GlaxoSmithKline

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, GlaxoSmithKline sits in the top decile of US sponsors by registered trial count (#17 of 15,742 sponsors by registered trial count).

1,345 total trials 50 currently recruiting 1130 completed early-phase tilt top decile by trial count

GlaxoSmithKline: 1,345 sponsored US clinical trials, 50 recruiting.

GlaxoSmithKline sponsors 1,345 registered US clinical trials on ClinicalTrials.gov, 50 of them currently recruiting, and 1,130 completed. 486 of these trials are in Phase 3-4 (later-stage) and 791 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Pulmonary Disease, Chronic Obstructive, with 30 trials.

Top-decile sponsor footprint

GlaxoSmithKline ranks in the top decile of sponsors by registered trial count (#17 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 66/100

1,130 of 1,249 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (90.5%), 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

1,345 total, page 4 of 27

COMPLETED Phase 3

A Study of 3 Lots of an Investigational Vaccine Against Respiratory Syncytial Virus (RSV) in Adults Aged 60 Years and Above

NCT05059301

COMPLETED Phase 2

A Study of BOS-580 in Obese Subjects at Risk for, or With Biopsy-confirmed, Nonalcoholic Steatohepatitis (NASH) With an Extension

NCT04880031

COMPLETED Phase 1

Phase 1 Study of GSK3228836 Pharmacokinetics in Participants With Hepatic Impairment

NCT04971928

COMPLETED Phase 3

Global Linerixibat Itch Study of Efficacy and Safety in Primary Biliary Cholangitis (PBC) (GLISTEN)

NCT04950127

TERMINATED Phase 3

A Study on the Safety and Immune Response to an Unadjuvanted RSV Maternal Vaccine, in High Risk Pregnant Women Aged 15 to 49 Years and Infants Born to the Vaccinated Mothers

NCT04980391

COMPLETED Phase 1

A Study on the Safety, Effectiveness and Immune Response of Meningococcal Combined ABCWY Vaccine in Healthy Adolescents and Adults

NCT04886154

COMPLETED

An Epidemiological Study to Assess Performance of Using Healthcare Tools to Understand Genital Herpes Simplex Virus-2 (HSV-2) in Patients ≥ 18 Years of Age in the United States and Europe.

NCT04950712

COMPLETED Phase 3

Efficacy Study of GSK's Investigational Respiratory Syncytial Virus (RSV) Vaccine in Adults Aged 60 Years and Above

NCT04886596

TERMINATED Phase 2

Molecular Disease Characterization Initiative (MDCI)

NCT04772053

COMPLETED Phase 3

Placebo-controlled Efficacy and Safety Study of GSK3511294 (Depemokimab) in Participants With Severe Asthma With an Eosinophilic Phenotype

NCT04719832

COMPLETED Phase 2

A Study to Evaluate the Safety and Immunogenicity of GlaxoSmithKline Biologicals' Influenza Vaccine GSK3206641A Administered in Adults 18 to 64 Years of Age and 65 Years of Age and Older

NCT04789577

TERMINATED Phase 2

Platform Trial of Novel Regimens Versus Standard of Care (SoC) in Participants With Non-small Cell Lung Cancer (NSCLC) - Sub-study 2

NCT06790303

COMPLETED NA

Sun Protection Factor (SPF) Determination of Two Sunscreen-Containing Lip Balms

NCT04749459

TERMINATED Phase 1

A Study on the Reactogenicity, Safety and Immune Response of a Vaccine Against Herpes Simplex Virus (HSV)-2 in Healthy Participants Aged 18-40 Years

NCT04762511

COMPLETED Phase 1

A Study of the Safety of and Immune Response to Varying Doses of a Vaccine Against COVID-19 in Healthy Adults

NCT04758962

COMPLETED Phase 3

A Study of GSK3511294 (Depemokimab) in Participants With Severe Asthma With an Eosinophilic Phenotype

NCT04718103

COMPLETED Phase 2

Study of Sequential GSK3228836 and Peginterferon Treatment in Participants With Chronic Hepatitis B (CHB)

NCT04676724

COMPLETED Phase 3

A Study of GSK3511294 (Depemokimab) Compared With Mepolizumab or Benralizumab in Participants With Severe Asthma With an Eosinophilic Phenotype

