Rooney, James; Fogh, Isabella; Westeneng, Henk Jan; Vajda, Alice; McLaughlin, Russell; Heverin, Mark; Jones, Ashley; Van Eijk, Ruben; Calvo, Andrea; Mazzini, Letizia; Shaw, Christopher E; Morrison, Karen E; Shaw, Pamela J; Robberecht, Wim; Van Damme, Phillip; Al-Chalabi, Ammar; Van Den Berg, Leonard; Chiò, Adriano; Veldink, Jan; Hardiman, Orla
(BMJ Publishing Group, 2017-04-01)
Introduction: The C9orf72 repeat expansion has been reported as a negative prognostic factor in amyotrophic lateral sclerosis (ALS). We have examined the prognostic impact of the C9orf72 repeat expansion in European subgroups ...