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Hunter syndrome drug safety tracked in extended trial

NCT ID NCT06031259

Disease control Sponsor: Takeda Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jun 27, 2026

Summary

This study is a follow-up for people with Hunter syndrome and cognitive problems who already took part in earlier studies. It aims to check the long-term safety of the drug idursulfase-IT given with Elaprase. About 6 children and adults will continue their same treatment to monitor for side effects.

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 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

6 people

The number who actually took part.

Started

Mar 2024

Expected to finish

Jan 2029

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

3 to 19 years

Sex

Male participants only

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: 1. The participant must have completed end of study assessments in studies HGT-HIT-046 \[NCT01506141\] or SHP609-302 \[NCT02412787\] and received a clinical benefit from idursulfase-IT in the opinion of the investigator. 2. The participant, or participant's legally designated representative, must have been informed of the nature of this open-label extension and must have voluntarily signed an Institutional Review Board (IRB)/Independent Ethics Committee (IEC) approved informed consent form after all relevant aspects of the study have been explained and discussed. Written consent of the participant's legally designated representative (if applicable) and the participant's consent/assent, as relevant, must be obtained. 3. The participant has continued to receive elaprase on a regular basis in studies HGT-HIT-046 or SHP609-302. Exclusion Criteria: 1. The participant has experienced, in the opinion of the investigator, a safety or medical issue that contraindicates treatment with idursulfase-IT, including, but not limited to, uncontrolled seizure disorder, bleeding disorder, and clinically relevant hypertension. 2. The participant has clinically relevant intracranial hypertension. 3. The participant is enrolled in another clinical study, other than studies HGT-HIT-046 or SHP609-302, that involves clinical investigations or use of any investigational product (drug or \[intrathecal/spinal\] device) within 30 days prior to study enrolment or at any time during the study.

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Conditions

The condition(s) this trial relates to.

mucopolysaccharidosis type 2

As listed by the trial registrant

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

Hunter syndrome

Contacts and locations

Locations

  • Hopital Femme Mere Enfant

    Bron, Auvergne-Rhône-Alpes, 02 69229, France

  • Hospital for Sick Children

    Toronto, Ontario, M5G1X8, Canada

  • M.A.G.I.C. Clinic

    Calgary, Alberta, T2E 7Z4, Canada

  • University of British Columbia

    Vancouver, British Columbia, V6T1Z3, Canada

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