Genzyme, a Sanofi Company

Open enrollment with an early-phase pipeline tilt

According to ClinicalTrials.gov-derived indexes, Genzyme, a Sanofi Company sits in the top decile of US sponsors by registered trial count (#154 of 15,742 sponsors by registered trial count).

196 total trials 4 currently recruiting 159 completed early-phase tilt top decile by trial count

Genzyme, a Sanofi Company: 196 sponsored US clinical trials, 4 recruiting.

Genzyme, a Sanofi Company sponsors 196 registered US clinical trials on ClinicalTrials.gov, 4 of them currently recruiting, and 159 completed. 65 of these trials are in Phase 3-4 (later-stage) and 114 in Phase 1-2 (earlier-stage). The most-studied condition in this pipeline is Glycogen Storage Disease Type II (GSD-II), with 5 trials.

Top-decile sponsor footprint

Genzyme, a Sanofi Company ranks in the top decile of sponsors by registered trial count (#154 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 51/100

159 of 188 decided trials (Completed vs. Terminated on ClinicalTrials.gov) reached their planned completion (84.6%), 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

196 total, page 1 of 4

RECRUITING

Pompe Pregnancy Sub-Registry

NCT00567073

RECRUITING

Pompe Disease Registry Protocol

NCT00231400

RECRUITING

Fabry Disease Registry & Pregnancy Sub-registry

NCT00196742

RECRUITING

International Collaborative Gaucher Group (ICGG) Gaucher Disease Registry & Pregnancy Sub-registry

NCT00358943

ACTIVE NOT RECRUITING Phase 3

Fitusiran Prophylaxis in Male Pediatric Subjects Aged 1 to Less Than 12 Years With Hemophilia A or B

NCT03974113

ACTIVE NOT RECRUITING Phase 3

Long-term Safety and Efficacy Study of Fitusiran in Patients With Hemophilia A or B, With or Without Inhibitory Antibodies to Factor VIII or IX

NCT03754790

ACTIVE NOT RECRUITING Phase 2

A Study to Assess Safety and Efficacy of Avalglucosidase Alfa Administered Every Other Week in Pediatric Patients With Infantile-onset Pompe Disease Previously Treated With Alglucosidase Alfa

NCT03019406

ACTIVE NOT RECRUITING Phase 2

Venglustat in Combination With Cerezyme in Adult Patients With Gaucher Disease Type 3 With Venglustat Monotherapy Extension

NCT02843035

TERMINATED Phase 3

A Multinational, Randomized, Double-blind, Placebo-controlled Study to Assess the Efficacy, Pharmacodynamics, Pharmacokinetics, and Safety of Venglustat in Late-onset GM2

NCT04221451

TERMINATED Phase 2

Study of Lademirsen (SAR339375) in Patients With Alport Syndrome

NCT02855268

COMPLETED Phase 4

Collection of Blood Samples From Patients With Relapsing MS Who Developed ITP After Receiving Lemtrada

NCT03784898

COMPLETED Phase 1

Effect of Venglustat in Patients With Renal Impairment

NCT03687554

TERMINATED Phase 2

A Medical Research Study Designed to Determine if Venglustat Can be a Future Treatment for ADPKD Patients

NCT03523728

COMPLETED Phase 1

A Study of the Safety, Tolerability, and Pharmacokinetics of Orally Administered Venglustat and Itraconazole in Healthy Adult Male Participants

NCT06421714

COMPLETED Phase 3

A Study of Fitusiran in Severe Hemophilia A and B Patients Previously Receiving Factor or Bypassing Agent Prophylaxis

NCT03549871

COMPLETED Phase 3

A Study of Fitusiran (ALN-AT3SC) in Severe Hemophilia A and B Patients Without Inhibitors

NCT03417245

COMPLETED Phase 3

A Study of Fitusiran (ALN-AT3SC) in Severe Hemophilia A and B Patients With Inhibitors

NCT03417102

COMPLETED Phase 1

A Study of RG-012 in Subjects With Alport Syndrome

NCT03373786

TERMINATED Phase 2

A Global Study to Assess the Drug Dynamics, Efficacy, and Safety of Venglustat (GZ/SAR402671) in Parkinson's Disease Patients Carrying a Glucocerebrosidase (GBA) Gene Mutation

NCT02906020

COMPLETED Phase 3

Study to Compare the Efficacy and Safety of Enzyme Replacement Therapies Avalglucosidase Alfa and Alglucosidase Alfa Administered Every Other Week in Patients With Late-onset Pompe Disease Who Have Not Been Previously Treated for Pompe Disease

NCT02782741

COMPLETED Phase 2

Efficacy, Safety, Pharmacodynamic, and Pharmacokinetics Study of Olipudase Alfa in Patients With Acid Sphingomyelinase Deficiency

NCT02004691

COMPLETED Phase 1

An Open-label Extension Study of an Investigational Drug, Fitusiran, in Patients With Moderate or Severe Hemophilia A or B

NCT02554773

COMPLETED

LEMTRADA Pregnancy Registry in Multiple Sclerosis

NCT03774914

COMPLETED Phase 1

A Study of the Effects of Hepatic Impairment on the Pharmacokinetics and Tolerability of Eliglustat Tartrate

NCT02536911

COMPLETED Phase 2

Evaluation of the Long-term Safety, Pharmacodynamics, and Exploratory Efficacy of GZ/SAR402671 in Treatment-Naïve Adult Male Patients With Fabry Disease

