YY1 and laryngeal carcinoma: As revealed in Figures 4C–7, the effects of YY1 knockdown on laryngeal cancer proliferation, apoptosis, and migration were significantly reversed by MYCT1 knockdown compared to the controls (P < 0.05), respectively, implying that YY1 regulates laryngeal cancer proliferation, apoptosis, and migration by directly repressing MYCT1.