Furthermore, blood tests revealed leucopenia with associated lymphocytosis and increased mononuclear cells, hyponatremia (129 mEq/L), decreased estimated glomerular filtration rate (eGRF) with increased plasma urea (99 mg/dL), and a rise in C-reactive protein (CRP) (42.75 mg/dL). The gene discussed is CRP; the disease is Hyponatremia.