Pfizer

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, Pfizer sits in the top decile of US sponsors by registered trial count (#7 of 15,742 sponsors by registered trial count).

1,845 total trials 106 currently recruiting 1335 completed early-phase tilt top decile by trial count

Pfizer: 1,845 sponsored US clinical trials, 106 recruiting.

Pfizer sponsors 1,845 registered US clinical trials on ClinicalTrials.gov, 106 of them currently recruiting, and 1,335 completed. 504 of these trials are in Phase 3-4 (later-stage) and 1,173 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Healthy, with 44 trials.

Top-decile sponsor footprint

Pfizer ranks in the top decile of sponsors by registered trial count (#7 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 39/100

1,335 of 1,673 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (79.8%), 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

1,845 total, page 13 of 37

COMPLETED Phase 2

Open Label Safety Study in Acute Treatment of Migraine

NCT03266588

COMPLETED Phase 2

Phase 2a, Dose-ranging Study With PF-05221304 in Nonalcoholic Fatty Liver Disease (NAFLD)

NCT03248882

COMPLETED Phase 1

A Study To Assess The Safety, Tolerability, And Pharmacokinetics (PK) Of Multiple Doses Of PF-06865571 In Healthy, Including Overweight And Obese, Adult Subjects

NCT03230383

COMPLETED Phase 3

Safety and Efficacy in Adult Subjects With Acute Migraines

NCT03237845

COMPLETED Phase 1

Proton Pump Inhibitor (PPI, Rabeprazole) Effect On Tablet Formulation Of Palbociclib

NCT03220191

COMPLETED Phase 3

Safety and Efficacy Study in Adult Subjects With Acute Migraines

NCT03235479

TERMINATED Phase 1

A First in HumanTrial to Evaluate The Safety, Tolerability, And Pharmacokinetics Of PF-06755347

NCT03275740

COMPLETED Phase 1

A First in Human Study to Evaluate Safety, Tolerability, and Pharmacology of PF-06826647 in Healthy Subjects and Subjects With Plaque Psoriasis

NCT03210961

TERMINATED Phase 2

Safety and Tolerability of PF-06649751 in Parkinson's Disease Patients With Motor Fluctuations

NCT03185481

COMPLETED Phase 1

Single-dose Study of [14C]Lorlatinib (PF-06463922) Metabolism In Healthy Male Volunteers

NCT03184168

COMPLETED Phase 2

A Study of Talazoparib in Men With DNA Repair Defects and Metastatic Castration-Resistant Prostate Cancer

NCT03148795

COMPLETED Phase 2

A Study of Recombinant AAV2/6 Human Factor 8 Gene Therapy SB-525 (PF-07055480) in Subjects With Severe Hemophilia A

NCT03061201

COMPLETED Phase 1

A Study to Evaluate the Effects of Food and Esomeprazole on the Pharmacokinetics of Crizotinib in a Coated Microsphere Formulation.

NCT03137134

COMPLETED

Ibrance Real World Insights

NCT03159195

COMPLETED Phase 2

A Phase 1/2, Randomized, Placebo-controlled, Observer-blinded Trial To Evaluate The Safety, Tolerability, And Immunogenicity Of A Multivalent Group B Streptococcus Vaccine In Healthy Adults 18 To 49 Years Of Age

NCT03170609

TERMINATED Phase 4

PREA, PK And Safety PASS Study Of IV Pantoprazole In Pediatric Subjects

NCT02401035

COMPLETED Phase 1

A Study Of Glasdegib In Healthy Volunteers To Establish The Bioequivalence Of The Phase 2 Formulation To The ICH Formulation

NCT03130556

COMPLETED Phase 3

A Trial to Describe the Immunogenicity and Safety of 2 Doses of Bivalent rLP2086 (Trumenba) and a Pentavalent Meningococcal Vaccine in Healthy Subjects >=10 to <26 Years of Age.

NCT03135834

COMPLETED Phase 3

Clostridium Difficile Vaccine Efficacy Trial

NCT03090191

COMPLETED Phase 1

Single-Dose PK and Safety Study of GBT440 in Subjects With Hepatic Impairment

NCT03114540

COMPLETED Phase 1

Single Dose Study to Assess the Safety, Tolerability and Pharmacokinetics(PK) of PF-06865571

NCT03092232

COMPLETED Phase 2

PF-06741086 Multiple Dose Study in Severe Hemophilia

NCT02974855

COMPLETED Phase 1

An Open-Label Pharmacokinetics and Safety Study of Talazoparib

NCT02997163

COMPLETED Phase 1

Methodology Study To Examine 6-Week Food Intake With Liraglutide In Obese Subjects

NCT03041792

COMPLETED Phase 2

Study to Compare Oral PF-06651600, PF-06700841 and Placebo in Subjects With Moderate to Severe Ulcerative Colitis

NCT02958865

COMPLETED Phase 1

Study Assessing the Safety, Immunogenicity and Dose Response of VLA15, A New Vaccine Candidate Against Lyme Borreliosis

NCT03010228

COMPLETED

Palbociclib in Real World Practice

NCT03280303

COMPLETED Phase 2

Study To Assess The Efficacy And Safety Of Pf-06651600 In Subjects With Rheumatoid Arthritis With An Inadequate Response To Methotrexate

NCT02969044

TERMINATED Phase 3

Avelumab In Combination Regimens That Include An Immune Agonist, Epigenetic Modulator, CD20 Antagonist and/or Conventional Chemotherapy in Patients With Relapsed or Refractory Diffuse Large B-cell Lymphoma (R/R DLBCL)

