Gilead Sciences

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, Gilead Sciences sits in the top decile of US sponsors by registered trial count (#71 of 15,742 sponsors by registered trial count).

504 total trials 26 currently recruiting 346 completed early-phase tilt top decile by trial count

Gilead Sciences: 504 sponsored US clinical trials, 26 recruiting.

Gilead Sciences sponsors 504 registered US clinical trials on ClinicalTrials.gov, 26 of them currently recruiting, and 346 completed. 164 of these trials are in Phase 3-4 (later-stage) and 317 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is HIV-1-infection, with 20 trials.

Top-decile sponsor footprint

Gilead Sciences ranks in the top decile of sponsors by registered trial count (#71 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 34/100

346 of 445 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (77.8%), 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

504 total, page 7 of 11

COMPLETED Phase 1

A Phase 1a Trial Assessing the Safety, Tolerability, and Immunogenicity of GS-4774 (GI-13020) at Various Dose Levels and Regimens in Healthy Adults

NCT01779505

COMPLETED Phase 3

Safety and Efficacy of Ledipasvir/Sofosbuvir Fixed-Dose Combination ± Ribavirin in Treatment-Experienced Subjects With Genotype 1 HCV Infection

NCT01768286

COMPLETED Phase 3

Study to Evaluate the Safety and Efficacy of E/C/F/TAF (Genvoya®) Versus E/C/F/TDF (Stribild®) in HIV-1 Positive, Antiretroviral Treatment-Naive Adults

NCT01780506

COMPLETED Phase 1

Study of Sacituzumab Govitecan-hziy (IMMU-132) in Adults With Epithelial Cancer

NCT01631552

COMPLETED Phase 2

Pharmacokinetics, Safety, and Efficacy of Elvitegravir/Cobicistat/Emtricitabine/Tenofovir Disoproxil Fumarate Single Tablet Regimen (STR) in Adolescents

NCT01721109

TERMINATED Phase 2

Safety and Efficacy of Simtuzumab (SIM, GS-6624) in Adults With Advanced Liver Fibrosis But Not Cirrhosis Secondary to Non-Alcoholic Steatohepatitis (NASH)

NCT01672866

TERMINATED Phase 3

Efficacy and Safety of Idelalisib in Combination With Ofatumumab for Previously Treated Chronic Lymphocytic Leukemia

NCT01659021

COMPLETED Phase 3

Phase 3 Study of Aztreonam for Inhalation Solution (AZLI) in a Continuous Alternating Therapy Regimen for the Treatment of Chronic Pseudomonas Aeruginosa Infection in Patients With CF

NCT01641822

COMPLETED Phase 1

Study to Evaluate the Safety, Tolerability, Pharmacokinetics, and Antiviral Activity of Velpatasvir in Participants With Chronic HCV Infection

NCT01740791

COMPLETED Phase 2

Safety and Efficacy of Sofosbuvir and Ribavirin in Adults With Recurrent Chronic Hepatitis C Virus (HCV) Post Liver Transplant

NCT01687270

COMPLETED

Surveillance Study of Respiratory Syncytial Virus Infection (RSV) in Subjects < 24 Months of Age

NCT01754428

TERMINATED Phase 2

Simtuzumab (SIM, GS-6624) in the Treatment of Cirrhosis Due to NASH

NCT01672879

COMPLETED Phase 3

Safety and Efficacy of E/C/F/TDF Versus RTV-Boosted ATV Plus FTC/TDF in HIV-1 Infected, Antiretroviral Treatment-Naive Women

NCT01705574

TERMINATED Phase 2

Long-Term Safety Study of GS-6624 in Adults With Idiopathic Pulmonary Fibrosis (IPF)

NCT01759511

COMPLETED Phase 2

Study of Simtuzumab in HIV and/or Hepatitis C- Infected Adults With Liver Fibrosis

NCT01707472

TERMINATED Phase 3

Extension Study of Idelalisib in Participants With Chronic Lymphocytic Leukemia (CLL) Who Participated in GS-US-312-0116 (NCT01539512)

