Table 4.

Association analyses of extremely discordant sibling pairs.

Obese	Thin			Z	P-value
rs1421085	TT	TC	CC
TT	15	6	0	2.14	p = 0.032
TC	14	32	2
CC	2	7	8
rs17817449	TT	TG	GG
TT	18	6	0	3.57	p = 3.6 × 10-4
TG	13	34	1
GG	2	11	8
rs9939609	TT	TA	AA
TT	18	7	0	3.09	p = 0.002
TA	14	30	1
AA	2	12	8