Laboratory tests on admission showed hypercalcemia (12.7 mg/dL), hypophosphatemia (0.90 mg/dL), normal intact-PTH level (41.0 pg/mL) and an increase in 1,25-dihydroxycholecalciferol level (148.7 pg/mL). The gene discussed is PTH; the disease is Hypercalcemia.