function ‘magnesium ion binding’, which applies to two genes (ERCC4 and PDE10A). We further investigated potential commonalities among significant genes using the BioGPS online database. Six of the genes (ARHGAP22, ERCC4, NAG, SELPLG, TOX2 and ZNF330) are highly expressed in the blood; NAG is also expressed in the testis germ cell, and TOX2 is highly expressed in the thymus and lung. LOC343052 exhibits high expression levels in the ciliary ganglion, thalamus and trachea, whereas PDE10A is most highly expressed in the caudate nucleus.
