National Institute of Allergy and Infectious Diseases (NIAID)

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, National Institute of Allergy and Infectious Diseases (NIAID) sits in the top decile of US sponsors by registered trial count (#5 of 15,742 sponsors by registered trial count).

2,006 total trials 155 currently recruiting 1642 completed early-phase tilt top decile by trial count

National Institute of Allergy and Infectious Diseases (NIAID): 2,006 sponsored US clinical trials, 155 recruiting.

National Institute of Allergy and Infectious Diseases (NIAID) sponsors 2,006 registered US clinical trials on ClinicalTrials.gov, 155 of them currently recruiting, and 1,642 completed. 177 of these trials are in Phase 3-4 (later-stage) and 1,291 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is HIV Infections, with 195 trials.

Top-decile sponsor footprint

National Institute of Allergy and Infectious Diseases (NIAID) ranks in the top decile of sponsors by registered trial count (#5 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

1,642 of 1,802 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (91.1%), 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

2,006 total, page 6 of 41

TERMINATED Phase 2

A Study to Evaluate the Anti-inflammatory Effects of Letermovir (Prevymis) in Adults With Human Immunodeficiency Virus (HIV)-1 and Asymptomatic Cytomegalovirus (CMV) Who Are on Suppressive Antiretroviral Therapy, Plus Its Effect on Chronic Inflammation, HIV Persistence and Other Clinical Outcomes.

NCT04840199

COMPLETED Phase 2

COVID-19 Variant Immunologic Landscape Trial (COVAIL Trial)

NCT05289037

COMPLETED Phase 1

Phase I Norovirus Challenge Model

NCT04174560

COMPLETED Phase 1

A Phase 1 Trial to Evaluate CAP256V2LS in Healthy Adults

NCT04408963

COMPLETED Phase 1

Evaluating the Infectivity, Safety and Immunogenicity of a Recombinant Live-Attenuated Respiratory Syncytial Virus Vaccine, LID/ΔM2-2/1030s, in RSV-Seronegative Infants and Children 6 to 24 Months of Age

NCT04520659

COMPLETED

Community Dynamics of Malaria Transmission in Humans and Mosquitoes at Maferinyah Sub-Prefecture, Guinea

NCT04969913

COMPLETED Phase 1

Evaluation of Two Zika Viruses for Use in Controlled Human Infection Models (CHIM)

NCT05123222

COMPLETED Phase 1

Blood-Stage Plasmodium Vivax Cell Bank

NCT05095272

COMPLETED Phase 2

An Evaluation of Repeated Oral Doses of JNJ-64281802 Against DENV-3 Challenge

NCT05048875

COMPLETED Phase 2

COVID Protection After Transplant-Immunosuppression Reduction

NCT05077254

COMPLETED Phase 1

Empagliflozin as a Treatment for Severe Congenital Neutropenia Due to G6PC3 Deficiency

NCT05078879

COMPLETED Phase 1

A Clinical Trial to Evaluate the Safety, Tolerability, and Pharmacokinetics of PGDM1400LS Alone and in Combination With VRC07-523LS and PGT121.414.LS in Healthy, HIV-uninfected Adult Participants

NCT05184452

COMPLETED Phase 2

Trial to Evaluate the Safety and Immunogenicity of a Modified Vaccinia Ankara (MVA)-Based Anti-Cytomegalovirus (CMV) Vaccine (Triplex®)

NCT05099965

COMPLETED Phase 2

Mucosal Immunity Against Neisseria Gonorrhoeae After 4CMenB Vaccination

NCT04722003

TERMINATED Phase 2

Elotuzumab in Immunoglobulin G4-Related Disease (IgG4-RD)

NCT04918147

COMPLETED

Natural History of Systemic and Nasal Mucosal Immunity After Influenza Vaccination in a Pediatric Population

NCT04963166

TERMINATED Phase 3

PF-07304814 for Inpatients With COVID-19 (An ACTIV-3/TICO Treatment Trial)

NCT05780541

COMPLETED Phase 1

Trial to Evaluate L9LS in Healthy Adults

NCT05019729

TERMINATED Phase 1

Assess the Safety and Immunogenicity of One or Two Doses of Sing2016 M2SR H3N2 Influenza Vaccine

NCT04960397

COMPLETED Phase 2

The Safety of Administering a Second Dose of a COVID-19 mRNA Vaccine in Individuals Who Experienced a Systemic Allergic Reaction to an Initial Dose

NCT04977479

COMPLETED

Pharmacokinetic Properties of Antiretroviral and Anti-Tuberculosis Drugs During Pregnancy and Postpartum

NCT04518228

COMPLETED Phase 4

Vaccination for Recovered Inpatients With COVID-19 (VATICO)

NCT04969250

COMPLETED Phase 1

Influenza Challenge Study to Determine the Optimal Infection Dose and Safety of a Recombinant H3N2 (A/Texas/71/2017 (H3N2, Clade 3C3a) Influenza Strain

NCT04978454

TERMINATED Phase 2

COVID-19 Booster Vaccine in Autoimmune Disease Non-Responders

NCT05000216

COMPLETED Phase 2

COVID-19 Protection After Transplant Pilot Study

NCT04969263

COMPLETED Phase 2

ACTIV-5 / Big Effect Trial (BET-C) for the Treatment of COVID-19

NCT04988035

COMPLETED Phase 4

SARS-CoV-2 Immune Responses After COVID-19 Therapy and Subsequent Vaccine

NCT04952402

COMPLETED Phase 2

Elemental Diet for Treatment of Inflammatory Bowel Disease in Patients With Chronic Granulomatous Disease

