The p.P56S mutation in the VAPB gene is not due to a single founder: first European case. [Letter to the editor] - Funke, A. D.; Esser, M.; Krüttgen, A.; Weis, J.; Mitne Neto, Miguel; Lazar, M.; Nishimura, A. L.; Sperfela, A. D.; Trillenberg, P.; Senderek, Jan; Krasnianski, M.; Zatz, Mayana; et al. (Clinical Genetics, 2010)