CASR and nephrolithiasis: In one study examining the three common CASR SNPs rs1801725 (A986S), rs1042636 (R990G) and rs1801726 (Q1011E) in kidney stone formers and healthy controls, higher urinary calcium excretion was reported in participants with rs1801725 GG, rs1042636 GG or AG, rs1801726 CC genotype compared with participants with rs1801725 GG, rs1042636 AA, rs1801726 CC genotype [32].