The variables used included altered mental status, leukopenia (white blood cell count <4000/μL), thrombocytopenia (platelet count <1 × 103/μL or 80 × 103/μL), a prolonged activated partial thromboplastin time (>35 seconds), and a normal CRP level (≤1.0 mg/dL). The gene discussed is CRP; the disease is Decreased total leukocyte count.