FTH1 and head and neck squamous cell carcinoma: Multivariate Cox survival analysis showed that SOCS1 (HR 0.7, 95%CI 0.51–0.97, p < 0.05) and FTH1 (HR 1.62, 95%CI 1.12–2.35, p < 0.05) were independent prognostic factors for HNSCC (likelihood ratio test p = 3 × 10–6, Wald test p = 5 × 10–6, score log-rank test p = 9 × 10–9) (Figure 2I).