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 35 of 37

COMPLETED Phase 1

CP-481,715 Nickel Allergy Study.

NCT00141180

COMPLETED Phase 2

AG-013736 (Axitinib) In Patients With Poor Prognosis Acute Myeloid Leukemia (AML) Or Myelodysplastic Syndrome (MDS)

NCT00071006

TERMINATED Phase 2

A Study to Evaluate the Efficacy and Safety of CP-101,606 in Subjects With an Acute Stroke

NCT00073476

COMPLETED Phase 3

Long-Term Safety Of DVS-233 SR In Patients With Major Depressive Disorder

NCT01309542

COMPLETED Phase 3

Study of IV Edotecarin Vs Temozolomide or Carmustine (BCNU) or Lomustine (CCNU) in Patients With Glioblastoma Multiforme

NCT00068952

COMPLETED Phase 1

Study Evaluating CMC-544 In B-Cell Non-Hodgkin's Lymphoma

NCT00073749

COMPLETED Phase 3

Study Evaluating Interferon And CCI-779 In Advanced Renal Cell Carcinoma

NCT00065468

COMPLETED Phase 1

Safety, Tolerance and Pharmacokinetics of Anidulafungin in Immunocompromised Children Ages 2-17

NCT00056381

COMPLETED Phase 2

Two Phase Extension Trial of SP668 to Investigate the Safety and Tolerability of Sustained Release Fesoterodine in Subjects With Overactive Bladder: a Double-Blind Phase Followed by an Open-Label Extension Phase

NCT00220389

COMPLETED Phase 2

Study in Women With Metastatic Breast Cancer Whose Cancer Has Gotten Worse After Anthracycline and Taxane Therapy

NCT00067314

COMPLETED Phase 3

A Twelve-Week Study of Varenicline for Safety and Efficacy in Comparison With Placebo and Zyban for Smoking Cessation

NCT00143364

COMPLETED Phase 3

A Twelve-Week Study of Varenicline for Safety and Efficacy in Comparison With Placebo and Zyban for Smoking Cessation

NCT00141206

COMPLETED Phase 2

CPG 7909 Injection in Non-Small Cell Lung Cancer

NCT00070629

COMPLETED Phase 3

A Multicenter, Randomized, Double-Blind, Double-Dummy Study Of Azithromycin SR Versus Amoxicillin For The Treatment Of Strep Throat In Children

NCT00643149

COMPLETED Phase 4

A Study To Compare The Efficacy And Safety Of Pegvisomant To That Of Sandostatin Lar Depot In Patients With Acromegaly

NCT00068042

COMPLETED Phase 3

A 52-Week Multicenter Study Evaluating the Safety and Efficacy of Varenicline for the Maintenance of Smoking Cessation

NCT00143286

COMPLETED Phase 3

A Multicenter, Randomized, Double-Blind, Double-Dummy Trial of Azithromycin SR Compared With Levofloxacin for the Treatment of Mild to Moderate Pneumonia in Adult Patients

NCT00643734

COMPLETED Phase 2

Treatment With SU11248 in Patients With Neuroendocrine Tumors

NCT00056693

COMPLETED Phase 3

Study Evaluating Sumanirole for the Treatment of the Signs and Symptoms of Early Parkinson's Disease

NCT00058838

COMPLETED NA

Continuing Access to Axitinib (A406- AG- 013736 ) For Patients Previously Receiving AG 013736 In Clinical Trials

NCT00828919

COMPLETED Phase 3

The Safety and Efficacy of Anidulafungin Versus Comparator in Patients With Candidemia and Invasive Candidiasis

NCT00056368

TERMINATED Phase 3

A Long-Term, Open-Label Study to Evaluate the Safety of Sitaxsentan Sodium Treatment in Patients With Pulmonary Arterial Hypertension

NCT00811018

TERMINATED Phase 2

Long-Term Safety Study of Inhaled Insulin: An Up to Four-Year Extension of Therapy in Subjects With Type 1 or Type 2 Diabetes Mellitus

NCT00143247

COMPLETED Phase 3

Trial Of Irinotecan In Combination With Three Methods Of Administration Of Fluoropyrimidine.

