Vertex Pharmaceuticals Incorporated

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, Vertex Pharmaceuticals Incorporated sits in the top decile of US sponsors by registered trial count (#156 of 15,742 sponsors by registered trial count).

191 total trials 20 currently recruiting 144 completed early-phase tilt top decile by trial count

Vertex Pharmaceuticals Incorporated: 191 sponsored US clinical trials, 20 recruiting.

Vertex Pharmaceuticals Incorporated sponsors 191 registered US clinical trials on ClinicalTrials.gov, 20 of them currently recruiting, and 144 completed. 67 of these trials are in Phase 3-4 (later-stage) and 119 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Cystic Fibrosis, with 20 trials.

Top-decile sponsor footprint

Vertex Pharmaceuticals Incorporated ranks in the top decile of sponsors by registered trial count (#156 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

D 63/100

144 of 161 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (89.4%), 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

191 total, page 4 of 4

COMPLETED Phase 1

A Study to Assess the Relative Bioavailability Three New Formulations of Telaprevir in Healthy Subjects

NCT01511432

TERMINATED Phase 4

Telaprevir, Peg-IFN-alfa-2a, and RBV in Treatment-Experienced Black/African American and Non-Black/African American Subjects With Genotype 1 Chronic Hepatitis C

NCT01467492

TERMINATED Phase 3

A Study to Treat Subjects With Telaprevir, Ribavirin, and Peginterferon Who Are Coinfected With HIV and Hepatitis C Virus (HCV)

NCT01467479

TERMINATED Phase 2

A Study to Evaluate the Efficacy and Safety of VX-765 in Subjects With Treatment-Resistant Partial Epilepsy

NCT01501383

TERMINATED Phase 3

Efficacy of a 12-Week Regimen of Telaprevir, Pegylated Interferon, and Ribavirin in Treatment-Naive and Prior Relapser Subjects With Interleukin28B (IL28B) CC Genotype

NCT01459913

COMPLETED Phase 2

Study of the Effect of Ivacaftor on Lung Clearance Index in Subjects With Cystic Fibrosis and the G551D Mutation

NCT01262352

COMPLETED Phase 1

Drug-Drug Interaction Study Between Telaprevir and Buprenorphine

NCT01275599

COMPLETED Phase 1

Drug-Drug Interaction Study of VX-770 and VX-809 in Healthy Subjects

NCT01216046

COMPLETED Phase 2

Study of VX-809 Alone and in Combination With VX-770 in Cystic Fibrosis (CF) Patients Homozygous or Heterozygous for the F508del-CFTR Mutation

NCT01225211

COMPLETED Phase 2

Study of the Effect of VX-770 on Hyperpolarized Helium-3 Magnetic Resonance Imaging in Subjects With Cystic Fibrosis and the G551D Mutation

NCT01161537

TERMINATED Phase 2

A Safety and Efficacy Study of the Combination of VX-222 and Telaprevir in Treatment-Naïve Subjects With Genotype 1 Chronic Hepatitis C Virus Infection

NCT01080222

COMPLETED Phase 3

Rollover Study of VX-770 in Cystic Fibrosis Subjects

NCT01117012

COMPLETED Phase 1

Study of VX-985 in Subjects With Chronic Hepatitis C

NCT01144936

COMPLETED Phase 1

Study of VX-770 on Desipramine

NCT01153542

COMPLETED Phase 2

A 12-week Study of 4 Doses of VX-509 in Subjects With Active Rheumatoid Arthritis

NCT01052194

COMPLETED Phase 1

Study of VX-770 on Midazolam and Rosiglitazone and the Effect of Fluconazole on VX-770

NCT01060566

COMPLETED Phase 1

A Study to Examine the Effects of Telaprevir on the Pharmacokinetics of Cyclosporine and Tacrolimus in Healthy Adults

NCT01038167

COMPLETED Phase 2

Study of VX-765 in Subjects With Treatment-resistant Partial Epilepsy

NCT01048255

COMPLETED Phase 1

Study of VX-770 and Rifampin in Healthy Male Subjects

NCT01018368

COMPLETED Phase 2

Safety and Efficacy of Telaprevir in Combination With Peginterferon Alfa-2a and Ribavirin in Subjects Co-Infected With Hepatitis C Virus (HCV) and HIV

NCT00983853

TERMINATED Phase 2

Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older Homozygous for the F508del-CFTR Mutation

NCT00953706

COMPLETED Phase 3

Study of Ivacaftor in Cystic Fibrosis Subjects Aged 6 to 11 Years With the G551D Mutation

NCT00909727

COMPLETED

Virology Follow up Study in Subjects Previously Treated With Telaprevir

NCT00916474

COMPLETED Phase 3

Study of Ivacaftor in Cystic Fibrosis Subjects Aged 12 Years and Older With the G551D Mutation

