Jazz Pharmaceuticals

Open enrollment across a mixed-phase pipeline

According to ClinicalTrials.gov-derived indexes, Jazz Pharmaceuticals sits in the top decile of US sponsors by registered trial count (#212 of 15,742 sponsors by registered trial count).

128 total trials 15 currently recruiting 81 completed top decile by trial count

Jazz Pharmaceuticals: 128 sponsored US clinical trials, 15 recruiting.

Jazz Pharmaceuticals sponsors 128 registered US clinical trials on ClinicalTrials.gov, 15 of them currently recruiting, and 81 completed. 50 of these trials are in Phase 3-4 (later-stage) and 69 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Narcolepsy, with 5 trials.

Top-decile sponsor footprint

Jazz Pharmaceuticals ranks in the top decile of sponsors by registered trial count (#212 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 27/100

81 of 108 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (75.0%), 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

128 total, page 1 of 3

RECRUITING Phase 1

A Study to Investigate the Safety, Tolerability, Pharmacokinetics, and Food Effect of JZP047 in Healthy Participants

NCT07377539

RECRUITING Phase 2

Study of ONC206 (JZP3507) in Advanced Pheochromocytoma and Paraganglioma

NCT07282587

RECRUITING Phase 1

A Study to Evaluate the Efficacy and Safety of Cannabidiol Oral Solution (CBD-OS [GWP42003-P, JZP926]) for the Treatment of Focal-Onset Seizures

NCT07233239

RECRUITING Phase 2

A Phase 2 Neoadjuvant Study of Zanidatamab in Combination With Chemotherapy in Participants With HER2-positive Breast Cancer

NCT07102381

RECRUITING

Pregnancy Surveillance Program of Patients Exposed to Epidiolex/Epidyolex During Pregnancy

NCT06113237

RECRUITING Phase 1

A Study to Investigate Efficacy, Safety, Tolerability, and Pharmacokinetics of JZP441 Compared With Placebo in Participants With Narcolepsy Type 1

NCT06961266

RECRUITING Phase 2

A Phase 2 Study of Zanidatamab in Patients With HER2-expressing Tumors

NCT06695845

RECRUITING Phase 3

A Study Comparing the Efficacy and Safety of Zanidatamab to Trastuzumab, Each in Combination With Physician's Choice Chemotherapy, for the Treatment of Participants With Metastatic HER2-positive Breast Cancer

NCT06435429

RECRUITING Phase 3

Efficacy and Safety of Zanidatamab With Standard-of-care Therapy Against Standard-of-care Therapy for Advanced HER2-positive Biliary Tract Cancer

NCT06282575

RECRUITING Phase 1

JZP898 Intravenous Infusion as Monotherapy and Combination With Pembrolizumab in Adults With Advanced/Metastatic Solid Tumors

NCT06108050

RECRUITING Phase 1

Study of Lurbinectedin Monotherapy in Pediatric and Young Adult Participants With Relapsed/Refractory Ewing Sarcoma

NCT05734066

RECRUITING Phase 3

ONC201 in H3 K27M-mutant Diffuse Glioma Following Radiotherapy (the ACTION Study)

NCT05580562

RECRUITING Phase 1

A Study of JZP815 Oral Capsules in Adult Participants With Advanced or Metastatic Solid Tumors Harboring Mitogen Activated Protein Kinase (MAPK) Pathway Alterations to Investigate the Safety, Dosing, and Antitumor Activity of JZP815

NCT05557045

RECRUITING Phase 1

Phase I Study of Oral ONC206 in Recurrent and Rare Primary Central Nervous System Neoplasms

NCT04541082

RECRUITING

Child and Adolescent Registry for Participants With Narcolepsy

NCT04899947

ACTIVE NOT RECRUITING Phase 4

A Study to Investigate Behavioral and Other Co-Occurring Outcomes With Epidiolex as Add-On Therapy in Participants Aged 1 to 65 Years of Age With Tuberous Sclerosis Complex

NCT05864846

ACTIVE NOT RECRUITING Phase 4

Assessment of Potential for Chronic Liver Injury in Participants Treated With Epidiolex (Cannabidiol) Oral Solution

NCT05044819

NOT YET RECRUITING Phase 3

A Study Evaluating the Efficacy and Safety of Xywav Expanded Dosing vs Placebo in Participants With Narcolepsy or IH

NCT07625280

NOT YET RECRUITING Phase 2

A Study of Lurbinectedin in Combination With Durvalumab for the Treatment of Participants With ES-SCLC

NCT07459634

NOT YET RECRUITING Phase 2

A Study of JZP3507 (ONC206) in Recurrent Grade 2 or 3 Meningioma

NCT07533942

COMPLETED Phase 4

A Study to Investigate the Effect of XYWAV on Sleepiness, Polysomnography, and Functional Outcomes in Participants With Idiopathic Hypersomnia or Narcolepsy

NCT05875974

COMPLETED Phase 4

A Switch Study From High-Sodium Oxybate to XYWAV to Evaluate Changes in Blood Pressure in Participants With Narcolepsy

NCT05869773

COMPLETED Phase 1

A Multiple Ascending Dose Study to Investigate the Safety, Tolerability, and Pharmacokinetics of JZP441 in Healthy Participants

NCT05720494

TERMINATED Phase 1

A JZP341 Study in Adult Participants With Advanced or Metastatic Solid Tumors

NCT05631327

COMPLETED Phase 2

A Study of Suvecaltamide in Adults With Moderate to Severe Residual Tremor in Parkinson's Disease

NCT05642442

COMPLETED Phase 1

A Study to Investigate The Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of JZP441 in Sleep-deprived Healthy Participants

NCT05651152

TERMINATED Phase 3

Efficacy and Safety of GWP42003-P Oral Solution in Children With Epilepsy With Myoclonic-atonic Seizures

