• Eduardo F Tizzano.
• Department of Clinical and Molecular Genetics, Hospital Valle Hebron, Barcelona, Spain; Medicine Genetics Group, Valle Hebron Research Institute (VHIR), Barcelona, Spain. Electronic address: etizzano@vhebron.net.
• Early Hum. Dev. 2019 Nov 1; 138: 104851.

AbstractSevere spinal muscular atrophy is an autosomal recessive motor neuron disorder characterized by rapidly progressive hypotonia and weakness with respiratory complications and fatal outcome. It is caused by absence or pathogenic variants in the SMN1 gene. Knowledge and advances of the genetics of the disease allowed the development of tailored therapies that has changed clinical trajectories with evolving phenotypes. Several clinical investigations demonstrate that early diagnosis and intervention are essential for improved response to treatment and better prognosis. Therapeutic interventions that are effective at pre-symptomatic or early stages of the disease creates the need for awareness, expedite diagnosis and consideration of newborn screening programs.Copyright © 2019 Elsevier B.V. All rights reserved.

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