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 11 of 37

COMPLETED Phase 2

Dose Ranging Study To Assess Efficacy, Safety and Tolerability Of PF-06700841 Topical Cream In Psoriasis

NCT03850483

COMPLETED Phase 1

Evaluate Severe Hepatic Impairment on Dacomitinib PK

NCT03865446

COMPLETED Phase 3

Clostridium Difficile Vaccine 2-Dose Versus 3-Dose Study

NCT03918629

COMPLETED Phase 2

Acute Treatment Trial in Adult Subjects With Migraines

NCT03872453

TERMINATED Phase 1

A Dose Escalation Study Of PF-06939999 In Participants With Advanced Or Metastatic Solid Tumors

NCT03854227

COMPLETED Phase 1

Open Label, 2-period Study, TO Compare Bio-availability OF 2 Different Formulations OF PF-05221304 IN Healthy Adults

NCT03871439

COMPLETED Phase 3

JAK1 Inhibitor With Medicated Topical Therapy in Adolescents With Atopic Dermatitis

NCT03796676

COMPLETED Phase 3

Trial to Evaluate the Safety and Immunogenicity of 3 Lots of 20-valent Pneumococcal Conjugate Vaccine in Pneumococcal Vaccine-Naïve Adults

NCT03828617

TERMINATED NA

Treatment Resistance Following Anti-cancer Therapies

NCT04436120

COMPLETED Phase 3

Trial to Evaluate the Safety and Immunogenicity of a 20-Valent Pneumococcal Vaccine in Adults 65 Years of Age or Older With Prior Pneumococcal Vaccination

NCT03835975

COMPLETED Phase 3

Patient Perception of Treatment Burden in Weekly Versus Daily Growth Hormone Injections in Children With GHD

NCT03831880

COMPLETED Phase 1

A Drug-drug Interaction Study Between PF-06650833 AND PF-06651600 Following Multiple Doses IN Healthy Participants

NCT03827668

COMPLETED

Real-world Treatment Patterns and Effectiveness of Palbociclib and AI Therapy

NCT04176354

COMPLETED Phase 1

A Bioequivalence Study of Testosterone Cypionate in Hypogonadal Males

NCT03792477

COMPLETED Phase 2

Trial To Evaluate The Safety, Tolerability, And Immunogenicity Of A Multivalent Group B Streptococcus Vaccine In Healthy Nonpregnant Women And Pregnant Women And Their Infants

NCT03765073

COMPLETED Phase 2

A Study To Assess Pharmacodynamics, Safety And Tolerability Of PF-05221304 And PF-06865571 Co-Administered For 6 Weeks In Adults With Non-Alcoholic Fatty Liver Disease.

NCT03776175

COMPLETED

RW Treatment Patterns and Outcomes in Postmenopausal HR+/HER2- mBC Patients Treated With Palbociclib Plus Letrozole as Initial Endocrine Therapy at Community Oncology Practices in the U.S.

NCT04460898

COMPLETED

Comparative Analysis of Outcomes Among Patients Treated With Xeljanz vs Biologics

NCT03964649

TERMINATED Phase 3

Actual Use and Compliance Study Of Ibuprofen 600 Mg Immediate Release/Extended Release Tablets In At-Risk OTC Consumers

NCT03722238

COMPLETED Phase 2

Immunogenicity and Safety Study of a Vaccine Against Lyme Borreliosis, in Healthy Adults Aged 18 to 65 Years. Randomized, Controlled, Observer-blind Phase 2 Study.

NCT03769194

COMPLETED Phase 3

Trial to Evaluate the Safety and Immunogenicity of a 20-valent Pneumococcal Conjugate Vaccine in Pneumococcal Vaccine-naïve Adults

NCT03760146

COMPLETED Phase 1

Estimation OF THE Effect OF Multiple Dose PF-06651600 ON THE Pharmacokinetics OF Single Dose Midazolam AND Efavirenz

NCT03762928

COMPLETED Phase 2

PF-06651600 for the Treatment of Alopecia Areata

NCT03732807

TERMINATED Phase 1

Vaccine-Based Immunotherapy Regimen For NSCLC and TNBC

NCT03674827

COMPLETED Phase 2

A Phase 2b Study To Evaluate The Efficacy And Safety Profile Of PF-06651600 And PF-06700841 In Active Non-segmental Vitiligo Subjects