NCT02951156

COMPLETED Phase 2

Study To Evaluate The Efficacy And Safety Profile Of PF-06651600 And PF-06700841 In Subjects With Alopecia Areata

NCT02974868

COMPLETED Phase 3

A Study of Ibuprofen 250 mg / Acetaminophen 500 mg Comparing The Antipyretic Effects in Healthy Male Volunteers

NCT02761980

COMPLETED Phase 3

Study to Evaluate the Effect of Voxelotor Administered Orally to Patients With Sickle Cell Disease (GBT_HOPE)

NCT03036813

COMPLETED Phase 2

Study To Evaluate Safety And Efficacy Of PF-06700841 In Subjects With Moderate To Severe Plaque Psoriasis

NCT02969018

TERMINATED Phase 1

A Study Of PF-06747143, As Single Agent Or In Combination With Standard Chemotherapy In Adult Patients With Acute Myeloid Leukemia

NCT02954653

TERMINATED Phase 3

Study To Compare Avelumab In Combination With Standard of Care Chemoradiotherapy (SoC CRT) Versus SoC CRT for Definitive Treatment In Patients With Locally Advanced Squamous Cell Carcinoma Of The Head And Neck (JAVELIN HEAD AND NECK 100)

NCT02952586

COMPLETED Phase 1

Test Re-Test Reliability of [11C]PF-06809247 as a Novel PET Tacer

NCT03100136

TERMINATED Phase 1

Safety and Tolerability of PF-06818883 in Healthy Subjects

NCT03020784

COMPLETED Phase 2

Safety and Efficacy of Pf-06650833 In Subjects With Rheumatoid Arthritis, With An Inadequate Response To Methotrexate

NCT02996500

COMPLETED Phase 2

Open-Label Extension and Safety Study of Talazoparib

NCT02921919

COMPLETED Phase 1

A Phase 1, Randomized, Controlled, Observer-blinded Trial to Evaluate the Safety and Immunogenicity of a Multivalent Pneumococcal Conjugate Vaccine in Healthy Adults Aged 18 to 49 Years

NCT02955160

TERMINATED Phase 1

Safety and Tolerability of PF-05230907 in Intracerebral Hemorrhage

NCT02687191

TERMINATED Phase 2

Efficacy, Safety and Tolerability of PF-06649751 in Parkinson's Disease Patients at Early Stage of the Disease

NCT02847650

COMPLETED Phase 3

Study of Encorafenib + Cetuximab Plus or Minus Binimetinib vs. Irinotecan/Cetuximab or Infusional 5-Fluorouracil (5-FU)/Folinic Acid (FA)/Irinotecan (FOLFIRI)/Cetuximab With a Safety Lead-in of Encorafenib + Binimetinib + Cetuximab in Patients With BRAF V600E-mutant Metastatic Colorectal Cancer

NCT02928224

COMPLETED Phase 1

A Study to Assess the Effects of Talazoparib on Cardiac Repolarization in Patients With Advanced Solid Tumors

NCT03042910

TERMINATED Phase 2

An Open-label Extension Study To Evaluate Safety Of PF-06252616 In Boys With Duchenne Muscular Dystrophy

NCT02907619

COMPLETED Phase 1

Single Dose of PF-06835919 Escalation Study in Healthy Adult Subjects

NCT02974374

COMPLETED Phase 1

A Study in Healthy Volunteers to Assess Immune Response to Multiple Injections of Filgrastim Hospira or Neupogen Reference Product.

NCT02923791

COMPLETED Phase 1

An Open-Label Pharmacokinetics and Safety Study of Talazoparib (MDV3800)

NCT02997176

TERMINATED Phase 1

First in Patient Study for PF-06840003 in Malignant Gliomas

NCT02764151

COMPLETED Phase 4

Methotrexate Withdrawal Study of Tofacitinib Modified Release Formulation in Subjects With Rheumatoid Arthritis

NCT02831855

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Phase Distribution

PhaseTrial count
Phase 1 703
Phase 2 470
Phase 3 411
Phase 4 93

What is open in the Pfizer pipeline

106 recruiting of 1,845 indexed (6% open); 1,335 completed (72%).

Phase mix: 504 late (III/IV) vs 1,173 early (I/II) (early-phase heavy).

Top condition: Healthy (44 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.

Pfizer: open-pipeline peers nationwide

Peers matched on 1,845 registered trials and 6% open enrollment, not the therapeutic-area sidebar.

Pfizer sits at or above the median trial volume and below 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 05001,0001,5002,000 5%10%15%20% Total trials Recruiting share PfizerMemorial Sloan Kettering Cancer CenterStanford UniversityDuke UniversityUniversity of California, San FranciscoPacira PharmaceuticalsBioDelivery Sciences InternationalColgate PalmoliveDurham VA Medical Center
Pfizer sits at or above the median trial volume and below the median recruiting share among these 9 nationwide peers -- the two do not always move together. Source: ClinicalTrials.gov (2026-08-08 snapshot).

Pfizer sits at or above the median trial volume and below the median recruiting share among these 9 nationwide peers -- the two do not always move together.

Sponsors near 1,845 trials (± recruiting share)

Sponsors near 6% open enrollment (± trial volume)

What to do with this Pfizer page

1,845 registered trials is a research-attention snapshot, not an endorsement of Pfizer or any single study.

  • 106 of Pfizer's trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • Healthy is the condition Pfizer studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Healthy 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. Pfizer pipeline card: 1,845 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.