Pilot study indicate role of preferentially transmitted monoamine oxidase gene variants in behavioral problems of male ADHD probands

Table 4 Analysis of association between maternal age at pregnancy and MAO variants of male ADHD probands

Genes	Variants	Alleles	≤ 26 yrs	> 26 yrs	Chi-square (p-value)	Relative risk (95% confidence interval)
MAOA	30 bp-uVNTR	3R	0.76	0.61	4.03 (0.05)	1.26 (1.01 – 1.57)
	30 bp-uVNTR	4R	0.24	0.39		1.26 (1.01 – 1.57)
	rs5906883	A	0.73	0.61	2.66 (0.10)	–
	rs5906883	C	0.27	0.39		–
	rs1465107	G	0.25	0.36	2.3 (0.13)	–
	rs1465107	A	0.75	0.64		–
	rs1465108	A	0.75	0.64	2.3 (0.13)	–
	rs1465108	G	0.25	0.36		–
	rs5905809	C	0.28	0.39	2.09 (0.15)	–
	rs5905809	G	0.72	0.61		–
	rs5906957	A	0.72	0.61	2.09 (0.15)	–
	rs5906957	G	0.28	0.39		–
	rs6323	T	0.15	0.33	7.22 (0.007)	1.27 (1.06 – 1.52)
	rs6323	G	0.85	0.67		1.27 (1.06 – 1.52)
	rs1137070	C	0.25	0.40	3.87 (0.05)	1.23 (1.00 – 1.54)
	rs1137070	T	0.75	0.60		1.23 (1.00 – 1.54)
MAOB	rs4824562	A	0.83	0.81	0.06 (0.81)	–
	rs4824562	G	0.17	0.19		–
	rs56220155	G	0.33	0.20	3.66 (0.06)	1.19 (1.00 – 1.44)
	rs56220155	A	0.67	0.80		1.19 (1.00 – 1.44)
	rs2283728	T	0.23	0.16	0.98 (0.32)	–
	rs2283728	C	0.77	0.84		–
	rs2283727	C	0.77	0.84	0.98 (0.32)	–
	rs2283727	A	0.23	0.16		–
	rs3027441	C	0.25	0.15	2.51 (0.11)	–
	rs3027441	T	0.75	0.85		–
	rs6324	C	0.75	0.85	2.51 (0.11)	–
	rs6324	T	0.25	0.15		–
	rs3027440	T	0.83	0.86	0.31 (0.58)	–
	rs3027440	C	0.17	0.14		–

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