Findings that shed new light on the possible pathogenesis of a disease or an adverse effect
G2019S LRRK2 mutation causing Parkinsons disease without Lewy bodies
1 Hospital Clínic i Universitari de Barcelona, Movement disorders Unit. Neurology Service, Villarroel 170, Barcelona, 08036, Spain
2 Universitat de Barcelona, Branc de Teixits Neurologics, Villarroel 170, Barcelona, 08036, Spain
Correspondence to:
mjmarti{at}clinic.ub.es
The G2019S leucine-rich repeat kinase 2 gene (LRRK2) mutation has been identified in a significant proportion of familial and sporadic cases of Parkinsons disease (PD). Until now, information on the neuropathological changes associated with the G2019S LRRK2 mutation has been sparse. We report a 77-year-old patient who presented with a 14 year history of PD but, unexpectedly, histopathological examination disclosed mild neuronal loss in the substantia nigra without
-synuclein, tau or ubiquitin cytoplasmic inclusions. A G2019S LRRK2 mutation was eventually detected. The present case confirms that clinical PD caused by G2019S mutations can be associated with non-specific nigral degeneration without Lewy
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