Abstract
To highlight the current diagnostic pathway for children with Spinal Muscular Atrophy (SMA) in Ireland. We look to identify points along the diagnostic pathway that may impede a timely diagnosis, and argue that newborn screening for SMA is the single best measure to remediate these delays. Through retrospective chart review and an online questionnaire, we gathered SMA patient data outlining clinical characteristics and the route to diagnosis of the SMA cohort attending the National SMA Treatment centre at Children's Health Ireland. We found that 32 children were diagnosed with SMA in Ireland in the 15-years from 2007 to 2021, with twelve cases of SMA type I. Muscle weakness is the most commonly reported initial sign, and the GP is usually the first health provider to address parental concerns. Patients commonly experience delays in diagnosis due to factors such as varied SMA clinical phenotypes, and a lack of experience or awareness of SMA amongst community based health care practitioners. In spite of this, when patients do gain early access to tertiary diagnostics through prenatal or neonatal genetic testing, they then report rapid diagnosis and initiation of disease modifying therapy in the crucial pre-symptomatic window. We conclude that delays to diagnosis inherent within the current Irish system are pervasive and arise prior to engagement with tertiary services. All of these delays are remediable through the establishment of a dedicated SMA newborn screening programme.
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