Two days later at a follow-up with his pediatrician due to abdominal pain, enlarged liver was noted on examination and LFTs worsened: ALT, 152 IU/L; AST, 120 IU/L; ALP, 737 IU/L; TB, 8.8 mg/dL with peripheral eosinophilia with an absolute count of 900/μL. Referral was made to pediatric liver specialist 5 days later when TB was at 9.9 mg/dL. The gene discussed is GPT; the disease is tuberculosis.