UBA1 and reading: UBA1 is positively correlated with MSI in 8 types of tumours, including LUSC, KIRC, STAD, UCEC, UVM, TGCT, LUAD and LIHC, while negatively correlated with MSI in DLBC, pheochromocytoma and paraganglioma (PCPG) and READ (Figure S8B).