Top, Genomic structure of CASR. The gene structure of CASR is based on transcript NM_0003888. The direction of transcription and the exons are indicated by the arrow and the number, respectively. The size of the gene is indicated in scale at the top of the figure. Bottom, Pairwise LD (D′) estimates are provided in each box. No D′ estimates is in indicated by D′ = 0. More intensely colored boxes depict stronger LD. AA, African-American; UTR, untranslated region.