CASR and familial hypocalciuric hypercalcemia: In order to confirm that the remaining hypercalcemia was due to FHH, we found that his cousin carried the same CASR, c.644A>G, p.Asp215Gly (Fig. 2), and had iCa of 1.44 mmol/L and PTH of 2.1 pmol/L without any other symptoms of disease.