Tumor/normal (T/N) ratio of the APOBEC3B/β-actin mRNA level did not correlate with gender (male vs. female, P=0.4694), ages (age ≤65 vs. >65, P=0.9050) and smoking status (smoker vs. non-smoker, P=0.1151). The gene discussed is ACTB; the disease is neoplasm.