Similar to the findings in patients with FHH, serum calcium levels were significantly elevated in Gna11+/– and Gna11–/– mice (Figure 2A), and serum PTH levels were inappropriately normal, with a trend for an increase in Gna11+/– and Gna11–/– mice (Figure 2B). The gene discussed is GNA11; the disease is familial hypocalciuric hypercalcemia.