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Hunter SyndromePhase 4NCT05058391

A Study of Elaprase in Children and Adults With Hunter Syndrome (Mucopolysaccharidosis II) in India

A Phase 4 study testing Elaprase in people with Hunter Syndrome, run by Takeda at 5 sites in India.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The main aim of this study is to learn more about the safety profile of Elaprase in Indian children and adults with hunter syndrome. Participants will receive Elaprase once per week over a 3-hour period which can be reduced to 1 hour as determined by the study doctor. Read more about this study

Who is it for?
Any age
Conditions the study is for
Hunter Syndrome
What is being tested?
Elaprase
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
5 participants
Where
5 sitesIndia
Study dates
21 Apr 2022to 18 Apr 2024
Phase
Phase 4
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages Any age
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Male or female Elaprase naive participants (and who are not part of any other program at the time of study enrollment and during the study period) of any age with confirmed diagnosis of Hunter syndrome based on the following documented biochemical and genetic criteria:
  • Documented deficiency in iduronate 2-sulfatase (IDS [12S]) enzyme activity of less than or equal to 10 percent (%) of the lower limit of the normal range as measured in plasma, fibroblasts, or leukocytes (based on normal range of measuring laboratory).
  • A normal enzyme activity level of one other sulfatase as measured in plasma, fibroblasts, or leukocytes (based on normal range of measuring laboratory).
  • The participant has a documented mutation in the IDS gene.
  • In the opinion of the investigator, the participant or the participant's parents/guardians are capable of understanding and complying with protocol requirements.
  • The participant or, when applicable, the participant's parents/guardians/legal authorized representative (LAR) signs and dates a written, informed consent form and any required privacy authorization prior to the initiation of any study procedures. If the participant participating in this study is greater than or equal to (>=) 7 years and less than (<) 18 years of age signs and dates an assent form.
  • A male participant who is nonsterilized and sexually active with a female partner of childbearing potential agrees to use barrier method of contraception (example, condom with or without spermicide) from signing of informed consent throughout the duration of the study. The female partner of a male participant should also be advised to use a highly effective/effective method of contraception.
  • A female participant of childbearing potential who is sexually active with a nonsterilized male partner agrees to use a highly effective method of contraception from signing of informed consent throughout the duration of the study.

Who cannot join

  • Participant has received hematopoietic stem cell transplant (HSCT) or a bone marrow transplant at any time.
  • Participant is unable to comply with the protocol, example, uncooperative with protocol schedule, refusal to agree to all of the study procedures, inability to return for safety evaluations, or is otherwise unlikely to complete the study, as determined by the investigator.
  • Participant is suffering from any comorbid conditions (including hepatic impairment, acute or chronic) or having any other clinical observation or history during the screening examination, which would interfere with the objectives of the study as per investigators judgement.
  • The participant has a chronic kidney disease with estimated Glomerular Filtration rate less than 15 milliliter per minute per 1.73 meter square (mL/min/1.73 m^2) and/or is on dialysis.
  • The participant is an immediate family member, study site employee, or is in a dependent relationship with a study site employee who is involved in conduct of this study (example, spouse, parent, child, sibling) or may consent under duress.
  • The participant has a history of hypersensitivity or allergies to related compounds including any associated excipients.
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  • If female, the participant is pregnant or lactating or intending to become pregnant before participating in this study, during the study; or intending to donate ova during such time period.
  • If male, the participant intends to donate sperm during the course of this study.
  • The participant has participated in another clinical study or received any investigational compound or non-investigational idursulfase beta within the past 30 days before informed consent.

Trial locations and contacts

5 sites in 1 country.

5 sites in 1 country

India5 sites
  • JK Lone Hospital

    Jaipur, Rajasthan, 302004

  • Institute of Child Health

    Kolkata, 700017

  • All India Institute of Medical Sciences (AIIMS)

    New Delhi, 110 029

  • Sir Gangaram Hospital

    New Delhi, 110060

  • SAT Hospital - Govt Medical College

    Thiruvananthapuram, Kerala, 69501

Other trials in India

About this study

Official title: A Prospective, Multicenter, Single-arm, Open-label, Interventional Phase IV Study to Evaluate the Safety and Efficacy of Idursulfase (r-DNA Origin) (Elaprase™) in Indian Pediatric and Adult Population With Hunter Syndrome (Mucopolysaccharidosis II)

The main aim of this study is to learn more about the safety profile of Elaprase in Indian children and adults with hunter syndrome.