NCT02489344

COMPLETED Phase 1

Safety, Tolerability, PK, and Efficacy Evaluation of Repeat Ascending Doses of Olipudase Alfa in Pediatric Patients <18 Years of Age With Acid Sphingomyelinase Deficiency

NCT02292654

COMPLETED Phase 1

Taste Evaluation of Different Liquid Formulations With Eliglustat

NCT02422654

COMPLETED

Alglucosidase Alfa Pompe Safety Sub-Registry

NCT01710813

TERMINATED Phase 2

Efficacy and Safety of Vatelizumab in Patients Who Completed Treatment in Study DRI13839

NCT02306811

COMPLETED Phase 4

Phase IIIB-IV Long-Term Follow-up Study for Patients Who Participated in CAMMS03409

NCT02255656

COMPLETED Phase 4

Pharmacokinetics of Alglucosidase Alfa in Patients With Pompe Disease

NCT01410890

COMPLETED Phase 2

Evaluate the Safety, Pharmacodynamics, Pharmacokinetics, and Exploratory Efficacy of GZ/SAR402671 in Treatment-naïve Adult Male Patients With Fabry Disease

NCT02228460

COMPLETED

ATHENA: Natural History of Disease Study in Alport Syndrome Patients

NCT02136862

TERMINATED Phase 2

Efficacy and Safety of Vatelizumab in Patients With Relapsing-Remitting Multiple Sclerosis

NCT02222948

COMPLETED Phase 3

Efficacy, Safety and Pharmacokinetics of Teriflunomide in Pediatric Patients With Relapsing Forms of Multiple Sclerosis

NCT02201108

COMPLETED Phase 2

Avalglucosidase Alfa Extension Study

NCT02032524

COMPLETED Phase 2

A Long-Term Study of Olipudase Alfa in Patients With Acid Sphingomyelinase Deficiency

NCT02004704

COMPLETED Phase 3

Evaluation of Efficacy, Safety of Vandetanib in Patients With Differentiated Thyroid Cancer

NCT01876784

COMPLETED Phase 1

Safety and Efficacy Evaluation of Repeat neoGAA Dosing in Late Onset Pompe Disease Patients.

NCT01898364

TERMINATED Phase 1

A Study of Renal Function in Treatment-naïve, Young Male Patients With Fabry Disease

NCT01839526

COMPLETED Phase 1

Tolerability and Safety Study of Recombinant Human Acid Sphingomyelinase in Acid Sphingomyelinase Deficiency Patients

NCT01722526

COMPLETED Phase 1

A Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics Study of Genz-682452 in Healthy Volunteers

NCT01710826

COMPLETED NA

A Study of the Safety and Effectiveness of Synvisc-One® (Hylan G-F 20) in Patients With Primary Osteoarthritis of the Hip

NCT01618708

COMPLETED Phase 1

Safety, Tolerability and Pharmacokinetics of Genz-682452 in Healthy Men

NCT01674036

COMPLETED Phase 2

A Study of Fresolimumab in Patients With Steroid-Resistant Primary Focal Segmental Glomerulosclerosis (FSGS)

NCT01665391

TERMINATED Phase 4

A Noninferiority Study of Alglucosidase Alfa Manufactured at the 160 L and 4000 L Scales in Treatment Naïve Patients With Infantile-Onset Pompe Disease

NCT01597596

COMPLETED Phase 1

Study to Evaluate the Effect of Eliglustat on the Pharmacokinetics, Safety and Tolerability of Metoprolol in Healthy Adults

NCT01659944

COMPLETED Phase 2

An Efficacy and Safety Study of Sevelamer Carbonate in Hyperphosphatemic Pediatric Participants With Chronic Kidney Disease

NCT01574326

COMPLETED Phase 4

A Study Evaluating Glycosphingolipid Clearance in Patients Treated With Agalsidase Alfa Who Switch to Agalsidase Beta

NCT01650779

COMPLETED

Pompe Lactation Sub-Registry

NCT00566878

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What is open in the Genzyme, a Sanofi Company pipeline

4 recruiting of 196 indexed (2% open); 159 completed (81%).

Phase mix: 65 late (III/IV) vs 114 early (I/II) (early-phase heavy).

Top condition: Glycogen Storage Disease Type II (GSD-II) (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.

Genzyme, a Sanofi Company: open-pipeline peers nationwide

Peers matched on 196 registered trials and 2% open enrollment, not the therapeutic-area sidebar.

Genzyme, a Sanofi Company 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 050100150200250 0%5%10%15%20% Total trials Recruiting share Genzyme, a Sanofi CompanyHospital for Special Surgery, New YorkVertex Pharmaceuticals IncorporatedNational Center for Complementary and Integrative Health (NCCIH)The University of Texas Medical Branch, GalvestonCynosureCarelon ResearchSun Pharmaceutical IndustriesSanofi Pasteur, a Sanofi Company
Genzyme, a Sanofi Company 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).

Genzyme, a Sanofi Company 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 196 trials (± recruiting share)

Sponsors near 2% open enrollment (± trial volume)

What to do with this Genzyme, a Sanofi Company page

196 registered trials is a research-attention snapshot, not an endorsement of Genzyme, a Sanofi Company 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. Genzyme, a Sanofi Company pipeline card: 196 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.