Study to Evaluate the Safety and Efficacy of Adalimumab in MPS I, II, and VI

January 29, 2026 updated by: Lynda E Polgreen, Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center

Phase 1/2 Study of the Effect of Adalimumab on Physical Function and Musculoskeletal Disease in Mucopolysaccharidosis Types I, II, and VI

Randomized, double-blind, placebo-controlled, parallel-group, single-center study followed by open-label phase, to evaluate the effects of adalimumab compared to placebo on the change from baseline in joint and skeletal disease in children and adults with mucopolysaccharidosis (MPS) I, II or VI.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Active, not recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study is a randomized, double-blind, placebo-controlled, parallel-group, single-center study followed by open-label phase, to evaluate the effects of adalimumab compared to placebo on the change from baseline in joint and skeletal disease in children and adults with mucopolysaccharidosis (MPS) I, II or VI. Children and adults diagnosed with MPS I, II or VI, with significant joint restrictions and pain will be randomized to adalimumab treatment or placebo treatment for the first 16 weeks. This will be followed by a 32-week open label adalimumab treatment phase.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
14

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • United States
    • California
      • Torrance, California, United States, 90502
        • The Lundquist Institute at Harbor-UCLA Medical Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

5 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Male or female ≥5 years of age;
  • Diagnosis of MPS I, II or VI;
  • Treatment with ERT for ≥1 year or no treatment with ERT for ≥1 year;
  • Weight ≥15 kg;
  • Significant bodily pain reported by the CHQ-PF50 or SF-36 (> 1 SD more severe [below] than the general population mean);
  • ≥ 3 joints with limitations in motion; and Patient or parent/legal guardian is able and willing to provide informed consent. For patients 7 to 17 years of age, assent must also be provided.

Exclusion Criteria:

  • History of HCT less than 2 years prior to enrollment;
  • Immune suppression therapy less than 1 year prior to enrollment;
  • Active graft versus host disease;
  • Current diagnosis or history of lymphoma or other malignancy;
  • Current active infection;
  • History of serious opportunistic infection (e.g., bacterial [Legionella and Listeria]; tuberculosis [TB]; invasive fungal infections; or viral, parasitic, and other opportunistic infections);
  • Positive TB skin test, positive Quantiferon-TB Gold TB test, positive chest X-ray, or a recent exposure to TB
  • Congestive heart failure defined by an ejection fracture <50% measured by ECHO;
  • Demyelinating disorders (e.g., central nervous system [CNS] disorders including multiple sclerosis and optic neuritis and peripheral nervous system disorders including Guillain-Barre syndrome);
  • Hematologic abnormalities (e.g., pancytopenia, aplastic anemia);
  • Hepatitis B infection (active or chronic carrier);
  • Latex sensitivity;
  • Pregnancy or breastfeeding;
  • Known or suspected allergy to adalimumab or related products;
  • Participation in simultaneous therapeutic study that involves an investigational study drug or agent within 4 weeks of study enrollment;
  • Requirement for live vaccine exposure that would be expected to occur during the time frame of the study; or
  • Any other social or medical condition that the Investigator believes would pose a significant hazard to the subject if the investigational therapy were initiated or be detrimental to the study.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Quadruple

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Adalimumab
20 mg subQ every other week (weight 15to <30 kg) 40 mg subQ every other week (weight ≥30 kg). Non-responders will be escalated to weekly dosing.
Drug: Adalimumab Injection [Humira]
Investigational Drug
Placebo Comparator: Placebo
Saline placebo comparator
Drug: Saline Solution for Injection
Placebo Comparator
Experimental: Open-label adalimumab
Open-label extension of adalimumab dose
Drug: Adalimumab Injection [Humira]
Investigational Drug

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Pain - 16 weeks
Time Frame: 16 weeks
Mean difference in bodily pain measured by the Children's Health Questionnaire - Parent Form 50 (CHQ-PF50) or the Medical Outcomes Study - Short Form 36 (SF-36) in treatment versus placebo at 16 weeks
16 weeks
Adalimumab trough
Time Frame: 32 weeks
Percentage of subjects who achieve a goal trough concentration of adalimumab with every other week dosing
32 weeks

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Joint range-of-motion - 16 weeks
Time Frame: 16 weeks
Percentage of subjects who achieve a 5 degree or more improvement in joint range-ot-motion in treatment versus placebo at 16 weeks.
16 weeks
Pain - 52 weeks
Time Frame: 52 weeks
Mean difference in bodily pain measured by the CHQ-PF50 or the SF-36 at 52 weeks compared to baseline.
52 weeks
Joint range-of-motion - 52 weeks
Time Frame: 52 weeks
Percentage of subjects who achieve a 5 degree or more improvement in joint range-ot-motion at 52 weeks compared to baseline.
52 weeks
Incidence of Treatment-Emergent Adverse Events [Safety and Tolerability
Time Frame: 52 weeks
Percentage of subjects who develop an AE and/or SAE
52 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center

Collaborators

Collaborators

An organization other than the sponsor that provides support for a clinical study. This support may include activities related to funding, design, implementation, data analysis, or reporting.
McGill University Health Centre/Research Institute of the McGill University Health Centre

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Lynda Polgreen, MD, The Lundquist Institute at Harbor-UCLA Medical Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 5, 2017

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
January 1, 2027

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
February 1, 2027

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 11, 2017

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
May 11, 2017

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
May 15, 2017

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
February 2, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
January 29, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
January 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 31041-01

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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