Laboratory examination showed hypercalcemia: 2.81 mmol/l (normal range: 2.08–2.71 mmol/l), hypophosphatemia: 0.66 mmol/l (normal range: 0.81–1.45 mmol/l), and a high PTH level: 916.0 pg/ml (normal range: 11.0–67.0 pg/ml). The gene discussed is PTH; the disease is hypercalcemia disease.