APP and Alzheimer disease: In contrast, mutations in APP and in genes that regulate APP processing – such as PSENs and BRI2/ITM2B – cause familial AD (FAD) and the AD-like familial British dementia and familial Danish dementia (De Strooper, 2007, De Strooper et al., 2010, De Strooper and Voet, 2012, Garringer et al., 2010, Matsuda et al., 2005, Giliberto et al., 2008, Matsuda et al., 2009, Tanzi, 2012, Vidal et al., 1999, 2000).