SCN4A and neoplasm: As shown in Figure 2, only the expression of SCN4A (p = 0.049) and SCN7A (p = 0.011) was significantly changed; furthermore, the trends in SCN4A and SCN7A expression in tumour and non-tumour tissues were consistent with the results in the UALCAN database, in which the expression of SCN4A was higher in tumours and SCN7A was lower in tumours.