ClinicalTrials.gg
TerminatedNCT02095015Updated Mar 17, 2021

Mucopolysaccharidosis (MPS) I, II, and VI Screening in a High-Risk Population With Previous Surgical Repair or Presence of Inguinal and/or Umbilical Hernia in Combination With Pediatric ENT Surgery (The HATT Project)

An observational study in Mucopolysaccharidosis (MPS), sponsored by Shire. Terminated at 14 sites in 7 countries. Open to male participants aged Up to 7 Years. Per ClinicalTrials.gov, last updated 2021-03-17.

Sponsored by Shire (part of Takeda) · Observational

Why this study was terminated
terminated for not meeting enrollment goals
Study type
Observational
Model
Other
Time perspective
Prospective
Enrollment
159
Ages
Up to 7 Years
Sex
Male
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 37 studies in Mucopolysaccharidoses with a site in United States — 7 open to participants now, 9 under way, 1 of them phase 3. Mucopolysaccharidoses · United States.

Enrollment
7th of 18
159 · median 78
Started
2014
with 4 others
Observational
18 of 37
4 open now
Registered
17th of 37
by date
Lead sponsor
4 of 37
Shire

Among the 37 studies in Mucopolysaccharidoses with a site in United States, this one is the 7th largest by enrollment of the 18 observational ones that give a count, is one of 5 that started in 2014, is one of 18 observational ones, and was the 17th registered.

Mucopolysaccharidoses

59 studies on the registry are indexed under Mucopolysaccharidoses; 11 are open to participants now.

This study's enrollment of 159 is above the median of 50 across 30 observational studies indexed under Mucopolysaccharidoses.

Browse Mucopolysaccharidoses studies →

Open to participants now

7 of the 37 studies in Mucopolysaccharidoses with a site in United States are open now.

All 7 open studies →

A study can be open while its sites in United States have not opened yet or have stopped. Only those recruiting at a site in United States →

Who these studies take

Of the 6 Mucopolysaccharidoses studies recruiting now, 2 (33%) set no upper age limit and 3 (50%) stop at 75 or younger; 5 take children under 18; 2 take healthy volunteers.

This study: Up to 7 Years · male · no healthy volunteers.

The full table on the hub →
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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 37 studies in Mucopolysaccharidoses with a site in United States, or all of them as a file.
02

Study summary

Mucopolysaccharidosis (MPS) type II (MPS II; Hunter syndrome) is a rare, X-linked disease caused by a deficiency of the lysosomal enzyme iduronate-2-sulfatase (I2S) and occurs almost exclusively in boys, with an incidence of approximately 1.3 per 100,000 live male births.1 Early identification of MPS II is challenging because some initial features, such as chronic runny nose, otitis media, and hernias, are commonly seen in the general population. As a result, even though the signs and symptoms of MPS II typically appear early in childhood, the diagnosis may lag behind by several years.

The primary objective of this international multi-center study is to evaluate the positive screening rate of MPS II subjects by screening a high-risk male pediatric population who have had or are scheduled for 1 or more specific ENT surgical procedures (adenoidectomy and/or tonsillectomy and/or tympanostomy) and who have a previously repaired or present evidence of an inguinal and/or umbilical hernia.

Read the detailed description

With evidence-based information from MPS registries regarding the types of surgical interventions that are most prevalent in MPS, this screening study is expected to provide the understanding of the role pediatric ENT surgeons can play in identifying young children with MPS.

03

Conditions studied

  • Mucopolysaccharidosis (MPS)

Keywords

  • MPS II
  • iduronate-2-sulfatase
  • Mucopolysaccharidosis VI
  • MPS
  • MPS VI
  • ear, nose and throat
  • Mucopolysaccharidosis II
  • Hunter syndrome
  • ENT
  • Mucopolysaccharidosis I
  • Hurler, Hurler-Scheie, or Scheie syndrome
  • Mucopolysaccharidosis
  • MPS I
  • Maroteaux-Lamy syndrome
04

Who can participate

Ages eligible
Up to 7 Years
Sexes eligible
Male
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Males of any ethnic background or race, \<7 years of age or under, who have had or are scheduled for adenoidectomy and/or tonsillectomy and/or tympanostomy (alone or in combination), will be enrolled. In addition, the subjects must have previous surgical repair or presence of inguinal and/or umbilical hernia.

