MAPT and psychotic disorder: Post-mortem analyses have demonstrated that an increased burden of neurofibrillary tangles (Zubenko et al., 1991; Förstl et al., 1994; Farber et al., 2000) and phosphorylated tau (Förstl et al., 1994; Farber et al., 2000; Murray et al., 2014; Koppel et al., 2014) is associated with psychosis.