TCN1 and head and neck squamous cell carcinoma: On the contrary, the expression of TCN1 was significantly lower than that in normal control tissues in lymphoid neoplasm diffuse large B cell lymphoma (DLBC), breast invasive carcinoma (BRCA), liver hepatocellular carcinoma (LIHC), testicular germ cell tumors (TDCT), acute myeloid leukemia (LAML), and head and neck squamous cell carcinoma (HNSC) (Fig. 1a).