showed a trendp = 0.045
Analyses on specific metabolizer phenotypes showed a trend for higher frequency of CYP2D6 ultrarapid metabolizers (UMs) in remitters compared with non-remitters in patients with TRD (χ 2 = 4.76, p = 0.045), but not in patients without TRD (χ 2 = 0.02, p = 1.00, Supplementary Table S9 ).