LDHAP4 and head and neck squamous cell carcinoma: The role of the remaining 7 m6A-associated pseudogenes (LDHAP4, LDHAP7, EEF1A1P6, EEF1A1P11, DDX12P, CLUHP3, and RRN3P3) has not been reported in the previous literature and has been coming up in our research, which was indispensable and identified as a good prediction of outcome in HNSCC.