RAB1A and neoplasm: Table 2 lists the Emean and EC values in each group after nCRT. After nCRT, the Emean and EC values increased with increasing tumor stage, and the Emean and EC values of lesions at different pathological stages were significantly different (p = 0.006). There were statistically significant differences between the ypT0 and ypT1-2 groups (p = 0.031) and between the ypT0 and ypT3-4 groups (p < 0.001), whereas the ypT1-2 and ypT3-4 groups showed no significant difference (p = 0.686).