NCT00101686

COMPLETED Phase 4

A Study to Determine if Antibiotics Prevent Infection in the Pancreas of Patients Where Part of the Pancreas Has Died

NCT00061438

COMPLETED Phase 1

Pharmacokinetics And Dialysability Of CP-690,550 In Subjects With End-Stage Renal Disease

NCT01710020

COMPLETED Phase 4

Efficacy and Safety of Valdecoxib and Naproxen in Treating the Signs and Symptoms of Rheumatoid Arthritis (RA) in a Severe Rheumatoid Arthritis Patients

NCT00650455

COMPLETED Phase 3

A Comparison Of Valdecoxib 20 Mg Twice Daily and 40 Mg Daily and Placebo In The Treatment Of Sore Throat

NCT00647829

COMPLETED Phase 3

A One Year Clinical Trial Assessing the Usefulness and Safety of Inhaled Insulin in Diabetics With Asthma

NCT00139659

COMPLETED Phase 2

Study of the Safety and Efficacy of SU-011,248 in Adult Patients With Advanced Kidney Cancer

NCT00054886

COMPLETED Phase 2

A Phase 2, Randomized, Open-Label Study Of Single Agent CI-1033 In Patients With Advanced Non-Small Cell Lung Cancer

NCT00050830

COMPLETED Phase 3

A Multicenter, Randomized, Double-Blind, Double-Dummy Comparative Trial of Azithromycin Sustained Release Versus 3-Day Azithromycin for the Treatment of Strep Throat in Adolescents and Adults

NCT00644293

COMPLETED Phase 3

A Multicenter, Randomized, Double-Blind, Double-Dummy Trial of Azithromycin SR Compared With Levofloxacin for the Treatment of Sinus Infections in Adults

NCT00643409

COMPLETED Phase 3

Demonstrate Exubera Works As Well As Avandia When Added To Sulfonylurea + Metformin In Controlling Glucose

NCT00150410

COMPLETED Phase 3

A Study Comparing the Efficacy and Safety of Valdecoxib Plus Parecoxib Versus Valdecoxib Plus Placebo for the Treatment of Pain After Coronary Artery Bypass Surgery

NCT00636064

COMPLETED Phase 3

A Multicenter, Randomized, Double-Blind, Double-Dummy Trial of Azithromycin SR Compared With Levofloxacin for the Treatment of Acute Symptoms of Chronic Bronchitis

NCT00644449

COMPLETED Phase 3

A Multicenter, Randomized, Double-Blind, Double-Dummy Trial of Azithromycin SR Compared With Clarithromycin Extended Release for the Treatment of Pneumonia in Adult Patients

NCT00643227

COMPLETED Phase 3

A Single, High-Dose Azithromycin Extended Release (60 mg/kg) Compared With 10 Days of High-Dose Amoxicillin Clavulanate in Children With Ear Infections at High Risk of Persistent/Recurrent Ear Infections

NCT00643292

TERMINATED Phase 3

A Study to Determine Effective Prophylaxis and Treatment of Nelfinavir-Associated Diarrhea

NCT00650637

TERMINATED Phase 3

A One Year Clinical Trial Assessing the Usefulness and Safety of Inhaled Insulin in Diabetics With COPD

NCT00138671

COMPLETED Phase 2

A Phase II Study of CI-1033 in Treating Patients With Metastatic (Stage IV) Breast Cancer

NCT00051051

COMPLETED Phase 3

Analgesic Efficacy Of Valdecoxib In Patients Following Bunion Surgery

NCT00653354

COMPLETED Phase 1

PH 1 Evaluation Of Oral CI-1033 In Combination With Paclitaxel/ Carboplatin As 1st Line Chemotherapy In NSCLC Patients

NCT00174356

COMPLETED Phase 4

Microbiologic Response With Linezolid And Vancomycin In Ventilator-Associated Pneumonia Due To Methicillin Resistant Staphylococcus Aureus

NCT00572559

COMPLETED Phase 3

A Randomized, Double-Blind Study of the Efficacy and Safety of Valdecoxib Compared to Placebo for Treatment of Post- Cholecystectomy Surgery Pain

NCT00661635

COMPLETED Phase 3

A Study Of Diflucan In Children With Ringworm Of The Scalp

NCT00645242

COMPLETED Phase 1

Multiple Dose Escalation Study In Medically Stable Subjects With Psoriasis

NCT01736696

COMPLETED Phase 1

First In Human, Phase 1 Study of AG013736 In Patients With Solid Tumors

NCT01469052

TERMINATED Phase 4

A Study to Evaluate the Efficacy of Somatropin in Adults With Growth Hormone Deficiency Caused by Trauma and/or Head Injury

NCT00638053

COMPLETED Phase 3

Analgesic Efficacy And Safety of Valdecoxib For Treatment Of Post-Surgical Pain From Bunionectomy Surgery

NCT00683137

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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.