Ultragenyx Pharmaceutical

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, Ultragenyx Pharmaceutical sits in the top decile of US sponsors by registered trial count (#363 of 15,742 sponsors by registered trial count).

52 total trials 4 currently recruiting 25 completed early-phase tilt top decile by trial count

Ultragenyx Pharmaceutical: 52 sponsored US clinical trials, 4 recruiting.

Ultragenyx Pharmaceutical sponsors 52 registered US clinical trials on ClinicalTrials.gov, 4 of them currently recruiting, and 25 completed. 9 of these trials are in Phase 3-4 (later-stage) and 24 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Long-chain Fatty Acid Oxidation Disorders (LC-FAOD), with 3 trials.

Top-decile sponsor footprint

Ultragenyx Pharmaceutical ranks in the top decile of sponsors by registered trial count (#363 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 3/100

25 of 38 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (65.8%), 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

52 total, page 1 of 2

RECRUITING Phase 2

A Safety and Efficacy Study of GTX-102 in Subjects With Deletion- or Nondeletion-type Angelman Syndrome (AS)

NCT07157254

RECRUITING

Glycogen Storage Disease Type Ia (GSDIa) Disease Monitoring Program

NCT06636383

RECRUITING

Mucopolysaccharidosis VII Disease Monitoring Program

NCT03604835

RECRUITING Phase 2

Phase I/II/III Gene Transfer Clinical Trial of scAAV9.U1a.hSGSH

NCT02716246

ACTIVE NOT RECRUITING Phase 3

Phase 3 Efficacy and Safety Study of GTX-102 in Pediatric Subjects With Angelman Syndrome (AS)

NCT06617429

ACTIVE NOT RECRUITING Phase 3

Setrusumab vs Bisphosphonates in Pediatric Subjects With Osteogenesis Imperfecta

NCT05768854

ACTIVE NOT RECRUITING Phase 3

Clinical Study of DTX301 AAV-Mediated Gene Transfer for Ornithine Transcarbamylase (OTC) Deficiency

NCT05345171

ACTIVE NOT RECRUITING Phase 2

Setrusumab vs Placebo for Osteogenesis Imperfecta

NCT05125809

ACTIVE NOT RECRUITING

Tumor-induced Osteomalacia Disease Monitoring Program

NCT04783428

ACTIVE NOT RECRUITING

Long-Chain Fatty Acid Oxidation Disorders In-Clinic Disease Monitoring Program

NCT04632953

ACTIVE NOT RECRUITING Phase 1

A Phase 1/2/3 Study of UX701 Gene Therapy in Adults With Wilson Disease

NCT04884815

ACTIVE NOT RECRUITING

Long Term Follow Up to Evaluate DTX301 in Adults With Late-Onset OTC Deficiency

NCT03636438

ACTIVE NOT RECRUITING

X-linked Hypophosphatemia Disease Monitoring Program

NCT03651505

NOT YET RECRUITING Phase 1

First-in-human Study of UX016 in GNEM

NCT07511556

TERMINATED

Long-Chain Fatty Acid Oxidation Disorders Online Disease Monitoring Program

NCT04812106

TERMINATED

Clinical Survey Study to Assess Physical Function and the Incidence of Hypoglycemia in Participants With Glycogen Storage Disease Type III

NCT05196165

TERMINATED Phase 2

Long-term Extension Study of Setrusumab in Adults With Type I, III, or IV Osteogenesis Imperfecta

NCT05312697

COMPLETED Phase 3

A Study of Adeno-Associated Virus Serotype 8-Mediated Gene Transfer of Glucose-6-Phosphatase in Patients With Glycogen Storage Disease Type Ia (GSDIa)

NCT05139316

TERMINATED Phase 1

Safety, Tolerability, and Pharmacokinetics of UX053 in Patients With Glycogen Storage Disease Type III (GSD III)

