In order to search for tumor promoters in thyroid cancer, we selected 10 genes that were significantly up-regulated in B-CPAP cells, including ARL6IP1, CDC20, GAS2L3, NEK2, KIF20A, HMMR, CDCA8, CDK1, POLQ, and GBP2 (Figure S1A). The gene discussed is KIF20A; the disease is thyroid cancer.