Reduced penetrance of the PSEN1 H163Y autosomal dominant Alzheimer mutation: a 22-year follow-up study. Alzforum, 18 May 2018 Thordardottir S, Rodriguez-Vieitez E, Almkvist O, Ferreira D, Saint-Aubert L, Kinhult-Ståhlbom A, Thonberg H, Schöll M, Westman…