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 8 of 27

COMPLETED Phase 4

Study of the Ease of Use and Correct Use of Placebo ELLIPTA® Inhaler in Subjects With Asthma

NCT02586506

COMPLETED Phase 1

GSK3174998 Alone and With Pembrolizumab in Participants With Advanced Solid Tumors (ENGAGE-1)

NCT02528357

COMPLETED NA

A Study in Dentinal Hypersensitivity (DH) Participants to Assess the Efficacy of an Occluding Dentifrice.

NCT02753075

COMPLETED Phase 1

Safety, Tolerability, Pharmacokinetic (PK), and Pharmacodynamic Study of GSK2881078 and Study to Evaluate the Effect of CYP3A4 Inhibition on PK of GSK2881078

NCT02567773

COMPLETED NA

Efficacy of Two Experimental Oral Rinses in Providing Long Term Relief From Dentinal Hypersensitivity

NCT02542943

COMPLETED Phase 2

Pharmacokinetics and Pharmacodynamics of Mepolizumab Administered Subcutaneously in Children

NCT02377427

COMPLETED Phase 1

Bioavailability Study of Fixed Dose Combination (FDC) Dutasteride and Tamsulosin Hydrochloride (HCl) Relative to One Dutasteride and One Tamsulosin HCl Tablet in Healthy Male Subjects

NCT02509104

COMPLETED Phase 1

Dose Escalation Study to Evaluate the Pharmacokinetics, Safety, and Tolerability of Epelsiban Administered in Repeat Doses in Healthy Women Volunteers

NCT02703181

COMPLETED Phase 4

Effect of Albiglutide, When Added to Standard Blood Glucose Lowering Therapies, on Major Cardiovascular Events in Subjects With Type 2 Diabetes Mellitus

NCT02465515

COMPLETED Phase 4

A Study Evaluating the Effect of Albiglutide on Gallbladder Emptying in Healthy Subjects

NCT02496221

COMPLETED Phase 2

Safety, Tolerability and Clinical Effect of Danirixin in Adults With Influenza

NCT02469298

COMPLETED Phase 3

Follow up Study to Assess Long Term Safety and Outcomes in Infants and Children Born to Mothers Participating in Retosiban Treatment Studies

NCT02292784

COMPLETED Phase 1

A 5-Period, Single Dose, Phase 1 Study in Healthy Elderly Subjects to Assess Relative Bioavailability and Food Effect of Two Oral Formulations of GSK1325756 (Free Base vs HBr Salt) and Food Effect on the HBr Formulation When Given With Omeprazole

NCT02453022

COMPLETED Phase 2

A Dose-Ranging Study Evaluating the Efficacy, Safety, and Tolerability of GSK2140944 in the Treatment of Uncomplicated Urogenital Gonorrhea Caused by Neisseria Gonorrhoeae

NCT02294682

COMPLETED Phase 3

Long-term Access Program (LAP) of Mepolizumab for Subjects Who Participated in Study MEA115921

NCT03298061

COMPLETED NA

Evaluation of Oral Hygiene Products in an In Situ Caries Model

NCT02399163

COMPLETED Phase 2

Safety, Reactogenicity and Immunogenicity Study of Different Formulations of GlaxoSmithKline (GSK) Biologicals' Investigational RSV Vaccine (GSK3003891A), in Healthy Women

NCT02360475

COMPLETED Phase 1

Study to Investigate the Pharmacokinetics (PK), Safety and Tolerability of Retosiban in Healthy Japanese Women

NCT02377414

COMPLETED Phase 3

An Efficacy and Safety Study of Fluticasone Furoate/Vilanterol 100/25 Microgram (mcg) Inhalation Powder, Fluticasone Propionate/Salmeterol 250/50 mcg Inhalation Powder, and Fluticasone Propionate 250 mcg Inhalation Powder in Adults and Adolescents With Persistent Asthma

NCT02301975

TERMINATED Phase 2

Evaluation of Pazopanib on Bleeding in Subjects With Hereditary Haemorrhagic Telangiectasia

NCT02204371

COMPLETED Phase 1

Effects of Dabrafenib on the Single Dose Pharmacokinetics (PK) of Rosuvastatin and Midazolam

NCT02082665

COMPLETED Phase 1

Drug-drug Interaction Study of GSK1278863 With Pioglitazone, Rosuvastatin and Trimethoprim in Healthy Adult Volunteers

NCT02371603

COMPLETED Phase 4

A Study to Evaluate the Effect of the Combination of Umeclidinium (UMEC) and Vilanterol (VI) on Exercise Endurance Time (EET) in Participants With Chronic Obstructive Pulmonary Disease (COPD)

NCT02275052

COMPLETED Phase 1

GSK1278863 Effects on Eccentric Exercise-Induced Muscle Damage

NCT02231190

COMPLETED Phase 1

To Evaluate Effects of GSK2256294 on Pulmonary Artery Pressure in Healthy Volunteers Under Normoxic and Hypoxic Conditions

