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 5 of 27

TERMINATED Phase 2

Safety, Tolerability, Efficacy and Dose-response of GSK2831781 in Ulcerative Colitis

NCT03893565

COMPLETED Phase 1

Respiratory Syncytial Virus (RSV) Investigational Vaccine in Infants Aged 6 and 7 Months Likely to be Unexposed to RSV

NCT03636906

COMPLETED Phase 1

Study Evaluating Safety, Tolerability and Clinical Activity of GSK2857916 in Combination With Pembrolizumab in Subjects With Relapsed/Refractory Multiple Myeloma (RRMM)

NCT03848845

COMPLETED Phase 2

A Study to Evaluate the Efficacy, Immunogenicity and Safety in a Sporozoite Challenge Model of a Fractional Booster Dose of GSK Biologicals' Candidate Malaria Vaccine Administered to Previously Vaccinated Healthy Malaria-naïve Adults

NCT03824236

COMPLETED Phase 2

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

NCT03739710

COMPLETED Phase 2

Platform Trial of Novel Regimens Versus Standard of Care (SoC) in Participants With Non-small Cell Lung Cancer (NSCLC) - Sub-study 1

NCT05553808

COMPLETED Phase 1

A Single Ascending Dose Study in Adults (Stage 1) and Single Ascending Dose-Finding Study (Stage 2) in Elderly Subjects With ASP3772, A Pneumococcal Vaccine

NCT03803202

COMPLETED Phase 1

A Study to Assess the Safety, Reactogenicity and Immune Response of GlaxoSmithKline (GSK) Biologicals' Investigational Respiratory Syncytial Virus (RSV) Vaccine (GSK3844766A) in Older Adults

NCT03814590

COMPLETED Phase 4

A Study to Investigate Food Occlusion Efficacy of a Denture Adhesive in Denture Wearers

NCT03709810

TERMINATED Phase 1

Pilot Immunotherapy Study With Letetresgene Autoleucel (Lete-cel, GSK3377794)T-cells in New York Esophageal Squamous Cell Carcinoma-1 (NY-ESO-1)/ LAGE-1a-positive Advanced Non-small Cell Lung Cancer (NSCLC) Either Alone or in Combination With Pembrolizumab

NCT03709706

COMPLETED Phase 1

GSK3359609 Plus Tremelimumab for the Treatment of Advanced Solid Tumors

NCT03693612

TERMINATED Phase 2

First-time-in-human (FTIH) Study of GSK3145095 Alone and in Combination With Other Anticancer Agents in Adults With Advanced Solid Tumors

NCT03681951

COMPLETED Phase 1

A Study to Evaluate Different Dose Levels of GlaxoSmithKline (GSK) Biologicals' Investigational Respiratory Syncytial Virus (RSV) Vaccine (GSK3888550A), Based on the Vaccine Safety and the Antibodies (Body Defences) Produced Following Vaccine Administration, When Given to Healthy Non-pregnant Women

NCT03674177

TERMINATED Phase 1

First Time in Humans (FTIH) Study of GSK3368715 in Participants With Solid Tumors and Diffuse Large B-cell Lymphoma (DLBCL)

NCT03666988

TERMINATED Phase 1

Study to Investigate the Safety and Clinical Activity of GSK3326595 and Other Agents to Treat Myelodysplastic Syndrome (MDS) and Acute Myeloid Leukemia (AML)

NCT03614728

COMPLETED Phase 1

To Evaluate Safety, Tolerability, and Clinical Activity of the Antibody-drug Conjugate, GSK2857916 Administered in Combination With Lenalidomide Plus Dexamethasone (Arm A), or in Combination With Bortezomib Plus Dexamethasone (Arm B) in Participants With Relapsed/Refractory Multiple Myeloma (RRMM)

NCT03544281

COMPLETED Phase 3

Anemia Studies in Chronic Kidney Disease (CKD): Erythropoiesis Via a Novel Prolyl Hydroxylase Inhibitor (PHI) Daprodustat-Three-times Weekly Dosing in Dialysis (ASCEND-TD)

NCT03400033

COMPLETED Phase 1

First Time in Human (FTIH) Study to Evaluate the Safety, Pharmacokinetics, and Pharmacodynamics of Single and Repeat Doses of GSK3439171A in Healthy Subjects and to Assess Food Effect

NCT03627494

COMPLETED Phase 2

A Study to Evaluate the Efficacy, Safety and Immunogenicity of a Vaccine Designed to Protect Against Infection With Shigella Sonnei in Healthy Adults

NCT03527173

COMPLETED Phase 3

Safety and Immunogenicity of GSK Meningococcal Group B Vaccine and 13-valent Pneumococcal Vaccine Administered Concomitantly With Routine Infant Vaccines to Healthy Infants

NCT03621670

COMPLETED Phase 2

Pharmacokinetic Study of Oral Gepotidacin (GSK2140944) in Subjects With Uncomplicated Urinary Tract Infection (Acute Cystitis)

NCT03568942

COMPLETED

Sensor and Electronic Health Records (EHR) Integration Pilot Study

NCT03357341

COMPLETED Phase 4

A Randomized Study, Comparing Fluticasone Furoate/Umeclidinium/Vilanterol (FF/UMEC /VI) Single Inhaler Triple Therapy, Versus Multiple Inhaler Therapy (Budesonide/Formoterol Plus Tiotropium) in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

