ULK1 and head and neck squamous cell carcinoma: Abbreviations: CMA: chaperone-mediated autophagy; HNSCCs: head and neck squamous cell carcinomas; HPV: human papillomavirus; O-GlcNAc: O-linked β-N-acetylglucosamine; PTM: post-translational modification; ULK1: unc-51 like autophagy activating kinase 1