ETNPPL and mood disorder: Interestingly, the level of Agxt2l1 (alanine‐glyoxylate aminotransferase 2‐like 1), a gene whose function is poorly characterised but for which a dysregulation in prefrontal cortex has been associated with mood disorders 32, differed significantly between WT_AU and WT_AI mice (P < 0.01, RP score) and was increased with age in the hippocampus of both WT_AU and KO_A (P < 0.001, RP score) but not WT_AI mice (Figs 2 and 3).