In the study with human hepatocellular carcinoma cell line (HepG2) which was incubated with 2 μM of B(a)P, CYP1A1 showed a 93‐fold and 79‐fold increase in expression on microarray 12‐ and 24‐h post‐dosing, respectively, whereas RNA‐seq demonstrated a 199‐fold (at 12 h) and 214‐fold (at 24 h) increases in CYP1A1 expression (Van Delft et al. 2010). The gene discussed is CYP1A1; the disease is hepatocellular carcinoma.