ClinicalTrials.gg
CompletedNCT03920540Updated Apr 16, 2024

A Study of GC1111 in Hunter Syndrom Patients

A Phase 3 interventional study of GC1111 and Comparator in Hunter Syndrome, sponsored by Green Cross Corporation. Completed at 1 site in Korea, Republic of. Open to male participants aged 5 Years and older. Per ClinicalTrials.gov, last updated 2024-04-16.

Sponsored by Green Cross Corporation · Phase 3, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 1 month after the study started (first participant enrolled Mar 2017, registered Apr 2019).
Phase
Phase 3
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
5 Years and older
Sex
Male
01

Study summary

The objective of this study is to evaluate the efficacy of GC1111 in Hunter Syndrome Patients

02

Conditions studied

  • Hunter Syndrome

Keywords

  • GC1111
  • Mucopolysaccharidosis II
  • MPS II
  • idursulfase-beta
  • IDS
03

In context

Mucopolysaccharidosis II

77 studies on the registry are indexed under Mucopolysaccharidosis II; 8 are open to participants now.

This study's enrollment of 32 is above the median of 22 across 48 interventional studies indexed under Mucopolysaccharidosis II.

Browse Mucopolysaccharidosis II studies →

Lead sponsor

Green Cross Corporation is the lead sponsor of 63 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
5 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients diagnosed with Hunter syndrome
  • Male at the age of ≥ 5
  • Adequate abilities (including 6-MWT) to participate in this study in the opinion of the investigator.
  • Voluntarily signed written to participation in this study
  • Consent to

Exclusion criteria

Exclusion Criteria:

  • Prior treatment with iduronate-2-sulfatase ERT
  • History of bronchotomy, bone marrow trasplanation, or cord blood transplanation.
  • Known reactions to any of the components of the invetigational product
  • Prior or planned administration of other products within 30 days before treatment with the investigational product in this study or duirng this study.
  • Unable to perform 6-MWT.
  • Female
Terms in these criteria, in plain language(4)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hypersensitivity

An allergy, or another reaction of the immune system, to a substance. “Hypersensitivity to the study drug” means a known allergic reaction to it — not every side effect a medicine can have.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
32 participants (actual)

Study arms

  • Experimental
    GC1111

    In part 1, all participants who randomized into GC1111 arm should receive the GC1111 for 52 weeks. In part 2, all enrolled participants should receive the GC1111 for 52 weeks.

    Combination Product: GC1111

  • Active comparator
    Comparator (Part 1)

    In Part 1, all participants who randomized into comparator arm should receive the GC1111 for 52 weeks.

    Combination Product: Comparator

Interventions

  • Combination productGC1111

    GC1111 is 0.5mg per kg of body weight once weekly to be administered slowly by intravenous infusion.

  • Combination productComparator

    Comparator is 0.5mg per kg of body weight once weekly to be administered slowly by intravenous infusion.

06

What researchers measure

Primary outcomes

  1. Change in 6-MWT

    Time frame: at Week 53 from baseline

07

Study locations

1 site
  • Samsug Medical Center
    Seoul, Korea, Republic of
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 16, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03920540
Responsible party
Sponsor
First posted
Apr 19, 2019
Start date
Mar 9, 2017
Primary completion
Feb 15, 2022
Completion
Feb 15, 2022
Last update
Apr 16, 2024

Study contacts

DongKyu Jin, M.D., Ph.D.
principal investigator · Samsung Medical Center

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Apr 2024. You cannot join it, but the record below documents what was studied.

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Studies of the drug tested here: Idursulfase

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