Fig. 4

Violin diagram showing the expression levels of five hub genes are highly corrected with PAH, especially with IPAH and SSc-PAH. These hub genes include CHEK1 (a-b), SMC2 (c-d), SMC4 (e-f), KIF23 (g-h) and CENPE (i-j). P-values were respectively obtained from two-sample Wilcoxon test and multiple-sample Kruskal−Wallis test