CDKN2A and oropharynx squamous cell carcinoma: In the realm of oropharyngeal squamous cell carcinoma (OPSCC), the distinction between T categories, particularly the designation of a tumor as moderately advanced (T4a for p16‐negative tumors, T4 for p16‐positive tumors), also hinges upon the invasion of extrinsic tongue musculature (genioglossus, hyoglossus, styloglossus, and palatoglossus muscles [PGMs]).1, 2