Biochemical assays revealed hypernatremia (149 mmol/L), severe hypercalcemia (4.08 mmol/L), hypophosfatemia (0.62 mmol/L), elevated levels of PTH (252 ng/L), reduced vitamin D (32 nmol/L) and slight renal failure (urea 8.7 mmol/L, creatinine 112 μmol/L). The gene discussed is PTH; the disease is Hypercalcemia.