ISP-001: Sleeping Beauty Transposon-Engineered B Cells for MPS I

NCT ID: NCT05682144

Last Updated: 2025-04-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE1

Total Enrollment

2 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-04-12

Study Completion Date

2039-06-01

Brief Summary

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A first-in-human study using ISP-001 in adult patients with Mucopolysaccharidosis Type I Hurler-Scheie and Scheie.

Detailed Description

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This is a Phase 1, first-in-human, open-label, single-arm study in which adult patients with Mucopolysaccharidosis Type I Hurler-Scheie and Scheie are treated with autologous plasmablasts engineered to express α-L-iduronidase (IDUA) using the Sleeping Beauty transposon system (ISP-001). This study will evaluate the safety and tolerability of ISP-001.

Conditions

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Mucopolysaccharidosis IH/S Mucopolysaccharidosis IS

Study Design

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Allocation Method

NA

Intervention Model

SINGLE_GROUP

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Autologous Plasmablasts (B cells)

Dose Level: 5 x 10e7 cells/kg on Day 0

Group Type EXPERIMENTAL

Autologous Plasmablasts (B cells)

Intervention Type BIOLOGICAL

Autologous plasmablasts (B cells) engineered to express α-L-iduronidase (IDUA) using the Sleeping Beauty (SB) transposon system.

Interventions

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Autologous Plasmablasts (B cells)

Autologous plasmablasts (B cells) engineered to express α-L-iduronidase (IDUA) using the Sleeping Beauty (SB) transposon system.

Intervention Type BIOLOGICAL

Eligibility Criteria

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Inclusion Criteria

* Diagnosis of Mucopolysaccharidosis type I Hurler-Scheie or Scheie syndrome.
* Age ≥ 18 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.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Immusoft of CA, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Immusoft Clinical Development

Role: STUDY_DIRECTOR

Immusoft of CA, Inc.

Locations

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UCSF Benioff Children's Hospital Oakland

Oakland, California, United States

Site Status RECRUITING

University of Minnesota

Minneapolis, Minnesota, United States

Site Status RECRUITING

Countries

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United States

Central Contacts

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Jake Wesley, PharmD, MS

Role: CONTACT

Facility Contacts

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Matt Thura

Role: primary

Other Identifiers

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MT2021-24

Identifier Type: -

Identifier Source: org_study_id

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