Regeneron Pharmaceuticals

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, Regeneron Pharmaceuticals sits in the top decile of US sponsors by registered trial count (#122 of 15,742 sponsors by registered trial count).

280 total trials 61 currently recruiting 151 completed early-phase tilt top decile by trial count

Regeneron Pharmaceuticals: 280 sponsored US clinical trials, 61 recruiting.

Regeneron Pharmaceuticals sponsors 280 registered US clinical trials on ClinicalTrials.gov, 61 of them currently recruiting, and 151 completed. 83 of these trials are in Phase 3-4 (later-stage) and 174 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Dermatitis, Atopic, with 6 trials.

Top-decile sponsor footprint

Regeneron Pharmaceuticals ranks in the top decile of sponsors by registered trial count (#122 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

F 38/100

151 of 190 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (79.5%), 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

280 total, page 5 of 6

COMPLETED Phase 1

Study of Fasinumab (REGN475) in Healthy Japanese and Caucasian Subjects

NCT02516618

COMPLETED Phase 2

Study of Dupilumab in Adult Participants With Active Eosinophilic Esophagitis (EoE)

NCT02379052

TERMINATED Phase 2

Study of Intravitreal REGN2176-3 in Participants With Neovascular ("Wet") Age-Related Macular Degeneration (AMD)

NCT02418754

COMPLETED Phase 2

Study of REGN475 in Patients With Pain Due to Osteoarthritis of the Knee or Hip

NCT02447276

COMPLETED Phase 3

Study of Alirocumab (REGN727/SAR236553) in Patients With Heterozygous Familial Hypercholesterolemia (HeFH) Undergoing Low-density Lipoprotein (LDL) Apheresis Therapy

NCT02326220

COMPLETED Phase 2

Study of REGN1500 in Participants With Homozygous Familial Hypercholesterolemia (HoFH)

NCT02265952

COMPLETED Phase 1

Study of REGN2810 (Anti-PD-1) in Patients With Advanced Malignancies

NCT02383212

COMPLETED Phase 1

Study to Investigate the Safety and Tolerability of Odronextamab in Patients With CD20+ B-Cell Malignancies

NCT02290951

COMPLETED Phase 3

Study of Dupilumab (REGN668/SAR231893) Monotherapy Administered to Adult Patients With Moderate-to-Severe Atopic Dermatitis

NCT02277769

COMPLETED Phase 1

Study of Intravitreal (IVT) REGN910-3 and IVT REGN910 in Patients With Either Neovascular ("Wet") Age Related Macular Degeneration (AMD) or Diabetic Macular Edema (DME)

NCT01997164

COMPLETED Phase 3

Study of Dupilumab Monotherapy Administered to Adult Patients With Moderate-to-Severe Atopic Dermatitis

NCT02277743

TERMINATED Phase 1

Study of REGN1193 in Patients With Type 2 Diabetes Mellitus

NCT02284425

COMPLETED Phase 3

Study to Assess the Efficacy and Long-term Safety of Dupilumab (REGN668/SAR231893) in Adult Participants With Moderate-to-Severe Atopic Dermatitis

NCT02260986

COMPLETED Phase 2

Study of Dupilumab and Immune Responses in Adults With Atopic Dermatitis (AD)

NCT02210780

COMPLETED Phase 1

Study of the Safety and Tolerability of REGN2222(SAR438584) in Healthy Adult Volunteers

NCT02121080

COMPLETED Phase 1

Study to Assess the Safety and Tolerability of Multiple Ascending Doses of REGN1500

NCT02107872

COMPLETED Phase 1

Single-dose Study to Describe the Pharmacodynamics (PD) and Safety of Sarilumab (REGN88/SAR153191) and Tocilizumab in Adults With Rheumatoid Arthritis (RA)

NCT02097524

COMPLETED Phase 1

Phase 1 Safety Study With Intravitreal (IVT) REGN2176-3 in Patients Aged 50 Years and Older With Wet AMD

NCT02061865

COMPLETED Phase 2

Study to Determine the Safety and Effectiveness of Dupilumab for Treatment of Atopic Dermatitis (AD)

NCT01979016

COMPLETED Phase 2

Study of the Safety and Efficacy of REGN1033 (SAR391786) in Patients With Sarcopenia

NCT01963598

COMPLETED Phase 3

Open-label Study of Dupilumab in Patients With Atopic Dermatitis

NCT01949311

COMPLETED Phase 3

Study to Evaluate the Efficacy and Safety of an Every Four Weeks Treatment Regimen of Alirocumab (REGN727/ SAR236553) in Patients With Primary Hypercholesterolemia (ODYSSEY CHOICE 1)

NCT01926782

COMPLETED Phase 1

Single Ascending-dose Study of the Safety, Tolerability, and Pharmacokinetics of REGN1908-1909 in Allergic, Adult Subjects

NCT01922661

COMPLETED Phase 1

Study to Assess the Safety and Bioeffect of REGN1033 (SAR391786)

NCT01910220

COMPLETED Phase 1

An Ascending Single-Dose Study of the Safety, Tolerability and Bioeffect of REGN1193

NCT01933763

COMPLETED Phase 1

Study to Assess the Safety and Tolerability of Ascending Single Doses of REGN2009 in Healthy Volunteers

NCT01893528

COMPLETED Phase 2

Study of Dupilumab Administered to Adult Patients With Moderate-to-Severe Atopic Dermatitis

NCT01859988

COMPLETED Phase 1

Study to Assess the Safety and Tolerability of Single Doses of REGN1500

NCT01749878

COMPLETED Phase 3

Study of Alirocumab (REGN727/SAR236553) added-on to Rosuvastatin Versus Other Lipid Modifying Treatments (LMT) (ODYSSEY OPTIONS II)

