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Showing 1–24 of 191 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Mucopolysaccharidoses Clear all
Completed No phase listed Observational Results available

Screening Study to Identify Pediatric Patients With Hunter Syndrome Who Demonstrate Evidence of Central Nervous System (CNS) Involvement and Who Are Currently Receiving Treatment With Elaprase®

NCT00937794
View directory record Official record
Conditions
Hunter Syndrome
Interventions
Neurobehavioral testing, Visual and auditory assessments
Behavioral · Other
Lead sponsor
Shire
Industry
Eligibility
32 Months to 18 Years · Male only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 13, 2021 · Synced Sep 4, 2026, 11:33 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Study of DNL126 in Pediatric Participants With Mucopolysaccharidosis Type IIIA (Sanfilippo Syndrome Type A)

NCT06181136
View directory record Official record
Conditions
Mucopolysaccharidosis Type IIIA
Interventions
DNL126
Drug
Lead sponsor
Denali Therapeutics Inc.
Industry
Eligibility
0 Years to 18 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
4
States / cities
Oakland, California • Iowa City, Iowa • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Recruiting Phase 2 Interventional

Interventional Study of Infigratinib in Children < 3 Years Old With Achondroplasia (ACH)

NCT07169279
View directory record Official record
Conditions
Achondroplasia
Interventions
Infigratinib is provided as a single dose of minitablets for oral administration, Infigratinib is provided as sprinkle capsules for daily oral administration, Infigratinib or placebo comparator is provided as sprinkle capsules for daily oral administration
Drug
Lead sponsor
QED Therapeutics, a BridgeBio company
Industry
Eligibility
0 Years to 32 Months
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
3
States / cities
Oakland, California • Baltimore, Maryland • Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Withdrawn Phase 1 Interventional

Safety and Efficacy of HMI-203 in ERT-Treated Adults With MPS II

NCT05238324
View directory record Official record
Conditions
Mucopolysaccharidosis II
Interventions
Genetic HMI-203
Biological
Lead sponsor
Homology Medicines, Inc
Industry
Eligibility
18 Years to 45 Years · Male only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
5
States / cities
Oakland, California • New Haven, Connecticut • Hackensack, New Jersey + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2023 · Synced Sep 4, 2026, 11:33 PM EDT
Available No phase listed Expanded access

Post-trial Access Program of Idursulfase-IT Along With Elaprase in Children With Hunter Syndrome

NCT05795361
View directory record Official record
Conditions
Hunter Syndrome
Interventions
Idursulfase-IT
Drug
Lead sponsor
Takeda
Industry
Eligibility
Male only
Healthy volunteers
Healthy volunteers not accepted
U.S. locations
17
States / cities
Phoenix, Arizona • Oakland, California • Wilmington, Delaware + 14 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Completed No phase listed Observational

Genetic Analysis of the Chiari I Malformation

NCT00004738
View directory record Official record
Conditions
Syringomyelia, Type I Arnold Chiari Malformation
Interventions
Not listed
Lead sponsor
National Institute of Neurological Disorders and Stroke (NINDS)
NIH
Eligibility
1 Year and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Recruiting Phase 2Phase 3 Interventional

Study of Cannabidiol in Sanfilippo Syndrome

NCT06333041
View directory record Official record
Conditions
Sanfilippo Syndrome, Mucopolysaccharidosis III
Interventions
Epidiolex, Placebo
Drug
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
4 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Recruiting No phase listed Observational

Prospective Clinical Assessment Study in Children With Hypochondroplasia

NCT06410976
View directory record Official record
Conditions
Hypochondroplasia
Interventions
Not listed
Lead sponsor
QED Therapeutics, a BridgeBio company
Industry
Eligibility
30 Months to 16 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
8
States / cities
Oakland, California • Aurora, Colorado • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 15, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Completed No phase listed Observational

A Study of Mucopolysaccharidosis Type IIIB (MPS IIIB)

