Registries in Hurler syndrome (MPS I-H)
Registries are secure systems that bring together information from people living with Hurler syndrome over long periods of time. They help build a clearer picture of how the condition progresses, how treatments such as HSCT and ERT perform in everyday care, and where services can improve.
This page explains what registries are, what they usually record, how they are used, and what participation means for families and professionals.
What do we mean by a registry?
A registry is an organised way of collecting medical information from many people who share the same condition. For Hurler syndrome, this means recording diagnosis details, treatments, and how health changes over time in a consistent and structured way.
- Basic background information such as year of birth and region
- How and when the diagnosis was made
- Enzyme activity and genetic test results
- Details of HSCT and ERT
- Follow up findings for heart, lungs, bones, brain, hearing and vision
- Surgeries, hospital admissions and major complications
- Growth, development and quality of life measures
Most analysis is done using coded information, rather than names or direct identifiers.
Different kinds of registries
Many individuals with Hurler syndrome are included in more than one registry, each serving a different purpose.
Hospital or centre-based
Managed by a single specialist team and focused on patients cared for in that service.
National registries
Combine information from multiple centres within one country to support service planning.
International registries
Bring together data from many countries to answer questions that need large numbers.
Treatment or trial-linked
Connected to a specific therapy or study, often with enhanced safety monitoring.
What gets recorded and when
- At diagnosis or first specialist visit
- Before and after HSCT or treatment changes
- Regular follow up during childhood
- Key life transitions such as school or adult care
- Heart scans, breathing tests and imaging results
- Growth and neurodevelopment assessments
- Orthopaedic findings and mobility
- Hearing, vision and daily functioning
- Hospital admissions and infections
How registry participation can help
- Supporting future families by improving understanding of long term outcomes
- Making Hurler syndrome visible to decision makers and health authorities
- Identifying gaps or delays in diagnosis and care
- Helping shape future research and clinical trials
Taking part is always optional, and families can usually change their decision later.
What does joining a registry involve?
- A team member explains the registry and provides written information
- You have time to ask questions before giving consent
- Information from routine care is entered securely
- Some registries include optional questionnaires about daily life
Choosing not to take part does not affect clinical care, and permission can usually be withdrawn for future data collection.
How registries change practice
- Understanding how age at HSCT influences long term outcomes
- Identifying common complications after transplant or during ERT
- Refining follow up schedules and monitoring strategies
- Tracking quality of life across childhood and adulthood
Registry findings also support guideline development and discussions with funding bodies.
Keeping your information safe
- Clear, informed consent in plain language
- Secure storage with restricted access
- Use of coded or pseudonymised data
- Right to ask questions at any stage
If anything is unclear, families should feel comfortable asking for further explanation.
Questions to ask about any registry
- Who manages the registry and where is it based?
- What information will be collected?
- How is identity protected?
- Will results be shared with families?
- Can participation be stopped later?
- Are data fields aligned with core outcome sets?
- How is data quality monitored?
- What are the rules for data access and publication?
Registries, trials and new therapies
- Highlighting ongoing unmet need despite current treatments
- Supporting planning and delivery of future trials
- Monitoring long term safety of advanced therapies
Being part of a registry does not automatically enrol someone in a trial.
Registries at a glance
- They collect long term, structured information
- They support better care, research and advocacy
- Participation is voluntary and confidential
- Families and professionals all contribute to data quality