NCT01539291

COMPLETED Phase 2

Safety and Efficacy of LDV/SOF Fixed-Dose Combination (FDC) ± Ribavirin in HCV Genotype 1 Subjects

NCT01726517

COMPLETED Phase 2

Sofosbuvir Plus Ribavirin in Treatment-Naive and Treatment-Experienced Egyptian Adults With Chronic Genotype 4 Hepatitis C Virus (HCV) Infection

NCT01713283

TERMINATED Phase 1

A Phase 1 Study to Characterize the Effect of GS-5737 Enhancement of Mucociliary Clearance (MCC) in Healthy Subjects

NCT01793649

COMPLETED Phase 3

Safety and Efficacy of Ledipasvir/Sofosbuvir Fixed-Dose Combination (FDC) With and Without Ribavirin for the Treatment of HCV

NCT01701401

TERMINATED Phase 1

Phase I/II Study of hLL1-DOX in Relapsed NHL and CLL

NCT01585688

COMPLETED Phase 2

Sofosbuvir and Ribavirin in Patients With Chronic HCV With Cirrhosis and Portal Hypertension With or Without Liver Decompensation

NCT01687257

COMPLETED Phase 3

Efficacy and Safety of Sofosbuvir Plus Ribavirin in Chronic Genotype 1, 2 and 3 Hepatitis C Virus (HCV) and Human Immunodeficiency Virus (HIV) Co-infected Adults

NCT01667731

TERMINATED Phase 1

A Phase 1 Study to Assess the Effect of Severe Renal Impairment on the Pharmacokinetics, as Well as Safety/Tolerability, of Ranolazine

NCT01675973

COMPLETED Phase 3

Study Evaluating the Efficacy and Safety of Idelalisib in Combination With Bendamustine and Rituximab for Previously Treated Chronic Lymphocytic Leukemia (CLL) (Tugela )

NCT01569295

COMPLETED Phase 3

Open-Label Study of Sofusbuvir+Ribavirin With or Without Peginterferon Alfa-2a in Subjects With Chronic HCV Infection Who Participated in Prior Gilead HCV Studies

NCT01625338

COMPLETED Phase 3

Sofosbuvir + Ribavirin for 12 or 16 Weeks in Treatment Experienced Subjects With Chronic Genotype 2 or 3 HCV Infection (FUSION)

NCT01604850

COMPLETED Phase 3

Sofosbuvir With Peginterferon Alfa 2a and Ribavirin for 12 Weeks in Treatment-Naive Subjects With Chronic Genotype 1, 4, 5, or 6 HCV Infection

NCT01641640

COMPLETED Phase 3

A Phase 3 Study of Ranolazine in Subjects With Type 2 Diabetes Who Are Inadequately Controlled on Metformin Alone

NCT01555164

COMPLETED

Registry Study for Patients With Chronic HBV Receiving Nucleotide Therapy

NCT01590615

COMPLETED

Gilead Sustained Virologic Response (SVR) Registry

NCT01457755

COMPLETED Phase 1

A Study Evaluating GS-9620 in Treatment Naive Subjects With Chronic Hepatitis B

NCT01590641

COMPLETED Phase 3

A Randomized, Double-Blind, Placebo-Controlled Study of Idelalisib in Combination With Rituximab for Previously Treated Chronic Lymphocytic Leukemia (CLL)

NCT01539512

COMPLETED Phase 1

A Study Evaluating GS-9620 in Virologically Suppressed Subjects With Chronic Hepatitis B Virus Infection

NCT01590654

COMPLETED Phase 2

D/C/F/TAF Versus COBI-boosted DRV Plus FTC/TDF in HIV-1 Infected, Antiretroviral Treatment Naive Adults

NCT01565850

COMPLETED Phase 2

Efficacy of Sofosbuvir With Ribavirin Administered Pre-Transplant in Preventing Hepatitis C Virus (HCV) Recurrence Post-Transplant

NCT01559844

COMPLETED Phase 3

Sofosbuvir + Ribavirin for 12 Weeks in Subjects With Chronic Genotype 2 or 3 Hepatitis C Infection Who Are Interferon Intolerant, Interferon Ineligible or Unwilling to Take Interferon