NCT02262689

COMPLETED Phase 2

Study Assessing Utility of a Clinical Questionnaire to Identify Subjects With Features of Both Asthma and Chronic Obstructive Pulmonary Disease (COPD)

NCT02302417

COMPLETED Phase 3

A 12-Week Efficacy Study of Paracetamol 1000mg Sustained-release Tablets in Patients With Osteoarthritis

NCT02311881

COMPLETED Phase 1

Study to Evaluate the Safety, Tolerability, and Pharmacokinetics of Epelsiban in Healthy Female Volunteers

NCT02257359

COMPLETED Phase 3

Efficacy and Safety Study of Mepolizumab Adjunctive Therapy in Participants With Severe Eosinophilic Asthma on Markers of Asthma Control

NCT02281318

COMPLETED

Meningococcal Quadrivalent CRM-197 Conjugate Vaccine Infant Study

NCT02287688

COMPLETED Phase 2

Assessing the Effectiveness, Immunogenicity and Safety of Meningococcal ABCWY Vaccine Administered to Healthy Adolescents

NCT02285777

COMPLETED Phase 3

Cross-sectional Study for Identification and Description of Severe Asthma Patients

NCT02293265

COMPLETED Phase 3

Safety and Efficacy of Albiglutide + Insulin Glargine Versus Insulin Lispro + Insulin Glargine Subjects With Type 2 Diabetes Mellitus

NCT02229227

COMPLETED Phase 2

Safety and Immunogenicity of the Liquid Formulation of Group B Streptococcus Trivalent Vaccine and of the Lyophilized Formulation of Group B Streptococcus Trivalent Vaccine

NCT02270944

TERMINATED Phase 1

A Repeat Dose Pharmacokinetic (PK) and Safety Study of GSK2838232 With and Without Ritonavir (RTV) Conducted in Healthy Subjects

NCT02289495

COMPLETED Phase 1

Single Dose, Pharmacokinetic, Safety, Tolerability and QTc Study of GSK1278863 in Healthy Volunteers

NCT02293148

TERMINATED Phase 1

A Single Dose Pharmacokinetic (PK) and Safety Study of GSK2838232 With and Without Ritonavir (RTV) Conducted in Healthy Subjects

NCT02289482

COMPLETED Phase 1

Dose-finding Study of GSK2636771 When Administered in Combination With Enzalutamide in Male Subjects With Metastatic Castration-Resistant Prostate Cancer

NCT02215096

COMPLETED Phase 1

Drug-drug Interaction Study of Eltrombopag and Cyclosporine in Healthy Subjects

NCT02281370

COMPLETED Phase 1

Study to Assess the Pharmacokinetics of GSK1278863 in Subjects With End Stage Renal Disease Undergoing Peritoneal Dialysis

NCT02243306

COMPLETED Phase 1

Placebo and Moxifloxacin Controlled Cardiac Conduction Study of GSK2140944 in Healthy Volunteers

NCT02257398

COMPLETED Phase 3

Study to Evaluate the Immunogenicity and Safety of GlaxoSmithKline (GSK) Biologicals' Quadrivalent Influenza Vaccine (GSK2282512A) Compared to Fluzone® Quadrivalent in Children 6 to 35 Months of Age

NCT02242643

COMPLETED Phase 1

Pharmacokinetics Study Comparing Topical Diclofenac/Menthol Gels With Voltaren Gel and Oral Diclofenac Sodium

NCT02201238

COMPLETED

Meningococcal Quadrivalent CRM-197 Conjugate Vaccine Pregnancy Registry

NCT02223637

COMPLETED Phase 3

The Purpose of the This Study is to Evaluate the Spirometric Effect (Trough FEV1) of Umeclidinium/Vilanterol 62.5/25 mcg Once Daily Compared With Tiotropium 18mcg Once Daily Over a a 12-week Treatment Period in Subjects With COPD Who Continue to Have Symptoms on Tiotropium

NCT01899742

COMPLETED Phase 2

Clinical Study Investigating the Efficacy of a Mouthwash in Providing Long Term Relief From Dentinal Hypersensitivity

NCT02226562

COMPLETED Phase 3

A 12-week Study to Evaluate the Efficacy and Safety of Umeclidinium Compared With Tiotropium in Subjects With Chronic Obstructive Pulmonary Disease

NCT02207829

COMPLETED Phase 3

A Phase IIIb Study to Evaluate the Efficacy of Umeclidinium/Vilanterol (UMEC/VI) in Subjects With Chronic Obstructive Pulmonary Disease (COPD)

NCT02152605

TERMINATED Phase 1

A Study to Evaluate Pharmacokinetics, Pharmacodynamics and Tissue Concentrations of Epelsiban

NCT02213029

COMPLETED Phase 2

A Study to Evaluate the Effect of Camicinal on Gastroparesis Symptoms in Type 1 and 2 Diabetic Subjects With Gastroparesis

NCT02210000

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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.

Every figure on PlainTrial is rendered directly from the ClinicalTrials.gov registry, no number is typed in by an editor. GlaxoSmithKline pipeline card: 1,345 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.