NCT04718389

COMPLETED Phase 3

Immunogenicity and Safety Study of GSK's MenABCWY Vaccine in Healthy Adolescents and Adults Previously Primed With MenACWY Vaccine

NCT04707391

TERMINATED Phase 3

Characterization of Corneal Epithelial Changes in Participants Treated With Belantamab Mafodotin

NCT04549363

COMPLETED Phase 1

Comparison of Daprodustat Formulations Produced by Two Methods of Manufacture for Bioequivalence and Dissolution in Healthy Participants

NCT04640311

COMPLETED Phase 2

Extension Study to Evaluate the Safety and Immunogenicity of a Revaccination Dose of the RSVPreF3 OA Investigational Vaccine in Adults 60 Years and Older Who Participated in the RSV OA=ADJ-002 Study

NCT04657198

TERMINATED Phase 3

A Phase III, Double-blind Study to Assess Safety and Efficacy of an RSV Maternal Unadjuvanted Vaccine, in Pregnant Women and Infants Born to Vaccinated Mothers

NCT04605159

TERMINATED Phase 2

Efficacy Comparison of Dostarlimab Plus Chemotherapy Versus Pembrolizumab Plus Chemotherapy in Participants With Metastatic Non-squamous Non-small Cell Lung Cancer (NSCLC)

NCT04581824

TERMINATED Phase 1

A Study to Evaluate the Efficacy and Safety of Bintrafusp Alfa (M7824) Monotherapy in Metastatic or Locally Advanced Urothelial Cancer

NCT04349280

COMPLETED Phase 2

A Mechanistic Study of GSK3228836 With Fine Needle Aspiration (FNA) in Participants With Chronic Hepatitis B

NCT04544956

TERMINATED Phase 1

A Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of GSK2798745 in Participants With Diabetic Macular Edema

NCT04292912

COMPLETED Phase 3

Study to Assess the Safety and Immunogenicity of GSK Meningococcal Group B Vaccine When Administered Concomitantly With GSK Meningococcal MenACWY Conjugate Vaccine in Healthy Subjects of 16-18 Years of Age

NCT04318548

COMPLETED Phase 1

Drug-drug Interaction Study of Gepotidacin

NCT04493931

COMPLETED Phase 3

Effectiveness of GlaxoSmithKline Biologicals S.A's Meningococcal Group B and Combined ABCWY Vaccines in Healthy Adolescents and Young Adults

NCT04502693

TERMINATED Phase 3

Study of GSK3359609 With Pembrolizumab and 5-fluorouracil (5-FU)-Platinum Chemotherapy in Participants With Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma

NCT04428333

COMPLETED Phase 2

A Study of GSK3228836 in Participants With Chronic Hepatitis B (CHB)

NCT04449029

COMPLETED Phase 1

A Study to Evaluate the Safety and Tolerability, Pharmacokinetics (PK) and Pharmacodynamics (PD) of Melrilimab (GSK3772847) in Healthy Participants

NCT04366349

COMPLETED Phase 2

Investigating Otilimab in Patients With Severe Pulmonary COVID-19 Related Disease

NCT04376684

TERMINATED Phase 3

Long-term Safety and Efficacy of GSK3196165 (Otilimab) in the Treatment of Rheumatoid Arthritis (RA)

NCT04333147

COMPLETED Phase 3

Comparative Study to Evaluate Efficacy and Safety of Gepotidacin to Nitrofurantoin in Treatment of Uncomplicated Urinary Tract Infection (UTI)

NCT04187144

TERMINATED Phase 3

Study of GSK3359609 and Pembrolizumab in Programmed Death Receptor 1-ligand 1 (PD-L1) Positive Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma

NCT04128696

COMPLETED Phase 2

A Study of a Vaccine Against Respiratory Syncytial Virus (RSV) When Given Alone and Together With a Vaccine Against Diphtheria, Pertussis and Tetanus (Tdap) Viruses Followed by a 2nd Dose of the RSV Vaccine to Healthy Non-Pregnant Women

NCT04138056

COMPLETED Phase 2

Study of Safety, Reactogenicity and Immunogenicity of GlaxoSmithKline's (GSK)Respiratory Syncytial Virus (RSV)Maternal Unadjuvanted Vaccine in Healthy Pregnant Women (Aged 18 to 40 Years) and Their Infants