NCT01542788

COMPLETED Phase 1

A Phase 1b Study Assessing GS-7340 in Treatment-Naive Adults With Chronic Hepatitis B

NCT01671787

COMPLETED Phase 1

A Study Evaluating GS-9620 in Treatment Naive Subjects With Chronic Hepatitis C

NCT01591668

COMPLETED Phase 1

Single Cohort, 2-Period Study to Assess Pharmacokinetics of Metformin Alone and in Combination With Ranolazine 500 mg

NCT01546558

COMPLETED Phase 1

Single Cohort 4-period Study to Assess Pharmacokinetics of Metformin Alone and in Combination With Ranolazine

NCT01546597

COMPLETED Phase 2

Study to Evaluate the Effect of Ranolazine and Dronedarone When Given Alone and in Combination in Patients With Paroxysmal Atrial Fibrillation

NCT01522651

COMPLETED Phase 3

Ranolazine When Added to Glimepiride in Subjects With Type 2 Diabetes Mellitus

NCT01494987

COMPLETED Phase 3

Open-Label Pilot Study to Evaluate Switching From a Regimen Consisting of Raltegravir Plus Emtricitabine/Tenofovir DF Fixed-Dose Combination to the Elvitegravir/Cobicistat/Emtricitabine/Tenofovir DF Single-Tablet Regimen in Virologically Suppressed, HIV-1 Infected Patients

NCT01533259

COMPLETED Phase 2

Safety and Efficacy of E/C/F/TAF (Genvoya®) Versus E/C/F/TDF (Stribild®) in HIV-1 Infected, Antiretroviral Treatment-Naive Adults

NCT01497899

COMPLETED

A Gilead Sequence Registry of Subjects Who Did Not Achieve Sustained Virologic Response

NCT01457768

COMPLETED Phase 3

Phase 3 Study of Sofosbuvir and Ribavirin

NCT01497366

COMPLETED Phase 3

Study to Evaluate Switching From Regimens Consisting of a Nonnucleoside Reverse Transcriptase Inhibitor Plus Emtricitabine and Tenofovir DF to the Elvitegravir/Cobicistat/Emtricitabine/Tenofovir DF Single-Tablet Regimen in Virologically Suppressed, HIV-1 Infected Patients

NCT01495702

COMPLETED Phase 3

Safety of AZLI in Children With Cystic Fibrosis (CF) and Chronic Pseudomonas Aeruginosa in the Lower Airways

NCT01404234

TERMINATED Phase 2

Efficacy and Safety of Simtuzumab (SIM) With FOLFIRI as Second Line Treatment in Colorectal Adenocarcinoma

NCT01479465

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What is open in the Gilead Sciences pipeline

26 recruiting of 504 indexed (5% open); 346 completed (69%).

Phase mix: 164 late (III/IV) vs 317 early (I/II) (early-phase heavy).

Top condition: HIV-1-infection (20 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.

Gilead Sciences: open-pipeline peers nationwide

Peers matched on 504 registered trials and 5% open enrollment, not the therapeutic-area sidebar.

Gilead Sciences 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 0200400600 0%5%10%15%20% Total trials Recruiting share Gilead SciencesH. Lee Moffitt Cancer Center and Research InstituteNational Heart, Lung, and Blood Institute (NHLBI)Boehringer IngelheimNational Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)Creighton UniversityAlmirall, S.A.Cordis USDefense and Veterans Center for Integrative Pain Management
Gilead Sciences 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).

Gilead Sciences 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 504 trials (± recruiting share)

Sponsors near 5% open enrollment (± trial volume)

What to do with this Gilead Sciences page

504 registered trials is a research-attention snapshot, not an endorsement of Gilead Sciences or any single study.

  • 26 of Gilead Sciences's trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • HIV-1-infection is the condition Gilead Sciences studies most, compare against other sponsors active in the same condition before evaluating a specific study. See HIV-1-infection 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.

Gilead Sciences pipeline card: 504 registered trials from official public datasets.Report a data error.