Table 3.

Methylation status in postmortem suicide brains.

System	Findings	Brain region	Gene	References
GABAergic system	Promoter hypermethylation	Frontal cortex	GABAA α1 receptor	Poulter et al., 2008
Polyaminergic system	Promoter hypermethylation	Frontal cortex	SMOX	Fiori and Turecki, 2010
	Promoter hypermethylation	Frontal cortex	SAT1	Fiori and Turecki, 2011
	Promoter hypomethylation	BA44 (frontal cortex)	AMD1	Galfalvy et al., 2013
	Promoter hypomethylation	BA44 (frontal cortex)	ARG2	Galfalvy et al., 2013
Neurotrophic system	Promoter hypermethylation	Wernicke's area	BDNF	Keller et al., 2010
	3′UTR hypermethylation	Frontal cortex	TRKB.T1	Maussion et al., 2014
	Promoter hypermethylation	Frontal cortex	TRKB	Ernst et al., 2009
HPA axis	Promoter hypermethylation	Hippocampus	NR3C1 transcript variant 1B, IC and 1H	Labonte et al., 2012