1) Peptide Vaccine for High Risk Hematologic Malignancy

NCT00433745

COMPLETED

Role of p53 Gene in Metabolism Regulation in Patients With Li-Fraumeni Syndrome

NCT00406445

COMPLETED

Collection of Heart Tissue Sample During Open Heart Surgery

NCT00423553

COMPLETED

Validation of MRI Measurement of Cardiac Blood Flow

NCT00417625

COMPLETED Phase 2

Rilonacept to Improve Artery Function in Patients With Atherosclerosis

NCT00417417

COMPLETED Phase 2

Dexamethasone to Prevent Oral Chronic Graft-versus-Host Disease

NCT00391170

COMPLETED

Genetic Disorders of Mucociliary Clearance in Nontuberculous Mycobacterial Lung Disease

NCT00368446

COMPLETED Phase 2

Alemtuzumab (Campath) to Treat T-Large Granular Lymphocyte Leukemia

NCT00345345

COMPLETED NA

Catheter-Based Treatment of Cardiovascular Disease

NCT00380016

COMPLETED

Role of Helicobacter Pylori and Its Toxins in Lung and Digestive System Diseases

NCT00366509

COMPLETED Phase 2

Methods to Enhance the Safety and Effectiveness of Stem Cell Transplants

NCT00378534

COMPLETED Phase 1

Lower But More Frequent Dose Rituximab to Treat Chronic Lymphocytic Leukemia

NCT00366418

COMPLETED

Predicting Response to Cardiac Resynchronization Therapy in Heart Failure

NCT00359372

COMPLETED

Cardiovascular Magnetic Resonance Imaging of Pediatric Normal Volunteers

NCT00353899

COMPLETED Phase 1

Cardiopulmonary Function Assessment and NO-Based Therapies for Patients With Hemolysis-Associated Pulmonary Hypertension

NCT00352430

COMPLETED

Genetic and Nutritional Causes of Heart Birth Defects

NCT00368732

COMPLETED

The Link Between Anemia and Deficits in Memory and Attention in Individuals With Sickle Cell Disease

NCT00451919

COMPLETED

Lifetime Risk for Cardiovascular Disease Among Non-White Ethnic Groups

NCT00377702

COMPLETED Phase 1

An Evaluation of Safety and Efficacy of Escalating Doses of AMD3100 to Mobilize CD34+ Cells in Healthy Volunteers

NCT00322127

COMPLETED

Telomere Repair Gene Mutation in Inflammatory Bowel Disease

NCT00353639

TERMINATED Phase 1

Sildenafil to Treat HIV-Associated Pulmonary Hypertension

NCT00327080

COMPLETED

Endothelial Progenitor Cells and Nitric Oxide in Cardiac Rehabilitation Program Participants

NCT00308633

TERMINATED Phase 4

Childhood Asthma Research and Education (CARE) Network Trial - Montelukast or Azithromycin for Reduction of Inhaled Corticosteroids in Childhood Asthma (MARS)

NCT00471809

COMPLETED Phase 2

Atorvastatin to Treat Pulmonary Sarcoidosis

NCT00279708

COMPLETED Phase 1

Safety of Peptide Vaccination for Patients With Myelodysplastic Syndrome

NCT00270452

COMPLETED Phase 1

Hydroxyurea and Erythropoietin to Treat Sickle Cell Anemia

NCT00270478

COMPLETED Phase 3

Rituxan/BEAM vs Bexxar/BEAM in Autologous Hematopoietic Stem Cell Transplant for Non-Hodgkin's Lymphoma (BMTCTN0401)

NCT00329030

COMPLETED Phase 2

Three Immunosuppressive Treatment Regimens for Severe Aplastic Anemia

NCT00260689

COMPLETED Phase 1

The Role of Nitrite in Preconditioning Mediated Tolerance to Ischemic Stress

NCT00250185

COMPLETED Phase 2

Effect of Regular Exercise on Vascular Function and Cardiovascular Risk in a Sedentary Work Force

NCT00246883

COMPLETED Phase 2

Alemtuzumab to Treat Severe Aplastic Anemia

NCT00195624

COMPLETED Phase 2

Treatment for Acute Graft-Versus-Host Disease (BMT CTN 0302)

NCT00224874

COMPLETED Phase 2

Rituximab to Treat Moderate Aplastic Anemia, Pure Red Cell Aplasia, or Diamond Blackfan Anemia

NCT00229619

COMPLETED

Genomics of In-Stent Restenosis

NCT00341562

COMPLETED Phase 3

Eculizumab to Treat Paroxysmal Nocturnal Hemoglobinuria

NCT00130000

COMPLETED Phase 2

A Pilot Study of Alemtuzumab (Campath[R]) in Patients With Myelodysplastic Syndrome

NCT00217594

COMPLETED Phase 2

Acute Myeloid Leukemia T Cell Depletion to Improve Transplants in Adults With Acute Myeloid Leukemia (BMT CTN 0303)

NCT00201240

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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.