Participants will receive Elaprase once per week over a 3-hour period which can be reduced to 1 hour as determined by the study doctor. Participants will need to visit the clinic weekly during the duration of the study.

Conditions
Hunter Syndrome
Being tested
Elaprase
Keywords
Mucopolysaccharidosis II
Medical subject headings
Mucopolysaccharidosis II

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • ElapraseBiological

    Also called Idursulfase

    Elaprase IV infusion.

Study groups in NCT05058391
Study groupRoleWhat they receive
Elaprase 0.5 mg/kgExperimentalParticipants received a single dose of elaprase 0.5 milligrams per kilogram (mg/kg) IV infusion every week from Week 1 (Day 1) up to end of treatment (EOT) at Week 52.
Receives: Biological: Elaprase

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Participants With Treatment Emergent Adverse Events (TEAEs), Serious TEAEs, Discontinuation Due to TEAEs and Death

    An adverse event (AE) was defined as any untoward medical occurrence in a clinical investigation participant administered a drug; it does not necessarily have to have a causal relationship with this treatment. An AE can therefore be any unfavorable and unintended sign (example, a clinically significant abnormal laboratory value), symptom, or disease temporally associated with the use of a drug whether or not it is considered related to the drug. A serious TEAE was defined as any untoward medical occurrence that at any dose results in: death; is life-threatening: requires inpatient hospitalization or results in prolongation of existing hospitalization; persistent or significant disability/incapacity; leads to a congenital anomaly/birth defect or is an important medical event. Number of participants with TEAEs, serious TEAEs, discontinuation due to TEAEs, and death are reported.

    Measured: From start of the study drug administration up to Week 53

  2. Number of Participants With Adverse Drug Reactions (ADRs)

    An ADR was defined as a response to a drug which was noxious and unintended, and which occurred at doses normally used in humans for prophylaxis, diagnosis, or therapy of disease, or for the modification of physiological function.

    Measured: From start of the study drug administration up to Week 53

  3. Number of Participants With Infusion-related Reactions (IRRs)

    An IRR was defined as an AE that had been assessed as at least possibly related to treatment with elaprase and occurred during an infusion or up to 24 hours post-infusion.

    Measured: From start of the study drug administration up to Week 53

Secondary outcomes (12)
  1. Change From Baseline in Percentage Forced Vital Capacity (%FVC) at Weeks 27 and 53

    FVC is the amount of air that can be forcibly exhaled from your lungs after taking the deepest breath possible, as measured by spirometry. FVC is a measure of respiratory function.

    Measured: Baseline, Weeks 27 and 53

  2. Change From Baseline in 6 Minute Walk Test (6MWT) at Weeks 27 and 53

    6MWT is the distance covered over a time of 6 minutes and is a measure of physical functional capacity which is determined on a walking course.

    Measured: Baseline, Weeks 27 and 53

  3. Change From Baseline in Cardiac Left Ventricular Mass Index (LVMI) at Weeks 27 and 53

    Cardiac LVMI was measured by 2-dimensional (2D) echocardiography. Cardiac LVMI is the left ventricular mass (LVM) in grams indexed to body surface area (BSA), in square meters (m^2). Cardiac LVMI (in grams per square meter [g/m^2])=LVM divided by BSA.

    Measured: Baseline, Weeks 27 and 53

  4. Change From Baseline in Left Ventricular Ejection Fraction (LVEF) at Weeks 27 and 53

    The LVEF was measured by 2D echocardiography and considered a sufficiently sensitive measure to evaluate any changes in cardiac function.

    Measured: Baseline, Weeks 27 and 53

  5. Change From Baseline in Liver Volume at Weeks 27 and 53

    Liver volume was determined by Ultrasonography (USG).

    Measured: Baseline, Weeks 27 and 53

  6. Change From Baseline in Spleen Volume at Weeks 27 and 53

    Spleen volume was determined by USG.

