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Abstract

Background:

Spinal muscular atrophy (SMA) is a neurodegenerative disease in which there has been an increase in survivalover the past decade due to proactive, multidisciplinary management and the emergence of disease-modifying therapies.Despite this, there are still several critical challenges that significantly impact the quality of life of individuals with SMAindividuals. Given the need to better understand the reality of this disease, Fundación de Atrofia Muscular Espinal (FundAME)created a patient registry (RegistrAME).

Methods:

RegistrAME is a longitudinal prospective study that collectsclinical data and patient-reported outcomes.

Results:

The registry included 336 individuals, 51.8% of whom were over16 years old. Most adult subpopulations were classed as type 2 (49.4%) or type 3 (44.8%). Regarding functional status,19% walked (39.4% used wheelchairs), 46.6% sat without support (84% needed help to sit), and 34.5% were non-sitters.Furthermore, 24.7% reported having no useful function in their hands or not being able to reach their mouths with theirhands. Our study indicates that the adult SMA population is progressively accessing disease-modifier treatments. However,21.8% of the population is still untreated.

Conclusions:

These results provide evidence of a progressive impairment andincreased sensitivity to treatment discontinuations in the SMA adult population, along with delayed or reduced access tocommercialised SMA drugs and clinical trials. A more rigorous evaluation of the disease’s impact and treatment benefitsin the adult SMA population is necessary.

References

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