SCN9A

SCN9A (Sodium Voltage-Gated Channel Alpha Subunit 9): SCN9A encodes a voltage-gated sodium channel (NaV1.7) that is predominantly expressed in the peripheral nervous system, especially in pain-sensing neurons (nociceptors). Mutations in SCN9A can result in gain- or loss-of-function effects, causing conditions such as erythromelalgia or congenital insensitivity to pain. As a key regulator of pain sensation, NaV1.7 is a crucial target for developing new pain-relief medications.

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