It is worth noting that, in this study, no significant difference was observed in the expression levels of MCM3AP-AS1 in different histological types (mucinous carcinoma, serous carcinoma, clear cell carcinoma, squamous cell carcinoma, and undifferentiated carcinoma in this study) and molecular subtypes (POLE ultramutated, microsatellite instability hypermutated, copy number low, and copy number high in this study). Here, MCM3AP is linked to undifferentiated carcinoma.