NCT03983837

COMPLETED Phase 3

MP0420 for Inpatients With COVID-19 (An ACTIV-3/TICO Treatment Trial)

NCT05780463

COMPLETED Phase 1

Delayed Heterologous SARS-CoV-2 Vaccine Dosing (Boost) After Receipt of EUA Vaccines

NCT04889209

COMPLETED Phase 1

First-in-Human Clinical Trial of a Mosaic Quadrivalent Influenza Vaccine Compared With a Licensed Inactivated Seasonal QIV in Healthy Adults

NCT04896086

COMPLETED Phase 2

DOTS: Dalbavancin as an Option for Treatment of Staphylococcus Aureus Bacteremia

NCT04775953

TERMINATED Phase 1

Liver Transplantation With Tregs at UCSF

NCT03654040

COMPLETED Phase 3

Remdesivir for Severely Ill Inpatients With COVID-19 (An ACTIV-3b/TESICO Treatment Trial)

NCT06729593

COMPLETED

COVID-19 Vaccination and Outcomes in Individuals With and Without Immune Deficiencies and Dysregulations

NCT04852276

COMPLETED Phase 3

ACTIV-3b: Therapeutics for Severely Ill Inpatients With COVID-19

NCT04843761

COMPLETED Phase 3

Aviptadil for Severely Ill Inpatients With COVID-19 (An ACTIV-3b/TESICO Treatment Trial)

NCT06729606

COMPLETED

SARS-COV2 Pandemic Serosurvey in a Rare Disease Population

NCT04609085

TERMINATED Phase 2

COVID-19 and Anti-CD14 Treatment Trial

NCT04391309

COMPLETED Phase 2

COVID19 SARS Vaccinations: Systemic Allergic Reactions to SARS-CoV-2 Vaccinations

NCT04761822

COMPLETED

PK and Safety of Remdesivir for Treatment of COVID-19 in Pregnant and Non-Pregnant Women in the US

NCT04582266

COMPLETED Phase 1

Safety and Immunogenicity Study of a SARS-CoV-2 (COVID-19) Variant Vaccine (mRNA-1273.351) in Naïve and Previously Vaccinated Adults

NCT04785144

COMPLETED Phase 1

Chimpanzee Adenovirus and Self-Amplifying mRNA Prime-Boost Prophylactic Vaccines Against SARS-CoV-2 in Healthy Adults

NCT04776317

COMPLETED Phase 3

A Study of SARS CoV-2 Infection and Potential Transmission in Individuals Immunized With Moderna COVID-19 Vaccine

NCT04811664

TERMINATED Phase 2

Drug-Drug Interactions Between Rifapentine and Dolutegravir in HIV/LTBI Co-Infected Individuals

NCT04272242

COMPLETED Phase 2

Study of Semaglutide for Non-Alcoholic Fatty Liver Disease (NAFLD), a Metabolic Syndrome With Insulin Resistance, Increased Hepatic Lipids, and Increased Cardiovascular Disease Risk (The SLIM LIVER Study)

NCT04216589

COMPLETED Phase 3

AZD7442 for Inpatients With COVID-19 (An ACTIV-3/TICO Treatment Trial)

NCT05780437

TERMINATED Phase 2

Mepolizumab in Episodic Angioedema With Eosinophilia

NCT04128371

COMPLETED Phase 3

VIR-7831 for Inpatients With COVID-19 (An ACTIV-3/TICO Treatment Trial)

NCT05780281

COMPLETED Phase 3

BRII-196/BRII-198 for Inpatients With COVID-19 (An ACTIV-3/TICO Treatment Trial)

NCT05780424

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Phase Distribution

PhaseTrial count
Phase 1 858
Phase 2 433
Phase 3 123
Phase 4 54

What is open in the National Institute of Allergy and Infectious Diseases (NIAID) pipeline

155 recruiting of 2,006 indexed (8% open); 1,642 completed (82%).

Phase mix: 177 late (III/IV) vs 1,291 early (I/II) (early-phase heavy).

Top condition: HIV Infections (195 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 Institute of Allergy and Infectious Diseases (NIAID): open-pipeline peers nationwide

Peers matched on 2,006 registered trials and 8% open enrollment, not the therapeutic-area sidebar.

National Institute of Allergy and Infectious Diseases (NIAID) 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 05001,0001,5002,0002,500 5%10%15%20% Total trials Recruiting share National Institute of Allergy and Infectious Diseases (NIAID)Massachusetts General HospitalMemorial Sloan Kettering Cancer CenterPfizerStanford UniversityAlumisAndrei IagaruBioXcel TherapeuticsCorporal Michael J. Crescenz VA Medical Center
National Institute of Allergy and Infectious Diseases (NIAID) 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 Institute of Allergy and Infectious Diseases (NIAID) 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 2,006 trials (± recruiting share)

Sponsors near 8% open enrollment (± trial volume)

What to do with this National Institute of Allergy and Infectious Diseases (NIAID) page

2,006 registered trials is a research-attention snapshot, not an endorsement of National Institute of Allergy and Infectious Diseases (NIAID) or any single study.

  • 155 of National Institute of Allergy and Infectious Diseases (NIAID)'s trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • HIV Infections is the condition National Institute of Allergy and Infectious Diseases (NIAID) studies most, compare against other sponsors active in the same condition before evaluating a specific study. See HIV Infections 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 Institute of Allergy and Infectious Diseases (NIAID) pipeline card: 2,006 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.