The laboratory results were as follows: white blood cell count, 6440/mm3 with lymphopenia (lymphocyte 322/mm3); haemoglobin, 9.1 g/dL; platelet, 148,000/mm3; erythrocyte sedimentation rate (ESR), 72 mm/hr.; C-reactive protein (CRP), 0.44 mg/dL; aspartate aminotransferase (AST), 95 (1–40) IU/L; alanine aminotransferase (ALT), 30 (1–40) IU/L; creatine kinase (CK), 128 (20–270) IU/L; lactate dehydrogenase (LDH), 553 (100–225) g/dL; myoglobin, 47.1 (0–106) ng/mL; aldolase, 10.8 (0–7.6) U/L; C3, 83 (83–193) mg/dL; and C4, 19 (15–57) mg/dL. The gene discussed is GPT; the disease is lymphopenia.