Fig. 1

SNCA transcriptional level in BLCA is downregulated. A Box-whisker plots showing the expression levels of SNCA in tumor tissues and normal tissues, according to t test in TCGA by GEPIA2. B Box-whisker plots showing the expression levels of SNCA in tumor tissues and the normal tissues, according to t test in TCGA by UALCAN. C-F The expression levels of SNCA in tumor tissues and the normal tissues from GSE13507, GSE3167, GPL570 and GPL96. G-L Box-whisker plots showing the SNCA transcription in subgroups of patients with BLCA, stratified based on age (G), individual cancer stage (H), gender (I), race (J), smoking habits (K), and body weight (L). The t test was used to estimate the significance of difference in gene expression levels between groups. *, p < 0.05; **, p < 0.01; ***, p < 0.001; ****, p < 0.0001