NCT02493998
View directory record Official record
Conditions
Mucopolysaccharidosis Type IIIB, Mucopolysaccharidosis Type 3 B, MPS III B, MPS 3 B
Interventions
Not listed
Lead sponsor
Allievex Corporation
Industry
Eligibility
1 Year to 10 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Mar 5, 2020 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 2 Interventional Results available

HSCT for High Risk Inherited Inborn Errors

NCT00383448
View directory record Official record
Conditions
Adrenoleukodystrophy, Metachromatic Leukodystrophy, Globoid Cell Leukodystrophy, Tay Sachs Disease, Sandhoffs Disease, Wolman Disease, I-Cell Disease, Sanfilippo Syndrome, GM1 Gangliosidosis
Interventions
Clofarabine, Total body Irradiation, Melphalan, Hematopoietic Stem Cell Transplantation, Alemtuzumab, mycophenylate mofetil, Cyclosporine A, Hydroxyurea
Drug · Procedure · Biological + 1 more
Lead sponsor
Masonic Cancer Center, University of Minnesota
Other
Eligibility
Up to 70 Years
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2014
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 10, 2019 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 2 Interventional Results available

Randomized, Controlled, Open-label, Multicenter, Safety and Efficacy Study of rhHNS Administration Via an IDDD in Pediatric Patients With Early Stage MPS IIIA Disease

NCT02060526
View directory record Official record
Conditions
Sanfilippo Syndrome
Interventions
Recombinant human heparan N-sulfatase [rhHNS]
Drug
Lead sponsor
Shire
Industry
Eligibility
12 Months to 48 Months
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
3
States / cities
Torrance, California • Minneapolis, Minnesota • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 7, 2021 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 4 Interventional

A Study Investigating the Relationship Between the Development of Laronidase Antibody and Urinary GAG (Glycosaminoglycan) Levels in Aldurazyme® Treated Patients

NCT00144768
View directory record Official record
Conditions
Mucopolysaccharidosis I, Hurler's Syndrome, Hurler-Scheie Syndrome, Scheie's Syndrome
Interventions
laronidase
Drug
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
Not listed
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
3
States / cities
Los Angles, California • Hartford, Connecticut • Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated May 4, 2014 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 1 Interventional

Unrelated Umbilical Cord Blood Transplantation Augmented With ALDHbr Umbilical Cord Blood Cells

NCT00692926
View directory record Official record
Conditions
MDS, Anemia, Aplastic, Inborn Errors of Metabolism, Congenital Marrow Failure, Congenital Immunodeficiency Syndrome
Interventions
ALDHbr Umbilical Cord Blood Cells
Biological
Lead sponsor
Joanne Kurtzberg, MD
Other
Eligibility
Up to 55 Years
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 28, 2017 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 2 Interventional Results available

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
View directory record Official record
Conditions
Sly Syndrome, MPS VII, Mucopolysaccharidosis, Mucopolysaccharidosis VII
Interventions
UX003
Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
1 Day to 5 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
3
States / cities
Washington D.C., District of Columbia • New York, New York • Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Oct 29, 2019 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 3 Interventional Results available

Clinical Study of Aldurazyme in Patients With Mucopolysaccharidosis (MPS) I

NCT00912925
View directory record Official record
Conditions
Mucopolysaccharidosis I, Hurlers Syndrome, Hurler-Scheie Syndrome
Interventions
rhIDU (recombinant human-Alpha-L-Iduronidase), Placebo
Biological
Lead sponsor
Genzyme, a Sanofi Company
Industry
Eligibility
5 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2001
U.S. locations
2
States / cities
New York, New York • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 6, 2015 · Synced Sep 4, 2026, 11:33 PM EDT
Enrolling by invitation No phase listed Observational

Long Term Follow-Up for RGX-111

NCT06103487
View directory record Official record
Conditions
Mucopolysaccharidosis I
Interventions
No Intervention
Genetic
Lead sponsor
REGENXBIO Inc.
Industry
Eligibility
Not listed
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Apr 28, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Terminated No phase listed Observational

