Fig. 1: RBBP8 gene expression in different molecular types of PCM.

a Comparison of RBBP8 expression levels at different amplification levels of 1q21, The X axis represents the 1q21 amplification level and the Y axis represents gene expression. RBBP8 gene expression was measured as log2. P = 0.0013, Kruskal–Wallis test. b Comparison of RBBP8 expression levels in PCM of seven molecular subtypes. The X axis represents different molecular subtypes and the Y axis represents gene expression (log2). P < 2.2e-16, ANOVA test, ns, * and **** indicate P > 0.05, P ≤ 0.05, and P  ≤ 0.0001, respectively. The average of the entire data is used as a reference group. Each group level is compared with the reference group. Add a horizontal dashed line at the average of reference group