The three cisplatin-resistant HNSCC cells, including Cal27CP, SCC25CP, and FaDu-CP, also showed much higher expression of ETS-1 compared to their parental partner cells, whereas UMSCC17B-CP showed lower ETS-1 expression in comparison to UMSCC17B cells (Fig. 1b). Here, CP is linked to head and neck squamous cell carcinoma.