Compared to its mRNA transcription in the heart, the Nav1.5/SCN5A gene was also expressed in high levels in the brain, especially limbic regions of the brain.

• 此前；在对人神经母细胞瘤细胞钠通道的基因克隆中；发现Nav1.；5/SCN5A基因的第6A外显子参与编码该通道