WDFY3 and head and neck squamous cell carcinoma: To further explore the expression of these seven prognostic CRLs, qRT-PCR analysis showed that the expression levels of AP001372.2, MIR9-3HG, AL160314.2, POLH-AS1, and AL109936.2 were upregulated, while AC090587.1 and WDFY3-AS2 were downregulated in HNSCC cell lines compared with normal cell lines (Fig. 9).