SCN4A

SCN4A is a gene that provides instructions for making a protein called Nav1.4, which is a type of sodium channel in our nerve and muscle cells. These channels are essential for transmitting electrical signals that control muscle contractions and nerve functions. When SCN4A has mutations, it can disrupt the normal function of these channels, leading to conditions like periodic paralysis, myotonia, or other muscle disorders. Overall, SCN4A plays a critical role in muscle excitability and proper functioning of the nervous system.