NCT00909532

COMPLETED Phase 1

Pharmacokinetics of Multiple Ascending Doses of VCH-222 in Subjects With Chronic Hepatitis C Infection

NCT00911963

COMPLETED Phase 2

Study of VX-809 in Cystic Fibrosis Subjects With the ∆F508-CFTR Gene Mutation

NCT00865904

COMPLETED Phase 3

A Study Evaluating 24-Week and 48-Week Telaprevir-Based Regimen in Treatment Naïve Subjects With Genotype 1 Chronic Hepatitis C Who Achieve an Extended Rapid Viral Response

NCT00758043

COMPLETED Phase 1

Single and Multiple Dose Escalation Study of VX-509 in Healthy Subjects

NCT00789126

COMPLETED Phase 3

A Phase 3 Study of Telaprevir in Combination With Pegasys® and Copegus® in Treatment-Naive Subjects With Genotype 1 Hepatitis C Virus (HCV)

NCT00627926

COMPLETED Phase 1

Safety,Tolerability and Pharmacokinetics of Multiple Ascending Doses of VCH 916 in Subjects With Chronic Hep C Infection

NCT00623649

COMPLETED Phase 2

A Rollover Study for Subjects Participating in the Control Arm of Study VX06-950-106, VX05-950-104 and VX05-950-104EU Whose Plasma Hepatitis C Virus (HCV) Ribonucleic Acid (RNA) Levels Did Not Respond to Therapy

NCT00535847

COMPLETED Phase 1

Study of Telaprevir in Subjects With Hepatic Impairment

NCT00509210

TERMINATED Phase 2

AVN944 in Combination With Gemcitabine for the Treatment of Pancreatic Cancer

NCT00493441

COMPLETED Phase 2

Safety Study of Ivacaftor in Subjects With Cystic Fibrosis

NCT00457821

COMPLETED Phase 2

A Study of Telaprevir (VX-950), Pegasys and Copegus in Hepatitis C (PROVE3)

NCT00420784

COMPLETED Phase 2

Phase 2 Study of VX-950, Pegasys®, and Copegus® in Hepatitis C

NCT00336479

COMPLETED Phase 1

Trial of AVN-944 in Patients With Advanced Hematologic Malignancies

NCT00273936

COMPLETED Phase 2

Phase 2 Study of VX-950, Pegasys and Copegus in Hepatitis C

NCT00262483

COMPLETED Phase 1

A Safety Study for Cethrin (BA-210) in the Treatment of Acute Thoracic and Cervical Spinal Cord Injuries

NCT00500812

COMPLETED Phase 2

Merimepodib (MMPD) in Triple Combination for the Treatment of Chronic Hepatitis C

NCT00088504

TERMINATED Phase 2

VX-710, Doxorubicin, and Vincristine for the Treatment of Patients With Recurrent Small Cell Lung Cancer

NCT00003847

← Previous Page 4 of 4

What is open in the Vertex Pharmaceuticals Incorporated pipeline

20 recruiting of 191 indexed (10% open); 144 completed (75%).

Phase mix: 67 late (III/IV) vs 119 early (I/II) (early-phase heavy).

Top condition: Cystic Fibrosis (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.

Vertex Pharmaceuticals Incorporated: open-pipeline peers nationwide

Peers matched on 191 registered trials and 10% open enrollment, not the therapeutic-area sidebar.

Vertex Pharmaceuticals Incorporated 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 050100150200250 10%12%14%16%18%20% Total trials Recruiting share Vertex Pharmaceuticals IncorporatedVanderbilt-Ingram Cancer CenterHospital for Special Surgery, New YorkNationwide Children's HospitalArizona State UniversityAlexion PharmaceuticalsZimmer BiometUniversity of Mississippi Medical CenterBastyr University
Vertex Pharmaceuticals Incorporated 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).

Vertex Pharmaceuticals Incorporated 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 191 trials (± recruiting share)

Sponsors near 10% open enrollment (± trial volume)

What to do with this Vertex Pharmaceuticals Incorporated page

191 registered trials is a research-attention snapshot, not an endorsement of Vertex Pharmaceuticals Incorporated or any single study.

  • 20 of Vertex Pharmaceuticals Incorporated's trials are currently recruiting, check each one's own eligibility criteria before contacting a site. Browse recruiting trials
  • Cystic Fibrosis is the condition Vertex Pharmaceuticals Incorporated studies most, compare against other sponsors active in the same condition before evaluating a specific study. See Cystic Fibrosis 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.

Vertex Pharmaceuticals Incorporated pipeline card: 191 registered trials from official public datasets.Report a data error.