PCDH8 and neoplasm: Cox proportional-hazards regression for these 6 probes demonstrated that 3 probes represented the most statistically significant indicators of survival compared to tumor stage, grade, maximum dimension or patient gender; SFRP1-cg13398291 (p = 0.009, HR = 2.40, CI = 1.25–4.64), BNC1 (p = 0.004, HR = 2.36, CI = 1.32–4.20) and PCDH8 (p = 0.012, HR = 2.13, CI = 1.18–3.82) (Table S7 in File S1).