Peripheral neuropathy in ALS: phenotype association

Introduction

Amyotrophic lateral sclerosis (ALS) is a rare and progressive neurodegenerative disease mainly affecting upper and lower motor neurons but also causing multisystem involvement, in particular, associated with cognitive changes. Minor sensory fibre dysfunction has been described in the past1 and confirmed in recent studies.2 In a multicentre study investigating a population of 88 patients with ALS, the ESTEEM group (a European Telematic Project for quality assurance within Clinical Neurophysiology) reported sensory polyneuropathy (PNP) in 12.5% of the patients, not influenced by age, disease duration and onset region.

In this study, we aimed to readdress prevalence of and risk factors for PNP in a larger population of patients with ALS. A large number of variables, including gene mutations, were assessed.

Methods

We prospectively followed up patients with ALS in Lisbon (January 2015–January 2018) consecutively enrolled into the OnWebDuals register3 to test the influence of clinical features…

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