Additionally, analysis of BUB1 mRNA expression in the TCGA MPM dataset—as an indicator of tumor cell proliferation—revealed a strong positive correlation between BUB1 expression and well-established proliferation and cell cycle markers, Ki67, PCNA, CCNB1, and CDC20 (Figs. 3E and S4C). The gene discussed is BUB1; the disease is neoplasm.