DDB2 and gastric adenocarcinoma: Through correlation analysis between the expression values of survival-related alternative splicing factors and the constructed prognostic models, higher mRNA levels of DDB2 were observed in STAD patients compared with normal ones (including stages of STAD progression, nodal metastasis status, and gender) in the UALCAN dataset (p < 0.05) (Figure 7c and Supplemental Figure S2a–c).