NCT01730053

COMPLETED Phase 4

Study to Assess Best Corrected Visual Acuity (BCVA) in Patients With Neovascular Age-Related Macular Degeneration (AMD) Who Are Administered VEGF Trap-Eye (Intravitreal Aflibercept Injection)

NCT01722045

COMPLETED Phase 1

Study of REGN1400 Alone and in Combination With Erlotinib or Cetuximab in Patients With Certain Types of Cancer

NCT01727869

COMPLETED Phase 3

Study of the Efficacy and Safety of Alirocumab (REGN727/SAR236553) in Combination With Other Lipid-modifying Treatment (LMT) (ODYSSEY OPTIONS I)

NCT01730040

COMPLETED Phase 1

Nesvacumab (REGN910/ SAR307746) and Aflibercept ("Ziv-aflibercept" in the U.S.) in Patients With Advanced Solid Malignancies

NCT01688960

COMPLETED Phase 1

Study to Assess the Safety and Tolerability of Multiple Ascending Doses of REGN1033 (SAR391786)

NCT01720576

COMPLETED Phase 3

Study of Alirocumab (REGN727/SAR236553) in Patients With Primary Hypercholesterolemia and Moderate, High, or Very High Cardiovascular (CV) Risk, Who Are Intolerant to Statins (ODYSSEY ALTERNATIVE)

NCT01709513

COMPLETED Phase 3

Study to Assess the Clinical Efficacy and Safety of Intravitreal Aflibercept Injection (IAI;EYLEA®;BAY86-5321) in Patients With Branch Retinal Vein Occlusion (BRVO)

NCT01521559

COMPLETED Phase 2

Open-Label Extension of Study R727-CL-1003 (NCT01266876) to Evaluate the Long-Term Safety and Efficacy of Alirocumab (REGN727) in Participants With Heterozygous Familial Hypercholesterolemia (HeFH)

NCT01576484

COMPLETED Phase 2

A Study of Alirocumab in Participants With Autosomal Dominant Hypercholesterolemia (ADH) and Gain-of-Function Mutations (GOFm) of the Proprotein Convertase Subtilisin Kexin 9 (PCSK9) Gene or Loss-of-Function Mutations (LOFm) of the Apolipoprotein (Apo) B Gene

NCT01604824

COMPLETED Phase 1

A Study to Assess the Safety and Tolerability of Single Ascending Doses of REGN1033(SAR391786)

NCT01507402

COMPLETED Phase 1

Study of the Safety, Tolerability, Pharmacokinetics, and Immunogenicity of REGN668 Administered Subcutaneously to Healthy Volunteers

NCT01484600

TERMINATED Phase 3

Study of the Safety and Efficacy of Long-Term Rilonacept Treatment for the Prevention of Gout Flares

NCT01459796

COMPLETED Phase 4

Efficacy and Safety of Colchicine for the Prevention of Gout Flares During the Initiation of Allopurinol

NCT01451645

COMPLETED Phase 3

Study of Intravitreal Aflibercept Injection (IAI; EYLEA®; BAY86-5321) in Patients With Diabetic Macular Edema

NCT01363440

COMPLETED Phase 2

Study of the Safety and Efficacy of REGN727/SAR236553 in Patients With HeFH Hypercholesterolemia

NCT01266876

COMPLETED Phase 1

Study of Nesvacumab (REGN910/ SAR307746)

NCT01271972

COMPLETED Phase 1

Sequential Ascending Dose Study to Assess the Safety and Tolerability of REGN668 (SAR231893) in Patients With Atopic Dermatitis

NCT01259323

COMPLETED Phase 1

Ascending Dose Study of the Safety and Tolerability of REGN728 in Healthy Volunteers

NCT01197391

COMPLETED

A Study of Tocilizumab in Patients With Rheumatoid Arthritis

NCT01187563

COMPLETED Phase 1

Ascending Multi-dose Study of REGN727(SAR236553) With and Without Concomitant Atorvastatin

NCT01161082

COMPLETED Phase 1

Ascending Dose Study of the Safety and Tolerability of REGN727 (SAR236553) in Healthy Volunteers

NCT01074372

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What is open in the Regeneron Pharmaceuticals pipeline

61 recruiting of 280 indexed (22% open); 151 completed (54%).

Phase mix: 83 late (III/IV) vs 174 early (I/II) (early-phase heavy).

Top condition: Dermatitis, Atopic (6 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.

Regeneron Pharmaceuticals: open-pipeline peers nationwide

Peers matched on 280 registered trials and 22% open enrollment, not the therapeutic-area sidebar.

Regeneron Pharmaceuticals 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 0100200300400 0%5%10%15%20%25% Total trials Recruiting share Regeneron PharmaceuticalsBoston Scientific CorporationAlcon ResearchEisaiSWOG Cancer Research NetworkAtriCureUniversity of Colorado, BoulderUniversity of Maryland, College ParkNorthwell Health
Regeneron Pharmaceuticals 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).

Regeneron Pharmaceuticals 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 280 trials (± recruiting share)

Sponsors near 22% open enrollment (± trial volume)

What to do with this Regeneron Pharmaceuticals page

280 registered trials is a research-attention snapshot, not an endorsement of Regeneron Pharmaceuticals or any single study.

  • 61 of Regeneron Pharmaceuticals's trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • Dermatitis, Atopic is the condition Regeneron Pharmaceuticals studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Dermatitis, Atopic 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. Regeneron Pharmaceuticals pipeline card: 280 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.