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 38 of 41

COMPLETED

A Study of HIV and Cytomegalovirus (CMV) in HIV-Infected Patients

NCT00001089

COMPLETED Phase 1

A Study of Letrazuril in the Treatment of AIDS-Related Diarrhea

NCT00001018

COMPLETED NA

Metformin and Rosiglitazone, Alone or in Combination, in HIV-Infected Patients With Insulin and Fat Abnormalities

NCT00015691

COMPLETED Phase 1

Foscarnet Treatment of Serious CMV Retinitis Infection in Patients With Acquired Immunodeficiency Syndrome

NCT00000726

COMPLETED Phase 3

Comparison of Trimetrexate Plus Leucovorin Calcium Rescue Versus Sulfamethoxazole-Trimethoprim in the Treatment of Pneumocystis Carinii Pneumonia (PCP) in Patients With AIDS

NCT00001013

COMPLETED Phase 1

A Study on Possible Interactions Between Protease Inhibitors (Anti-HIV Drugs) and Drugs Which Lower the Level of Fat in Your Blood

NCT00000941

COMPLETED

Evaluating Immune Function Tests in People With HIV

NCT00067795

COMPLETED Phase 1

A Multicenter, Randomized, Placebo-Controlled, Double-Blind Trial to Evaluate the Safety and Immunogenicity of a Recombinant Vaccinia-HIV-1 IIIB Env/Gag/Pol Vaccine (TBC-3B)

NCT00000767

COMPLETED Phase 1

A Phase I Safety and Immunogenicity Trial of Live Recombinant Canarypox ALVAC-HIV vCP300 and HIV-1 SF-2 rgp120 in HIV-1 Uninfected Adult Volunteers

NCT00001072

COMPLETED NA

A Study of Several Anti-HIV Drug Combinations in HIV-Infected Patients Who Have Used Indinavir

NCT00000892

COMPLETED Phase 1

Active Immunization of HIV-1 Infected, Pregnant Women With CD4 Lymphocyte Counts >= 400/mm3: A Phase I Study of Safety and Immunogenicity of MN rgp120/HIV-1 Vaccine (NOTE: Some Patients Receive Placebo)

NCT00001041

COMPLETED Phase 2

A Study to Demonstrate That Anti-HIV Drug Therapy Can be Stopped Without Causing Viral Resistance, and to Characterize Drug Elimination From the Body

NCT00029341

COMPLETED Phase 1

A Phase I, Multicenter, Randomized Trial to Evaluate the Safety and Immunogenicity of a Recombinant Vaccinia-HIV Envelope Vaccine (HIVAC-1e) in Combination With a Panel of Subunit Recombinant HIV Envelope Vaccines

NCT00000746

COMPLETED NA

Aerosols in the Treatment of Asymptomatic Pneumocystis Pneumonia: A Pilot Study Assessing the Effectiveness of Aerosolized Pentamidine as Treatment of Subclinical Pneumocystis Infection in Patients With No Clinical Symptoms

NCT00000707

COMPLETED Phase 1

A Phase I Multicenter Clinical Trial to Evaluate the Safety and Immunogenicity of Vaccinia Derived HIV-1 Recombinant Envelope Glycoprotein (gp160) of Human Immunodeficiency Virus: Evaluation of Accelerated Schedules

NCT00000957

COMPLETED Phase 2

A Comparative Study of a Combination of Zidovudine, Didanosine, and Double-Blinded Nevirapine Versus a Combination of Zidovudine and Didanosine

NCT00000770

COMPLETED Phase 1

Safety and Efficacy of Polyethylene Glycolated IL-2 (PEG IL-2) Plus Zidovudine in HIV Positive, Asymptomatic and Symptomatic Individuals

NCT00000664

COMPLETED NA

A Clinical Trial of Alternating and Intermittent Regimens of 2',3'-Dideoxycytidine and 3'-Azido-3'-Deoxythymidine in the Treatment of Patients With AIDS and Advanced ARC

NCT00000718

COMPLETED Phase 1

Interventional Study of Mucosal and Antimicrobial Responses to Repeated Vaginal Applications of Tenofovir Gel in HIV Uninfected Women

NCT00594373

COMPLETED Phase 1

The Safety and Effectiveness of BI-RG-587 in HIV-Infected Patients

NCT00000962

COMPLETED Phase 2

A Phase II Study of Low-Dose Interleukin-2 by Subcutaneous Injection in Combination With Antiretroviral Therapy Versus Antiretroviral Therapy Alone in Patients With HIV-1 Infection and at Least 3 Months Stable Antiretroviral Therapy

NCT00000820

COMPLETED NA

A Study of Dideoxycytidine in HIV-Infected Patients

NCT00000997

COMPLETED Phase 2

Safety and Effectiveness of the Selegiline "Patch" for Decreased Mental Function in HIV Patients

NCT00013585

COMPLETED Phase 2

A Study of Abacavir Plus Indinavir Sulfate Plus Efavirenz in HIV-Infected Patients

