Laboratory analysis revealed hyponatremia (Na+ 129 mmol/L), hypochloremia (Cl− 93 mmol/L), hypokalemia (K+ 2.8 mmol/L), hypocalcemia (Ca++ 1.05 mmol/L), and elevated C-reactive protein (CRP) (16.8 mg/L), indicating systemic inflammation and hydroelectrolytic imbalance (Table 1). No clinical or biochemical evidence of malnutrition was observed. The gene discussed is CRP; the disease is Hyponatremia.