LRP4 and Alzheimer disease: Aside from SorLA, Lrp1 (Kang et al., 1997), Lrp1b (Shang et al., 2015), Lrp2 (Wang et al., 2011), Lrp4 (Vargas et al., 2010), Lrp6 (De Ferrari et al., 2007) and Apoer2 (Ma et al., 2002) have been associated with AD risk.