As for the subgroup ‘chemotherapy vs. non-chemotherapy’ (n = 106), SFT was found to be positively correlated with education years (β = 0.70, 95% CI: 0.34~1.07, p < 0.001) and anxiety (β = 0.15, 95% CI: 0.25~1.12, p = 0.002); and negatively correlated with log IL-4 (β = −4.76, 95% CI: −8.19~−1.32, p = 0.007). This evidence concerns the gene IL4 and Anxiety.