KIF4A and neoplasm: Possible Mechanisms Underlying the Tumor-Suppressive Role of KIF4A in Cervical Cancer: Although KIF4A generally functions as an oncogene across multiple malignancies, accumulating evidence indicates that in cervical cancer it exhibits a paradoxical tumor-suppressive behavior, with high KIF4A expression correlating with improved OS and PFS and experimental data showing reduced proliferation and migration upon its overexpression.