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Easy-to-use algorithm would provide faster diagnoses for mucopolysaccharidosis type I and enable patients to receive earlier treatment

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  • Anna Tylki-Szymańska
  • Linda De Meirleir
  • Maja Di Rocco
  • Waseem M Fathalla
  • Nathalie Guffon
  • Christina Lampe
  • Allan M Lund
  • Rossella Parini
  • Frits A Wijburg
  • Jiri Zeman
  • Maurizio Scarpa
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AIM: The aim of this study was to develop an algorithm to prompt early clinical suspicion of mucopolysaccharidosis type I (MPS I).

METHODS: An international working group was established in 2016 that comprised 11 experts in paediatrics, rare diseases and inherited metabolic diseases. They reviewed real-world clinical cases, selected key signs or symptoms based on their prevalence and specificity and reached consensus about the algorithm. The algorithm was retrospectively tested.

RESULTS: An algorithm was developed. In patients under two years of age, kyphosis or gibbus deformity were the key symptoms that raised clinical suspicion of MPS I and in those over two years they were kyphosis or gibbus deformity, or joint stiffness or contractures without inflammation. The algorithm was tested on 35 cases, comprising 16 Hurler, 10 Hurler-Scheie, and nine Scheie patients. Of these 35 cases, 32 (91%) - 16 Hurler, nine Hurler-Scheie and seven Scheie patients - would have been referred earlier if the algorithm had been used.

CONCLUSION: The expert panel developed and tested an algorithm that helps raise clinical suspicion of MPS I and would lead to a more prompt final diagnosis and allow earlier treatment.

Original languageEnglish
JournalActa paediatrica
Volume107
Issue number8
Pages (from-to)1402-1408
Number of pages7
ISSN1651-2227
DOIs
Publication statusPublished - Aug 2018

ID: 56310116