Hereditary spastic paraplegia is a novel phenotype for germline de novo ATP1A1 mutation

Fabrizia Stregapede, Lorena Travaglini, Adriana P Rebelo, Vivian Pedigone Cintra, Emanuele Bellacchio, Luca Bosco, Paolo Alfieri, Stefano Pro, Stephan Zuchner, Enrico Bertini, Francesco Nicita

Research output: Contribution to journalArticle

Abstract

Dominant mutations in ATP1A1, encoding the alpha-1 isoform of the Na+ /K+ -ATPase, have been recently reported to cause an axonal to intermediate type of Charcot-Marie-Tooth disease (ie, CMT2DD) and a syndrome with hypomagnesemia, intractable seizures and severe intellectual disability. Here, we describe the first case of hereditary spastic paraplegia (HSP) caused by a novel de novo (p.L337P) variant in ATP1A1. We provide evidence for the causative role of this variant with functional and homology modeling studies. This finding expands the phenotypic spectrum of the ATP1A1-related disorders, adds a piece to the larger genetic puzzle of HSP, and increases knowledge on the molecular mechanisms underlying inherited axonopathies (ie, CMT and HSP).

Original languageEnglish
Pages (from-to)521-526
Number of pages6
JournalClinical Genetics
Volume97
Issue number3
DOIs
Publication statusE-pub ahead of print - 2019

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