NCT04990388

TERMINATED

Adeno-Associated Virus (AAV) Antibody Study in Subjects OTC Deficiency, GSDIa, and Wilson Disease

NCT04909346

COMPLETED

Clinical Evaluation and Assessment of Instruments and Biomarkers in Subjects With Wilson Disease

NCT04531189

COMPLETED

Study to Evaluate Biomarkers and Clinical Manifestations in Individuals With Glycogen Storage Disease Type III (GSD III)

NCT04574830

COMPLETED

Retrospective Study of Glucose Monitoring for Glycemic Control in Patients With GSDIa

NCT04708015

TERMINATED

Study to Characterize Rate of Ureagenesis in Patients With Ornithine Transcarbamylase (OTC) Deficiency

NCT04717453

COMPLETED Phase 1

A Study of the Safety and Tolerability of GTX-102 in Children With Angelman Syndrome

NCT04259281

TERMINATED Phase 1

Gene Transfer Study of ABO-102 in Patients With Middle and Advanced Phases of MPS IIIA Disease

NCT04088734

COMPLETED

A Study to Assess Plasma Ammonia Time-Normalized Area Under the Curve and Rate of Ureagenesis in Healthy Adult Subjects

NCT04269122

COMPLETED

Study of Long-Term Safety and Efficacy on Gene Therapy in Glycogen Storage Disease Type Ia

NCT03970278

COMPLETED

Clinical Outcome of Triheptanoin Treatment in Patients With Long-chain Fatty Acid Oxidation Disorders (LC-FAOD) Treated Under Expanded Access Program

NCT03768817

COMPLETED Phase 1

Safety and Dose-Finding Study of DTX401 (AAV8G6PC) in Adults With Glycogen Storage Disease Type Ia (GSDIa)

NCT03517085

COMPLETED Phase 2

A Study in Adult Patients With Type I, III or IV Osteogenesis Imperfecta Treated With BPS804

NCT03118570

COMPLETED Phase 1

Safety and Dose-Finding Study of DTX301 (scAAV8OTC) in Adults With Late-Onset Ornithine Transcarbamylase (OTC) Deficiency

NCT02991144

TERMINATED Phase 3

Crossover Study to Assess the Efficacy and Safety of UX007 in the Treatment of Movement Disorders Associated With Glucose Transporter Type 1 Deficiency Syndrome (Glut1 DS)

NCT02960217

COMPLETED

Long-Term Safety, Tolerability, and Efficacy of DTX101 (AAVrh10FIX) in Adults With Moderate/Severe to Severe Hemophilia B

NCT02971969

TERMINATED

Observational Study of Males With Creatine Transporter Deficiency

NCT02931682

TERMINATED Phase 3

Study to Evaluate the Safety and Efficacy of Aceneuramic Acid Extended-Release (Ace-ER) Tablets in Patients With Glucosamine (UDP-N-acetyl)-2-epimerase Myopathy (GNEM) or Hereditary Inclusion Body Myopathy (HIBM)

NCT02736188

TERMINATED Phase 2

A Study to Evaluate the Safety of Aceneuramic Acid Extended Release (Ace-ER; UX001) Tablets in Glucosamine (UDP-N-acetyl)-2-Epimerase (GNE) Myopathy (GNEM) (Also Known as Hereditary Inclusion Body Myopathy [HIBM]) Patients With Severe Ambulatory Impairment

NCT02731690

TERMINATED Phase 1

Safety and Dose Finding Study of DTX101 (AAVrh10FIX) in Adults With Moderate/Severe to Severe Hemophilia B

NCT02618915

COMPLETED Phase 3

A Study of UX003 Recombinant Human Beta-Glucuronidase (rhGUS) Enzyme Replacement Therapy in Subjects With Mucopolysaccharidosis Type 7, Sly Syndrome (MPS 7)