A Follow-up Study in Patients With Inherited Metabolic Disorders (IMD) Who Underwent Hematopoietic Stem Cell Transplantation (HSCT) With MGTA-456

NCT04008849
View directory record Official record
Conditions
Inherited Metabolic Disorders (IMD)
Interventions
Safety and efficacy assessments
Other
Lead sponsor
Magenta Therapeutics, Inc.
Industry
Eligibility
Up to 16 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 14, 2021 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Effects of Adalimumab in Mucopolysaccharidosis Types I, II and VI

NCT02437253
View directory record Official record
Conditions
Mucopolysaccharidosis Type I, Mucopolysaccharidosis Type II, Mucopolysaccharidosis Type VI
Interventions
Adalimumab, Placebo
Drug · Other
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
5 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Torrance, California
Source: ClinicalTrials.gov public record
Updated Sep 14, 2017 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Phase 1Phase 2 Interventional

A Treatment Study of Mucopolysaccharidosis Type IIIB

NCT02754076
View directory record Official record
Conditions
MPS III B, Mucopolysaccharidosis Type IIIB
Interventions
AX 250
Drug
Lead sponsor
Allievex Corporation
Industry
Eligibility
1 Year to 10 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Aug 5, 2020 · Synced Sep 4, 2026, 11:33 PM EDT
Completed No phase listed Observational Results available

Collection and Study of Cerebrospinal Fluid in Patients With Hunter Syndrome

NCT01449240
View directory record Official record
Conditions
Hunter Syndrome
Interventions
No treatment
Other
Lead sponsor
Shire
Industry
Eligibility
Up to 70 Years · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
5
States / cities
Decatur, Georgia • Chicago, Illinois • Minneapolis, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jun 8, 2021 · Synced Sep 4, 2026, 11:33 PM EDT
Active, not recruiting Phase 3 Interventional

RGX-121-3102 Gene Therapy in Participants With MPS II (Hunter Syndrome)

NCT07236606
View directory record Official record
Conditions
MPS II, Hunter Syndrome (MPS II)
Interventions
RGX-121-3102
Genetic
Lead sponsor
REGENXBIO Inc.
Industry
Eligibility
4 Months to 5 Years · Male only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Recruiting Phase 2Phase 3 Interventional

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

NCT02716246
View directory record Official record
Conditions
MPS IIIA, Sanfilippo Syndrome, Sanfilippo A, Mucopolysaccharidosis III
Interventions
UX111, Prophylactic Immunomodulatory (IM) Therapy, Optimized Prophylactic IM Therapy, Adjuvant IM Therapy
Biological · Drug
Lead sponsor
Ultragenyx Pharmaceutical Inc
Industry
Eligibility
Not listed
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2029
U.S. locations
2
States / cities
Columbus, Ohio • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effectiveness of a Butyrate Formulation and Butyrate + Polyphenol Formulation on Gut Health, Permeability and Associated Symptoms

NCT06419231
View directory record Official record
Conditions
Gut Health
Interventions
Butyrate Formulation, Butyrate + Polyphenol Formulation, Placebo
Dietary Supplement
Lead sponsor
Supplement Formulators, Inc.
Industry
Eligibility
21 Years to 70 Years
Enrollment
143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Jan 12, 2026 · Synced Sep 4, 2026, 11:33 PM EDT
Suspended Phase 1Phase 2 Interventional

RGX-111 Gene Therapy in Patients With MPS I

NCT03580083
View directory record Official record
Conditions
Mucopolysaccharidosis Type I (MPS I), Hurler Syndrome, Hurler-Scheie Syndrome
Interventions
RGX-111
Genetic
Lead sponsor
REGENXBIO Inc.
Industry
Eligibility
4 Months and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2029
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 4, 2026, 11:33 PM EDT