NCT00001086

COMPLETED Phase 1

A Study of Zidovudine in HIV-Infected Pregnant Women and Their Children

NCT00001106

COMPLETED Phase 1

A Phase I, Multicenter, Randomized, Double-Blind, Placebo-Controlled Trial to Evaluate the Safety and Immunogenicity of HIV-1 MN rsgp120 and Bivalent AIDSVAX B/E (HIV-1 MN rgp120/A244 rgp120) in Combination With QS-21 With or Without Alum in Healthy HIV-1 Uninfected Adults

NCT00001096

COMPLETED NA

A Study on the Effect of High-Calorie Infant Formula on Growth and Nutrition in HIV-Infected Infants

NCT00000873

COMPLETED Phase 1

A Placebo-Controlled, Phase I Clinical Trial to Evaluate the Safety and Immunogenicity of Recombinant Envelope Proteins of HIV-1 gp160 and gp120 in Children >= 1 Month Old With Asymptomatic HIV Infection

NCT00000762

COMPLETED Phase 1

A Phase I Pharmacokinetic and Tolerance Study of 28-Day Regimens of Oral Ganciclovir

NCT00000668

COMPLETED Phase 1

A Phase I Safety and Immunogenicity Trial of Live Recombinant Canarypox ALVAC-HIV (vCP205) and HIV-1 SF-2 rgp120 in HIV-1 Uninfected Adult Volunteers

NCT00000847

COMPLETED Phase 3

A Phase III Comparative Study of Dapsone / Trimethoprim and Clindamycin / Primaquine Versus Sulfamethoxazole / Trimethoprim in the Treatment of Mild-to-Moderate PCP in Patients With AIDS

NCT00000640

COMPLETED Phase 2

Primary Prophylaxis of Cerebral Toxoplasmosis in HIV-Infected Patients

NCT00000643

COMPLETED Phase 2

Trivalent rHA Dose Escalation Study in Elderly Subjects

NCT00170443

COMPLETED NA

An Assessment of the In Vivo Biological Effects of Diethyldithiocarbamate (DTC) in HIV-Infected Patients

NCT00000650

COMPLETED Phase 3

Study of Four Different Treatment Approaches for Patients Who Have Mycobacterium Avium Complex Disease (MAC) Plus AIDS

NCT00001047

COMPLETED NA

A Study of Atvogen in Healthy Volunteers and HIV-Infected Patients Who Have No Symptoms of Infection

NCT00001000

COMPLETED

Prevalence of Hepatitis C Virus Infection in HIV-Infected Children

NCT00037076

COMPLETED NA

Growth Hormone Treatment of Children With HIV-Associated Growth Failure

NCT00006143

COMPLETED Phase 1

A Phase I Study to Evaluate the Safety and Immunogenicity of Recombinant HIV-1 Envelope Antigen in Children Born to HIV-Infected Mothers

NCT00000774

COMPLETED Phase 3

Comparing the Safety, Effectiveness, and Tolerability of Three Anti-HIV Drug Regimens for Treatment-Naive Patients

NCT00050895

COMPLETED Phase 3

A Randomized, Unblinded Trial of Zidovudine Versus ddC in the Treatment of Patients Status Post PCP Who Received Long-Term Zidovudine Therapy in Protocol ACTG 002

NCT00000682

COMPLETED Phase 1

A Phase I Study of Autologous, Activated CD8(+) Lymphocytes Expanded In Vitro and Infused With or Without Recombinant Interleukin-2 to Patients With AIDS or Severe ARC

NCT00000680

COMPLETED Phase 3

A Study of Nevirapine for the Prevention of HIV Transmission From Mothers to Their Babies

NCT00000869

COMPLETED Phase 1

Evaluation of Two Type III GBS Polysaccharide-Tetanus Toxoid Conjugate Vaccines

NCT00008853

COMPLETED Phase 3

A Randomized, Double Blind, Comparative Study of Dideoxycytidine (ddC) Alone or ddC/AZT Combination Versus Zidovudine (ZDV) Alone in Patients With HIV Infection Who Have Received Prior ZDV Therapy

NCT00000651

COMPLETED Phase 1

The Safety and Effectiveness of a Two-Drug Combination in the Treatment of Patients With Hepatitis C Plus Advanced HIV Infections

NCT00001035

COMPLETED Phase 1

A Study of Dideoxycytidine Plus Zidovudine in the Treatment of AIDS or Advanced AIDS Related Complex (ARC)

NCT00000978

COMPLETED NA

A Study on the Rate of Opportunistic (AIDS-Related) Infections Among HIV-Positive Children Who Have Stopped Taking Their OI Preventive Medications

NCT00001078

COMPLETED Phase 1

A Phase I Study of the Safety and Pharmacokinetics of Recombinant CD4 Immunoglobulin G (rCD4-IgG) in HIV-1 Seropositive Women During the Last Trimester of Pregnancy and Their Newborns

NCT00000642

COMPLETED Phase 1

A Study of BufferGel in Women

NCT00000927

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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.