Table 3:

Prevalence of neuroradiologic anomalies^a

(N (%))	All	FOXC1	PITX2	No Genetic Diagnosis
Thin optic chiasm	5/12 (41.7)	3/8 (37.5)	2/2 (100)	0/2 (0.0)
Nonspecific WM hyperintensities	5/12 (41.7)	4/8 (50.0)	1/2 (50.0)	0/2 (0.0)
Corpus callosal thinning	4/12 (33.3)	3/8 (37.5)	0/2 (0.0)	1/2 (50.0)
Ventriculomegaly or ventriculoperitoneal shunt	4/12 (33.3)	3/8 (37.5)	0/2 (0.0)	0/2 (0.0)
Hemispheric or global cerebellar hypoplasia	5/12 (41.7)	3/8 (37.5)	1/2 (50.0)	0/2 (0.0)
Oblong pons	3/12 (25.0)	2/8 (25.0)	0/2 (0.0)	1/2 (50.0)
Brainstem indentation secondary to tortuous vessels	3/12 (25.0)	3/8 (37.5)	0/2 (0.0)	0/2 (0.0)
Circle of Willis abnormalities	3/12 (25.0)	3/8 (37.5)	0/2 (0.0)	0/2 (0.0)
Vertebrobasilar artery dolichoectasia	6/12 (50.0)	6/8 (75.0)	0/2 (0.0)	0/2 (0.0)
Absent/hypoplastic olfactory bulb	6/12 (50.0)	5/8 (62.5)	0/2 (0.0)	1/2 (50.0)

^aData are (No.) (%).