Table 7.

Linkage results from seven genome-wide linkage studies

Study	Sample	Population	Design	Region	LOD
Fisher et al. (2002)	Caucasian and African American	USA	Affected sib pair	16p13	3.7
Ogdie et al., (2003)				17p11	3.0
Ogdie et al. (2004)				12p13	2.6
Ogdie et al. (2006)				5p13	2.6
				6q12	3.3
Bakker et al. (2003)	Caucasian	Dutch	Affected sib pair	15q15	3.5
				7p13	3.0
				9q33	2.1
Arcos-Burgos (2004)	Paisa descent	Columbia	Multigenerational pedigree	17p11	2.8
				11q22	2.5
				5q33.3	2.4
Hebebrand et al. (2006)	Caucasian	German	Affected sib pair	5p13	2.6
Farone et al. (2008)	Caucasian and African American	USA	Affected sib pair	No LOD scores greater than 2, indicating there was no convincing evidence of linkage
Asherson et al. (2008)	Caucasian	8 European countries	Affected sib pair	16q23	3.1
				9q22	2.1
Romanos et al. (2008)	Caucasian	German	Multigenerational pedigree	14q12	4.5
				2q35	3.4
				6q22-23	3.32

(Arcos-Burgo et al., 2004; Asherson et al., 2008; Bakker et al., 2003; Faraone et al., 2008; Fisher et al., 2002; Hebebrand et al., 2006; Ogdie et al., 2006; Ogdie et al., 2004; Ogdie et al., 2003; Romanos et al., 2008)