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

Each subject must meet the following criteria to be enrolled in this study:

  1. The subject is male.
  2. The subject is \<7 years of age.
  3. The subject has had or is scheduled for ENT surgery for any of the following, alone or in combination: adenoidectomy, tonsillectomy, and tympanostomy.
  4. The subject has record of previous surgical repair or presence of inguinal and/or umbilical hernia.
  5. The subject's parent(s) or the subject's legally authorized representative(s) has provided written that has been approved by the Institutional Review Board/Independent Ethics Committee (IRB/IEC).

Exclusion criteria

Exclusion Criteria:

Subjects who meet any of the following criteria will be excluded from the study:

  1. The subject has a current confirmed diagnosis of any MPS disorder.
  2. The subject was born prematurely (defined as born before 37 weeks gestation).
  3. The subject has received a blood transfusion within the past 6 weeks.
  4. The subject has received a bone marrow transplant.
Terms in these criteria, in plain language(1)

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.

05

Study design

Observational model
Other
Time perspective
Prospective
Enrollment
159 participants (actual)
Patient registry
No

Groups and cohorts

  • Analysis population

    All subjects enrolled in the study who meet the eligibility criteria

06

What researchers measure

Primary outcomes

  1. The status of diagnosis of MPS II (either positive or negative) of each subject

    To evaluate the positive screening rate of MPS II subjects by screening a high risk male pediatric population.

    Time frame: Screening visit

Secondary outcomes

  1. The status of diagnosis of MPS I or VI (either positive or negative) of each subject

    Time frame: Screening visit

07

Study locations

14 sites
  • Children's Hospital Los Angeles
    Los Angeles, California 90027, United States
  • Nemours Children's Clinic
    Jacksonville, Florida 32207, United States
  • Children's Hospital and Clinic
    Minneapolis, Minnesota 55404, United States
  • Saint Louis Children's Hospital
    Saint Louis, Missouri 63110, United States
  • Children's Hospital of Philadelphia
    Philadelphia, Pennsylvania 19104, United States
  • Children's Hospital of Pittsburgh of UPMC
    Pittsburgh, Pennsylvania 15224, United States
  • Intermountain Ear Nose and Throat Center
    Salt Lake City, Utah 84102, United States
  • Montreal Children's Hospital
    Montreal, Quebec H3H 1P3, Canada
  • Ospedale San Gerardo
    Monza, 20900, Italy
  • Ospedale Pediatrico Bambino Gesù
    Passoscuro, 00050, Italy
  • Christus Muguerza del Parque, S.A. de C.V.
    Chihuahua, 31000, Mexico
  • Hospital de Cruces
    San Vicente de Baracaldo, 48903, Spain
  • Hacettepe Universitesi Tip Fakultesi Hastanesi
    Ankara, 06100, Turkey
  • Royal Manchester Children's Hospital
    Manchester, M13 9WL, United Kingdom
08

References and documents

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Ran from May 2014 to primary completion in Aug 2015, 14 months.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 20, 2014
First posted
Mar 24, 2014
StartActual
May 21, 2014
Primary completionActual
Aug 14, 2015
CompletionActual
Aug 14, 2015
Last update
Mar 17, 2021
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Mar 17, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT02095015
Lead sponsor
Shire
Responsible party
Sponsor
First posted
Mar 24, 2014
Start date
May 21, 2014
Primary completion
Aug 14, 2015
Completion
Aug 14, 2015
Last update
Mar 17, 2021

Study contacts

Study Director
study director · Takeda

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is terminated, as verified in Mar 2021. You cannot join it, but the record below documents what was studied.

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