Numerous other studies have also reported associations between low TET2 transcript levels and poor survival [83, 121, 122], including OS in head and neck squamous cell carcinoma (HNSCC) (HR [95% CI] = 1.96 [1.01–3.77], p = 0.044) [121] and disease‐free survival in metastatic PCa (p < 0.001) [83] (Table 3). The gene discussed is TET2; the disease is head and neck squamous cell carcinoma.