Figure 5. TCF19 on chromosome 6p21.33 can promote tumor cell proliferation, invasive and migratory ability by enhancing the transcription of SRSF6, etc., thus acting as a tumor-promoting factor in thyroid cancer, while Rs2073724 located in exon 3 of TCF19 negatively regulates the transcription and acts as a tumor suppressor. The C>T variant of rs2073724 affects the TCF19 function by damaging its transactivating ability.