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First human trial launches for Gene-Based MPS i treatment

NCT ID NCT05682144

Disease control Sponsor: Immusoft of CA, Inc. Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jul 17, 2026 · Updated 1 time

Summary

This early-stage study tests whether ISP-001 is safe and tolerable in 11 people with a rare genetic disease called MPS I (Hurler-Scheie or Scheie types). Participants receive the experimental treatment and are monitored for side effects. The goal is to gather safety data for future research.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 1

The first testing in people. Mainly checks safety and dose, usually in a small group.

Participants

About 11 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2023

Expected to finish

Jun 2044

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

10 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Diagnosis of Mucopolysaccharidosis type I Hurler-Scheie or Scheie syndrome. * Age ≥ 10 years at time of study registration. * Creatinine clearance, calculated or measured directly, that is \>60ml/min/1.73m2. * Ejection fraction ≥ 40% by echocardiogram. * Must commit to traveling to the study site for the necessary follow-up evaluations. * Must agree to stay \<45-minute drive from the study site for a minimum of 5 days after cell infusion. Exclusion Criteria: * Known familial inherited cancer syndrome. Suspected cases will be investigated, per the physicians discretion, using relevant genetic tests to determine presence of germline mutations. * History of B cell related cancer, EBV lymphoproliferative disease or autoimmune disorders. * Evidence of active graft-vs-host disease. * Underwent a previous hematopoietic stem cell transplant (HSCT). * Requirement for systemic immune suppression. * Requirement for continuous supplemental oxygen. * Any medical condition likely to interfere with assessment of safety or efficacy of the study treatment. * In the investigator's judgement, the subject is unlikely to complete all protocol-required study visits or procedures, including follow up visits, or comply with the study requirements for participation. Other protocol defined inclusion/exclusion criteria may apply.

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Conditions

The condition(s) this trial relates to.

Hurler-Scheie syndrome Mucopolysaccharidosis I Scheie syndrome

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Mucopolysaccharidosis ih/S Mucopolysaccharidosis is

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    2 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • UCSF Benioff Children's Hospital Oakland

    RECRUITING

    Oakland, California, 94609, United States

  • University of Minnesota

    RECRUITING

    Minneapolis, Minnesota, 55455, United States