Depiction of the cannabinoid receptor type 1 gene (CNR1) genomic region, the location of rs2023239, and linkage disequilibrium (LD) throughout the region. A, The location of the CNR1 gene on chromosome arm 6q15. B, The location of the coding region (box indicated by the arrow), potential noncoding exons, and the untranslated region as depicted by Zhang et al.25 The regions of significant LD are depicted by the hashed rectangles. The asterisk shows the location of a predicted recombination hotspot. bp indicates base pair.