nominally significantP = 0.009
We observed that rare damaging variants in CYP1A2 displayed the strongest nominally significant associations with higher clozapine (β = 0.324, SE = 0.124, P = 0.009, R 2 = 0.233 %) and norclozapine (β = 0.320, SE = 0.115, P = 0.005, R 2 = 0.235 %) concentrations.