BUB3 and non-small cell lung carcinoma: In their in vitro luciferase assay, the rs7897156C‐to‐T change increased Bub3 promoter activity and Bub3 mRNA expression of rs7897156CT or TT genotypes was significantly higher than that of rs7897156CC genotype, suggesting that Bub3 rs7897156C>T may be a functional SNP and changes in rs7897156C‐to‐T may lead to overexpression of Bub3 and may effect mitotic checkpoint function, thereby affecting the prognosis of patients with NSCLC.