• 28-year old UK woman (Perharic-Walton and Murray, 1992): Chinese herbal mixture with 8 different herbs for 3–5 months. Jaundice. ALT value not available. Reexposure: episode of hepatitis reported without liver values, acute liver failure, died despite emergency liver transplantation. Both ALTb and ALTr not available → uninterpretable reexposure. The gene discussed is GPT; the disease is hepatitis A virus infection.