Table 2. SNPs with psychiatric illness associations and their location relative to the most proximal clock gene.

Gene	Illness Association	SNP	Position Relative to Gene
PER1	SCZ	rs3027232	Coding region of adjacent gene ALOXE3
NR1D2	SCZ	rs2001209	High density gene area ∼20 kb from NR1D2, intronic in adjacent gene RPL15
RORA	ADHDSCZ	rs922781rs1351546	intronic in RORAintronic in RORA
RORB	BD	rs10869435	intronic in RORB
RORC	SCZ	rs868866	intronic in TDRKH ∼20 kb downstream from RORC
DEC1	MDDBDSCZBD	4 SNPsrs1537720rs11794627rs10982664	Intronic DEC1DEC1 promoter, enriched chromatinIntronic DEC1Intronic DEC1
NPAS2	ADHD	rs11674199	Intronic NPAS2
ARNTL	BD	rs747601	∼20 kb upstream promoter region
ARNTL2	ADHD	rs11049004	Intronic in ARNTL2

The SNPs proximal to PER1 and RORC were determined to lie outside of these genes. The SNP proximal to NR1D2 was indeterminate. The remaining SNPs were determined to be located with the corresponding clock gene.