PPFIA4 and neoplasm: Table 1 outlined the link between PPFIA4 expression and clinicopathological characteristics. The presence of PPFIA4 was significantly linked to large tumor size, advanced TNM stage, and lymph node metastasis, while there was no correlation of PPFIA4 expression with gender, age, differentiation and tumor stage. Additionally, individuals with high PPFIA4 expression had a poorer 5-year OS prognosis (Figure 7B, p-value = 0.03).