MT-ND1 and neoplasm: As a result, three factors (maximum tumor diameter, pT stage, and ND1 mutation) were found to be significantly associated with CSS: tumor diameter (5-year CSS, 100% and 90% for ≤40 mm and >40 mm, respectively; p = 0.0415), pT stage (5-year CSS, 98.2% and 80.0% for ≤pT2 and ≥pT3, respectively; p = 0.0330), and somatic mutation in ND1 (5-year CSS, 89.5% and 100% for the presence and absence of somatic mutation/s in ND1, respectively; p = 0.0341) (Table 5).