Affiliations: [a] Neurorehabilitation Unit, Department of Clinical Neurosciences, San Raffaele Scientific Institute and Università Vita-Salute San Raffaele, Milan, Italy | [b] Neurology Unit, Department of Pathophysiology and Transplantation, ‘Dino Ferrari’ Center, University of Milan, Fondazione Ca' Granda, IRCCS Ospedale Maggiore Policlinico, Milan, Italy
Correspondence:
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Correspondence to: Dr. Chiara Cerami, Università Vita-Salute San Raffaele and San Raffaele Scientific Institute, Department of Clinical Neurosciences, Neurorehabilitation Unit, Via Olgettina 60 - 20132 Milano, Italy. Tel.: +39 02 2643 5760; Fax: +39 02 2643 5738; E-mail: cerami.chiara@hsr.it.
Abstract: Progranulin (GRN) mutations are typically associated with the behavioral variant of frontotemporal dementia and the non-fluent variant of primary progressive aphasia phenotypes. Hereby, we describe a patient affected by semantic variant of primary progressive aphasia (svPPA) with a highly positive family history of dementia, carrying a novel GRN missense variation in exon 11 [g.2897 C > T (p.Thr409Met)], predicted in silico to be damaging to protein structure and function. The variant was absent in 175 frontotemporal lobar degeneration (FTLD) patients and in 38 healthy subjects. This case confirms that GRN represents one of the most frequent FTLD genetic causes, suggesting that a screening is indicated in the case of svPPA presentation.