NCT03715829

COMPLETED Phase 2

Efficacy and Safety Trial of Rimegepant for Migraine Prevention in Adults

NCT03732638

COMPLETED Phase 1

Study To Assess Local Tolerability of Crisaborole 2% Ointment and Vehicle Ointment In Healthy Participants Using Subject-reported Assessments and Objective Measurements

NCT03760042

COMPLETED Phase 1

A Study to Evaluate the Effect of Hepatic Impairment on the Pharmacokinetics of Glasdegib

NCT03627754

COMPLETED Phase 3

Study Evaluating Efficacy and Safety of PF-04965842 and Dupilumab in Adult Subjects With Moderate to Severe Atopic Dermatitis on Background Topical Therapy

NCT03720470

TERMINATED Phase 2

A Study to Evaluate PF-06730512 in Adults With Focal Segmental Glomerulosclerosis (FSGS)

NCT03448692

COMPLETED Phase 1

A Renal Impairment Study for PF-04965842

NCT03660241

TERMINATED Phase 1

PF-06952229 Treatment in Adult Patients With Advanced Solid Tumors

NCT03685591

COMPLETED Phase 1

A Hepatic Impairment Study for PF-04965842.

NCT03626415

COMPLETED

A Study To Compare The Effectiveness Of Tofacitinib 11 Mg Once A Day To Tofacitinib 5 Mg Twice A Day

NCT04267380

COMPLETED Phase 1

A Study to Determine the Effects of PF-04965842 on the Pharmacokinetics of Oral Contraceptive Steroids in Healthy Female Subjects

NCT03662516

COMPLETED Phase 1

A Study TO Estimate THE Effect OF PF-06651600 ON THE Pharmacokinetics (PK) OF Oral Contraceptive (OC)

NCT03608241

COMPLETED Phase 1

Trial to Evaluate the Safety and Immunogenicity of Multivalent Pneumococcal Vaccines in Japanese Adults 18 to 49 Years of Age

NCT03642847

TERMINATED Phase 2

Talazoparib For Neoadjuvant Treatment Of Germline BRCA1/2 Mutation Patients With Early Human Epidermal Growth Factor Receptor 2 Negative Breast Cancer

NCT03499353

COMPLETED Phase 1

Lorlatinib Renal Impairment Study

NCT03542305

TERMINATED Phase 1

A Study of Avelumab, Binimetinib and Talazoparib in Patients With Locally Advanced or Metastatic RAS-mutant Solid Tumors

NCT03637491

COMPLETED Phase 3

Evaluation Of Clostridium Difficile Vaccine Lot Consistency In Healthy Adults 65 To 85 Years Of Age

NCT03579459

COMPLETED Phase 1

Singe Dose, First in Human Study of PF- 06946860 in Healthy Adult Subjects

NCT03599063

COMPLETED Phase 3

A Study to Evaluate Prospective Efficacy and Safety Data of Current FIX Prophylaxis Replacement Therapy in Adult Hemophilia B Subjects (FIX:C≤2%) or Current FVIII Prophylaxis Replacement Therapy in Adult Hemophilia A Subjects (FVIII:C≤1%)

NCT03587116

TERMINATED Phase 3

Avelumab and Talazoparib in Untreated Advanced Ovarian Cancer (JAVELIN OVARIAN PARP 100)

NCT03642132

COMPLETED Phase 3

Study Evaluating Efficacy and Safety of PF-04965842 in Subjects Aged 12 Years And Older With Moderate to Severe Atopic Dermatitis

NCT03575871

COMPLETED Phase 1

4-Week, Multiple-dose, Dose-escalating Study In Patients With Type 2 Diabetes

NCT03538743

COMPLETED Phase 1

2-Week Study In People With Nonalcoholic Fatty Liver Disease

NCT03513588

TERMINATED Phase 2

Javelin BRCA/ATM: Avelumab Plus Talazoparib in Patients With BRCA or ATM Mutant Solid Tumors

NCT03565991

TERMINATED

Observational Study Investigating Clinical & Anthropometric Characteristics of Children With Achondroplasia.

NCT03794609

COMPLETED Phase 3

Study to Investigate Efficacy and Safety of PF-04965842 in Subjects Aged 12 Years and Over With Moderate to Severe Atopic Dermatitis With the Option of Rescue Treatment in Flaring Subjects

NCT03627767

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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.