What this study looked at
Mucopolysaccharidosis type I (MPS I) is a rare inherited disorder in which earlier treatment leads to better outcomes, so spotting it sooner is important. An international group of 11 experts in paediatrics, rare diseases and inherited metabolic diseases set out to build a simple algorithm that would prompt clinicians to suspect MPS I earlier. They chose key signs based on how common and how specific they were, agreed on the algorithm together, and then tested it against real patient cases.
Key takeaways
- In children under two, curvature of the spine (kyphosis or gibbous deformity) was the key sign that should raise suspicion of MPS I.
- In children over two, the same spinal signs plus joint stiffness or contractures without inflammation were the prompts to look further.
- When tested on 35 real cases, the algorithm would have led to earlier referral in 32 of them (91%).
Why it matters
A straightforward, easy-to-use algorithm can help clinicians recognise MPS I sooner, leading to a quicker diagnosis and the chance to start treatment earlier.