NCT05288283

TERMINATED Phase 2

Lurbinectedin Monotherapy in Participants With Advanced or Metastatic Solid Tumors

NCT05126433

COMPLETED Phase 2

A Study of JZP150 in Adults With Posttraumatic Stress Disorder

NCT05178316

COMPLETED Phase 2

A Study To Assess the Safety and Efficacy of JZP385 in the Treatment of Adults With Moderate to Severe Essential Tremor (ET)

NCT05122650

COMPLETED Phase 1

A Study of Zanidatamab (ZW25) With Evorpacept (ALX148) in Patients With Advanced HER2-expressing Cancer

NCT05027139

TERMINATED Phase 3

Evaluation of the Effect of Nabiximols Oromucosal Spray on Clinical Measures of Spasticity in Participants With Multiple Sclerosis

NCT04984278

COMPLETED

To Assess the Effectiveness and Safety of Zepzelca in Adult Patients With Extensive Stage Small Cell Lung Cancer (SCLC)

NCT04894591

COMPLETED Phase 2

Trial to Investigate the Safety and Efficacy of Cannabidiol Oral Solution (GWP42003-P; CBD-OS) in Children and Adolescents With Autism Spectrum Disorder

NCT04745026

TERMINATED Phase 3

Assessment of Adjunctive Cannabidiol Oral Solution (GWP42003-P) in Children With Tuberous Sclerosis Complex (TSC), Dravet Syndrome (DS), or Lennox-Gastaut Syndrome (LGS) Who Experience Inadequately-controlled Seizures

NCT04485104

TERMINATED Phase 3

Dociparstat in Combination With Standard Chemotherapy for the Treatment of Acute Myeloid Leukemia

NCT04571645

COMPLETED

A Patient-Centric, Prospective, Observational, Non-Interventional Switch Study of XYWAV in Narcolepsy

NCT04803786

COMPLETED Phase 4

An Interventional Safety Switch Study (Segue Study) of XYWAV in Narcolepsy

NCT04794491

COMPLETED Phase 2

A Study of ZW25 (Zanidatamab) in Subjects With Advanced or Metastatic HER2-Amplified Biliary Tract Cancers

NCT04466891

TERMINATED Phase 3

Safety and Effectiveness of Nabiximols Oromucosal Spray as Add-on Therapy in Participants With Spasticity Due to Multiple Sclerosis

NCT04203498

TERMINATED Phase 2

Trial to Investigate the Safety and Efficacy of GWP42003-P Versus Placebo as Adjunctive Therapy in Participants With Schizophrenia Experiencing Inadequate Response to Ongoing Antipsychotic Treatment

NCT04421456

TERMINATED Phase 2

Dociparstat for the Treatment of Severe COVID-19 in Adults at High Risk of Respiratory Failure

NCT04389840

COMPLETED Phase 2

A Study of ZW25 (Zanidatamab) With Palbociclib Plus Fulvestrant in Patients With HER2+/HR+ Advanced Breast Cancer

NCT04224272

TERMINATED Phase 3

A Long-term Safety Study of Cannabidiol Oral Solution (GWP42003-P, CBD-OS) in Patients With Rett Syndrome

NCT04252586

TERMINATED Phase 2

Safety and Tolerability of Cannabidivarin (CBDV) in Children and Young Adults With Autism Spectrum Disorder

NCT03849456

COMPLETED Phase 2

An Open-Label Study of JZP-458 (RC-P) in Patients With Acute Lymphoblastic Leukemia (ALL)/Lymphoblastic Lymphoma (LBL)

NCT04145531

COMPLETED Phase 1

A Phase 1b Master Trial to Investigate CPX-351 in Subjects With Previously Untreated Acute Myeloid Leukemia

NCT04075747

COMPLETED Phase 1

A Trial of CPX-351 Lower Intensity Therapy (LIT) Plus Venetoclax as First Line Treatment for Subjects With AML

NCT04038437

TERMINATED Phase 2

A Safety and Efficacy Study of Defibrotide in the Prevention of Chimeric Antigen Receptor-T-cell-associated Neurotoxicity

NCT03954106

COMPLETED Phase 2

A Safety and Efficacy Study of ZW25 (Zanidatamab) Plus Combination Chemotherapy in HER2-expressing Gastrointestinal Cancers, Including Gastroesophageal Adenocarcinoma, Biliary Tract Cancer, and Colorectal Cancer

NCT03929666

Page 1 of 3 Next →

What is open in the Jazz Pharmaceuticals pipeline

15 recruiting of 128 indexed (12% open); 81 completed (63%).

Phase mix: 50 late (III/IV) vs 69 early (I/II) (balanced across stages).

Top condition: Narcolepsy (5 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.

Jazz Pharmaceuticals: open-pipeline peers nationwide

Peers matched on 128 registered trials and 12% open enrollment, not the therapeutic-area sidebar.

Jazz Pharmaceuticals 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 050100150 10%20%30%40%50% Total trials Recruiting share Jazz PharmaceuticalsUniversity of Illinois at Urbana-ChampaignStony Brook UniversityRhode Island HospitalThe Methodist Hospital Research InstituteCochlearErchonia CorporationHutchmedInternational Maternal Pediatric Adolescent AIDS Clinical Trials Group
Jazz Pharmaceuticals 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).

Jazz Pharmaceuticals 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 128 trials (± recruiting share)

Sponsors near 12% open enrollment (± trial volume)

What to do with this Jazz Pharmaceuticals page

128 registered trials is a research-attention snapshot, not an endorsement of Jazz Pharmaceuticals or any single study.

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

Jazz Pharmaceuticals pipeline card: 128 registered trials from official public datasets.Report a data error.