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. 2022 Jun 16;16:1865–1883. doi: 10.2147/DDDT.S214174

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© 2022 Hjartarson et al.

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Schematic illustration of SMA types, maximal milestones achieved within each type, as well as the most typical SMN2 copy numbers for respective type.104

Notes: Adapted from Schorling DC, Pechmann A, Kirschner J. Advances in treatment of spinal muscular atrophy - new phenotypes, new challenges, new implications for care. J Neuromuscul Dis. 2020;7(1):1–13. © 2020 – IOS Press and the authors. All rights reservedThis article is published online with Open Access and distributed under the terms of the Creative Commons Attribution Non-Commercial License (CC BY-NC 4.0).