NCT04126213

COMPLETED Phase 3

Efficacy and Safety of GSK3196165 (Otilimab) Versus Placebo and Sarilumab in Participants With Moderately to Severely Active Rheumatoid Arthritis Who Have an Inadequate Response to Biological Disease-modifying Antirheumatic Drug (DMARDs) and/or Janus Kinase (JAK) Inhibitors

NCT04134728

COMPLETED Phase 3

Mepolizumab as Add-on Treatment IN Participants With COPD Characterized by Frequent Exacerbations and Eosinophil Level

NCT04133909

COMPLETED Phase 3

A Study Evaluating Efficacy and Safety of Gepotidacin Compared With Ceftriaxone Plus Azithromycin in the Treatment of Uncomplicated Urogenital Gonorrhea

NCT04010539

COMPLETED Phase 3

A Study to Evaluate Efficacy and Safety of Gepotidacin in the Treatment of Uncomplicated Urinary Tract Infection (UTI)

NCT04020341

COMPLETED Phase 4

A Clinical Study Investigating the Efficacy of a Stannous Fluoride Dentifrice in Improving Gingival Health After Twice Daily Use for 3 Weeks

NCT04050722

TERMINATED Phase 1

Dose Escalation and Expansion Study of GSK525762 in Combination With Fulvestrant in Participants With Hormone Receptor-positive (HR+)/Human Epidermal Growth Factor Receptor 2 Negative (HER2-) Advanced or Metastatic Breast Cancer

NCT02964507

COMPLETED Phase 1

Pharmacokinetics of Gepotidacin Tablets in Adults and Adolescents Subjects

NCT04079790

COMPLETED Phase 1

A Study to Evaluate the Safety and Immunogenicity of GlaxoSmithKline (GSK) Biologicals' Experimental Rabies Vaccine in Healthy Adults

NCT04062669

COMPLETED Phase 2

Anemia Studies in CKD: Erythropoiesis Via a Novel Prolyl Hydroxylase Inhibitor (PHI) Daprodustat- Iron (ASCEND: Fe)

NCT03457701

COMPLETED Phase 3

Safety Study of 2 Formulations of GSK's Human Rotavirus (HRV) Vaccine (444563), in Healthy Infants Starting at Age 6-12 Weeks

NCT03954743

TERMINATED Phase 3

Efficacy and Safety of GSK3196165 Versus Placebo and Tofacitinib in Participants With Moderately to Severely Active Rheumatoid Arthritis Who Have an Inadequate Response to Conventional Synthetic (cs)/Biologic (b) Disease Modifying Anti-rheumatic Drugs (DMARDs)

NCT03970837

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Phase Distribution

PhaseTrial count
Phase 1 440
Phase 2 351
Phase 3 377
Phase 4 109

What is open in the GlaxoSmithKline pipeline

50 recruiting of 1,345 indexed (4% open); 1,130 completed (84%).

Phase mix: 486 late (III/IV) vs 791 early (I/II) (early-phase heavy).

Top condition: Pulmonary Disease, Chronic Obstructive (30 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.

GlaxoSmithKline: open-pipeline peers nationwide

Peers matched on 1,345 registered trials and 4% open enrollment, not the therapeutic-area sidebar.

GlaxoSmithKline 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 05001,0001,500 0%5%10%15% Total trials Recruiting share GlaxoSmithKlineEli Lilly and CompanyUniversity of MichiganNovartis PharmaceuticalsAstraZenecaStryker OrthopaedicsUS Oncology ResearchOtsuka Pharmaceutical Development & CommercializationTeva Branded Pharmaceutical Products R&D
GlaxoSmithKline 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).

GlaxoSmithKline 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 1,345 trials (± recruiting share)

Sponsors near 4% open enrollment (± trial volume)

What to do with this GlaxoSmithKline page

1,345 registered trials is a research-attention snapshot, not an endorsement of GlaxoSmithKline or any single study.

Trial and recruiting counts reflect ClinicalTrials.gov registry status as of the data vintage above; individual trial eligibility and enrollment status can change.

GlaxoSmithKline pipeline card: 1,345 registered trials from official public datasets.Report a data error.