Actively Recruiting

Phase 2
Phase 3
MALE
NCT05208281

A Multi-cohort Study of Safety, Efficacy, PK and PD of GNR-055 in Patients With Mucopolysaccharidosis Type II

Led by AO GENERIUM · Updated on 2025-07-30

32

Participants Needed

5

Research Sites

326 weeks

Total Duration

On this page

AI-Summary

What this Trial Is About

This is phase 2/3 study to evaluate the safety, pharmacokinetics, pharmacodynamics, and efficacy of the investigational product GNR-055 in MPS II (Hunter syndrome) patients of different age groups.

CONDITIONS

Official Title

A Multi-cohort Study of Safety, Efficacy, PK and PD of GNR-055 in Patients With Mucopolysaccharidosis Type II

Who Can Participate

MALE

Eligibility Criteria

Eligible

You may qualify if you...

  • Signed informed consent
  • Verified diagnosis of Mucopolysaccharidosis Type II (Hunter syndrome)
  • Patients who are treatment-naïve or have received standard enzyme replacement therapy with idursulfase products
  • No contraindications for lumbar puncture as judged by the investigator
  • Willingness and ability to follow study procedures
Not Eligible

You will not qualify if you...

  • Clinically significant hypersensitivity to iduronate-2-sulfatase or any component of the drug product
  • History of hematopoietic stem cell transplantation or bone marrow transplantation
  • Presence of implanted or external non-removable metal devices, cardiac pacemaker, or other magnetic field-sensitive objects that pose safety risks or interfere with MRI
  • Other diseases or conditions that could put patient safety at risk or affect safety data analysis as judged by the investigator

AI-Screening

AI-Powered Screening

Complete this quick 3-step screening to check your eligibility

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Trial Site Locations

Total: 5 locations

1

Federal State-Funded Healthcare Institution Central Clinical Hospital of the Russian Academy of Sciences (Research Institute of Pediatrics and Child Health Protection of the Central Clinical Hospital of the Russian Academy of Sciences)

Moscow, Russia, 119333

Not Yet Recruiting

2

Federal State Budgetary Educational Institution of Higher Education "St. Petersburg State Pediatric Medical University" of the Ministry of Health of the Russian Federation

Saint Petersburg, Russia, 194100

Not Yet Recruiting

3

V.I. Vernadsky Crimean Federal University

Simferopol, Russia, 295007

Actively Recruiting

4

State Budgetary Healthcare Institution Republican Medical Genetic Center

Ufa, Russia, 450076

Actively Recruiting

5

State Autonomous Healthcare Institution of the Sverdlovsk Region Regional Children's Clinical Hospital

Yekaterinburg, Russia, 620149

Actively Recruiting

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Research Team

S

Svetlana B. Korotkova, MD, PhD

CONTACT

O

Oksana A. Markova, MD, MSc

CONTACT

How is the study designed?

Study Type

INTERVENTIONAL

Masking

NONE

Allocation

NON_RANDOMIZED

Model

SEQUENTIAL

Primary Purpose

TREATMENT

Number of Arms

3

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