BRAF gene copy status was not significantly correlated with gender (male, 9.5% vs. female, 12.5%; P>0.9999), tobacco-smoking (non-smoker, 0% vs. smoker, 15.8%; P=0.5320), pathological tumor (pT) status (pT1, 18.2% vs. pT2–4, 5.6%; P=0.5394), tumor stage (stage I vs. stage II–IV, P=0.9999) or age (<65 vs. ≥65, P=0.5320). Here, BRAF is linked to neoplasm.