BRD4 and head and neck squamous cell carcinoma: This analysis demonstrated a significant elevation in BRD7 in the AT subtype compared to other subtypes in our HNSCC cell lines (Supplementary Figures S2C,D), and a significant elevation in BRD4 expression in AT vs. BA and AT vs. MS comparisons in the HNSCC TCGA data (Supplementary Figures S2E,F).