PLCG2 and neurodegenerative disease: The missense variant P522R in PLCG2 (rs72824905-G, P = 5.38 × 10−10, OR = 0.68) was shown to be protective, not only in the context of AD4,5, but also in other neurodegenerative diseases such as frontotemporal dementia and dementia with Lewy bodies6.