Complete blood count showed anemia, thrombocytopenia, leucopenia and lymphopenia (with a lymphocyte nadir of 400 cells/μL, CD4+ T-cell count of 195 cells/μL, CD8+ T-cell count of 202 cells/μL and CD4+/CD8+ ratio of 0.97), and blood chemistry tests revealed an elevation in CRP and interleukin (IL)-6 concentrations (with peaks of 65.2 mg/L and 42.2 pg/mL, respectively), hypoalbuminemia and a reduction in estimated glomerular filtration rate. The gene discussed is CD8A; the disease is anemia (phenotype).