CYP46A1 and nervous system disorder: More comprehensive reviews on CYP46A1, oxysterols, and the links between CYP46A1, cholesterol homeostasis in the brain, and neurological disorders can be found elsewhere (Russell et al., 2009; Moutinho et al., 2016; Bjorkhem et al., 2019; Loera-Valencia et al., 2019; Petrov and Pikuleva, 2019; Choi and Finlay, 2020; Griffiths and Wang, 2020; Sodero, 2020).