Journal of Neurodegenerative Diseases / 2013 / Article / Tab 1

Clinical Study

Clinical and Genetic Study of Algerian Patients with Spinal Muscular Atrophy

Table 1

Classification of autosomal recessive proximal spinal atrophy as defined by Zerres et al. [26].

TypeDefinition

INever able to sit
IIAble to sit but not to walk
Able to walk
III(a) Onset before 3 years
(b) Onset 3–30 years
IVOnset after 30 years