HSP90AA1 and head and neck squamous cell carcinoma: Previous studies have demonstrated that in cancer, HSP90α is not only upregulated but also its ATPase activity is increased ≈50‐fold.[28] Our pan‐cancer analysis revealed that HSP90α was upregulated across multiple tumor types, and patients with elevated levels of HSP90α experienced poor prognosis, including those with HNSCC (Figure S3, Supporting Information).