NCT03478696

COMPLETED Phase 4

A Randomized Study, Comparing Fluticasone Furoate/Umeclidinium/Vilanterol (FF/UMEC/VI) Single Inhaler Triple Therapy, Versus Multiple Inhaler Therapy (Budesonide/Formoterol Plus Tiotropium) in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

NCT03478683

COMPLETED Phase 2

A Study to Investigate the Efficacy and Safety of Two Doses of GSK2857916 in Participants With Multiple Myeloma Who Have Failed Prior Treatment With an Anti-CD38 Antibody

NCT03525678

COMPLETED Phase 1

To Assess the Bioequivalence of the 4mg Prototype Mini Nicotine Lozenge to the Reference Product (Nicorette) in Healthy Smokers

NCT03543137

COMPLETED Phase 4

An Open-label Study to Evaluate Correct Use and Ease of Use of the ELLIPTA DPI in Pediatric Subjects With Asthma

NCT03478657

COMPLETED Phase 1

A Bioequivalence Study of Two Nicotine Lozenges in Fasting Conditions in Healthy Smokers

NCT03541044

COMPLETED Phase 1

Pharmacokinetics (PK) Study of Gepotidacin (GSK2140944) in Adult Subjects With Varying Degrees of Hepatic Impairment and in Matched Control Subjects With Normal Hepatic Function

NCT03562117

COMPLETED

A Study to Assess Frailty of Subjects During ZOSTER-006 and ZOSTER-022

NCT03563183

COMPLETED

Chronic Obstructive Pulmonary Disease (COPD) Dual Therapy Burden of Illness

NCT03543176

COMPLETED

The Safety of Boostrix Following Routine Immunization of Pregnant Women

NCT03463577

COMPLETED Phase 3

Immunogenicity and Safety Study of GSK Biologicals' Herpes Zoster Vaccine GSK1437173A When Co-administered With Prevenar13 in Adults Aged 50 Years and Older

NCT03439657

COMPLETED Phase 4

A Comparative Study Between Fluticasone Furoate/Umeclidinium/Vilanterol (FF/UMEC/VI) Single Inhaler Triple Therapy Versus Tiotropium Monotherapy in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

NCT03474081

COMPLETED Phase 1

Study of a Combination of GSK1795091 and Immunotherapies in Subjects With Advanced Solid Tumors

NCT03447314

COMPLETED Phase 1

GSK1325756 Relative Bioavailability Study in Healthy Elderly Subjects

NCT03457727

COMPLETED Phase 3

Anemia Studies in Chronic Kidney Disease (CKD): Erythropoiesis Via a Novel Prolyl Hydroxylase Inhibitor (PHI) Daprodustat in Non-Dialysis Subjects Evaluating Hemoglobin (Hgb) and Quality of Life (ASCEND-NHQ)

NCT03409107

COMPLETED Phase 1

To Investigate the Gastrointestinal Behaviour of Two Triple Combination Products in Healthy Male Volunteers

NCT03415243

COMPLETED Phase 3

A Study to Evaluate the Efficacy and Safety of Belimumab Administered in Combination With Rituximab to Adult Subjects With Systemic Lupus Erythematosus (SLE) - BLISS-BELIEVE

NCT03312907

COMPLETED Phase 2

Study to Evaluate the Safety and Efficacy of 13 Weeks of the Selective Androgen Receptor Modulator (SARM) GSK2881078 in Chronic Obstructive Pulmonary Disease (COPD)

NCT03359473

COMPLETED Phase 2

A Dose-escalation Study in Subjects With Pulmonary Arterial Hypertension (PAH)

NCT03177603

COMPLETED Phase 4

A Clinical Study to Evaluate the Effect of the Connected Inhaler System (CIS) on Adherence to Maintenance Therapy in Poorly Controlled Asthmatic Subjects

NCT03380429

COMPLETED

Targeted Literature Review and Subject Interviews in Wiskott-Aldrich Syndrome (WAS)

NCT03399461

COMPLETED Phase 1

A Study to Evaluate the Effect of Itraconazole on the Pharmacokinetics (PK) of Nemiralisib

NCT03398421

COMPLETED

Patient-Reported Outcome Measurement Information System (PROMIS) Physical Function

NCT03351140

COMPLETED

Perceptions of Cell and Gene Therapies (CGT) for the Treatment of Cancer

NCT03336567

COMPLETED

A Study to Evaluate Conceptual Saturation of Evaluating Respiratory Symptoms (E-RS) in Subjects With Asthma

NCT03344406

TERMINATED Phase 2

Dose Finding Study of Nemiralisib (GSK2269557) in Subjects With an Acute Moderate or Severe Exacerbation of Chronic Obstructive Pulmonary Disease (COPD)

NCT03345407

COMPLETED Phase 2

A Study to Test if the Vaccine is Working Well in Chronic Obstructive Pulmonary Disease (COPD) Patients Aged 40 to 80 Years Old to Reduce Episodes of Worsening Symptoms and to Gather Further Information on Safety and Immune Response.

NCT03281876

COMPLETED

Qualitative Research to Explore Treatment Preference in Pulmonary Arterial Hypertension (PAH) Subjects

NCT03304548

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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.