NCT02432144

TERMINATED Phase 2

Study to Assess the Long Term Safety and Efficacy of UX007 in Participants With Glucose Type 1 Deficiency Syndrome (Glut1 DS)

NCT02599961

COMPLETED Phase 2

Study of UX003 Recombinant Human Beta-Glucuronidase (rhGUS) Enzyme Replacement Treatment in Mucopolysaccharidosis Type 7, Sly Syndrome (MPS 7) Patients Less Than 5 Years of Age

NCT02418455

COMPLETED Phase 3

Phase 3 Randomized, Double-Blind, Placebo-Controlled Study to Evaluate Sialic Acid in Patients With Glucosamine (UDP-N-acetyl)-2-epimerase Myopathy (GNEM) or Hereditary Inclusion Body Myopathy (HIBM)

NCT02377921

COMPLETED Phase 2

Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD) Extension Study for Subjects Previously Enrolled in Triheptanoin Studies

NCT02214160

COMPLETED Phase 3

A Phase 3 Study of UX003 Recombinant Human Betaglucuronidase (rhGUS) Enzyme Replacement Therapy in Patients With Mucopolysaccharidosis Type 7 (MPS 7)

NCT02230566

COMPLETED Phase 2

Phase 2 Study of Triheptanoin (UX007) for the Treatment of Glucose Transporter Type 1 Deficiency Syndrome (Glut1 DS)

NCT01993186

COMPLETED Phase 2

A Study of UX007 (Triheptanoin) in Participants With Long-Chain Fatty Acid Oxidation Disorders (LC-FAOD)

NCT01886378

COMPLETED Phase 2

An Open Label Phase 2 Extension Study of Higher Dose Sialic Acid-Extended Release (SA-ER) Tablets and Sialic Acid-Immediate Release (SA-IR) Capsules in Patients With Glucosamine (UDP-N-acetyl)-2-Epimerase (GNE) Myopathy

NCT01830972

COMPLETED

GNE-Myopathy Disease Monitoring Program (GNEM-DMP): A Registry and Prospective Observational Natural History Study to Assess GNE Myopathy or Hereditary Inclusion Body Myopathy (HIBM)

NCT01784679

COMPLETED Phase 2

A Phase 2 Study to Evaluate the Dose and Pharmacodynamic Efficacy of Sialic Acid-Extended Release (SA-ER) Tablets in Patients With GNE Myopathy or Hereditary Inclusion Body Myopathy

NCT01517880

COMPLETED Phase 1

Safety and Pharmacokinetics of Sialic Acid Tables in Patients With Hereditary Inclusion Body Myopathy (HIBM)

NCT01359319

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What is open in the Ultragenyx Pharmaceutical pipeline

4 recruiting of 52 indexed (8% open); 25 completed (48%).

Phase mix: 9 late (III/IV) vs 24 early (I/II) (early-phase heavy).

Top condition: Long-chain Fatty Acid Oxidation Disorders (LC-FAOD) (3 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.

Ultragenyx Pharmaceutical: open-pipeline peers nationwide

Peers matched on 52 registered trials and 8% open enrollment, not the therapeutic-area sidebar.

Ultragenyx Pharmaceutical 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 102030405060 0%5%10%15% Total trials Recruiting share Ultragenyx PharmaceuticalAlbany Medical CollegeBurzynski Research InstituteDr. Reddy's Laboratories LimitedPTC TherapeuticsAlumisAndrei IagaruBioXcel TherapeuticsCorporal Michael J. Crescenz VA Medical Center
Ultragenyx Pharmaceutical 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).

Ultragenyx Pharmaceutical 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 52 trials (± recruiting share)

Sponsors near 8% open enrollment (± trial volume)

What to do with this Ultragenyx Pharmaceutical page

52 registered trials is a research-attention snapshot, not an endorsement of Ultragenyx Pharmaceutical 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.

Ultragenyx Pharmaceutical pipeline card: 52 registered trials from official public datasets.Report a data error.