    Measured: Baseline, Weeks 27 and 53

  7. Change From Baseline in Normalized Urine Glycosaminoglycan (uGAG) Levels at Week 14, 27, 40, and 53

    Normalized uGAG was analyzed using urine testing. The uGAG levels were normalized to urine creatinine and were reported as microgram glycosaminoglycan (GAG) per milligram creatinine (μg GAG/mg creatinine).

    Measured: Baseline, Weeks 14, 27, 40, and 53

  8. Change From Baseline in Global Joint Range of Motion (JROM) Score at Weeks 27 and 53

    Passive joint mobility is defined as the range of motion of the shoulder, elbow, wrist, hip, knee, and ankle joints, as assessed by one expert physician using universal goniometry method. Global JROM (% of normal range of motion) is the average of 11 ratios multiplied by 100. Ratios are left/right means of passive range of motion in shoulder (flexion/extension, abduction, internal/external rotation), elbow (flexion/extension), wrist (flexion/extension), index finger (flexion/extension [combined metacarpophalangeal joint, proximal interphalangeal joint, distal interphalangeal joint motion]), hip (flexion/extension, abduction, internal/external rotation), knee (flexion/extension), and ankle (dorsiflexion) divided by the normal range (American Academy of Orthopedic Surgeons and American Medical Association).

    Measured: Baseline, Weeks 27 and 53

  9. Change From Baseline in Anthropometric Parameter: Height at Weeks 27 and 53

    Change from baseline in height (centimeters [cm]) was assessed in participants less than (<)18 years of age.

    Measured: Baseline, Weeks 27 and 53

  10. Change From Baseline in Anthropometric Parameter: Weight at Weeks 27 and 53

    Change from baseline in weight (kilograms[kg]) was assessed in all participants.

    Measured: Baseline, Weeks 27 and 53

  11. Health-related Quality of Life (HRQoL) Based on Change From Baseline in the Hunter Syndrome-Functional Outcomes for Clinical Understanding Scale (HS-FOCUS) Domain Scores

    HS-FOCUS is developed as disease-specific measure of the impact of Hunter syndrome on HRQL. The HS-FOCUS is designed to gather information on the participant's daily life and wellbeing, satisfaction with treatment, and hospitalizations, as well as on how Hunter syndrome impacts participant's general quality of life. HS-FOCUS includes 2 validated components: a parent version and a participant self-reported version for those over age 12 years. The HS-FOCUS (shortened version) questionnaire has 5 function domains (walking/standing, grip/reach, school/work, activities, and breathing). Items are scored using a response scale from 0 to 3, with 0 signifying an ability to complete the activity-related functions 'without any difficulty' and 3 denoting highest disability. Higher scores on each domain indicate greater disability.

    Measured: Baseline, Weeks 27 and 53

  12. Change From Baseline in the HRQoL Based on Childhood Health Assessment Questionnaire (CHAQ) Domain Scores

    The CHAQ was initially developed for assessing juvenile idiopathic arthritis, from the perspective of the parent or participant, and has been previously applied to other chronic disabling conditions such as Hunter syndrome. It is a 30-item instrument that measures functional capacity and independence in activities of daily life across eight domains: dressing and grooming, arising, eating, walking, reach, grip, hygiene, and activities. For each domain, there is a 4-level difficulty scale that is scored from 0 to 3, with 0 corresponding to 'without any difficulty' and 3 to 'unable to do'. Higher scores on each domain indicate greater disability.

    Measured: Baseline, Weeks 27 and 53

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted27 Sep 2021
  2. Study start21 Apr 2022
  3. Primary completion6 Apr 2024
  4. Study completion18 Apr 2024

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
5 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT05058391
Sponsor's protocol ID
TAK-665-4001
Other IDs
2022-004193-39
Status last verified
Dec 2024
First submitted
24 Sep 2021
Last updated
23 Jan 2025
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
No: De-identified individual participant data from this particular study will not be shared as there is a reasonable likelihood that individual participants could be re-identified (due to the limited number of study participants)

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing Elaprase in people with Hunter Syndrome, run by Takeda at 5 sites in India.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 8 inclusion and 9 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 23 Jan 2025. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 5 sites in India. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Jan 2025). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Participants With Treatment Emergent Adverse Events (TEAEs), Serious TEAEs, Discontinuation Due to TEAEs and Death (time frame: From start of the study drug administration up to Week 53). The study lists 3 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 23 Jan 2025.

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