A voltage-gated sodium channel subtype found widely expressed in nociceptive primary sensory neurons. Defects in the SCN9A gene, which codes for the alpha subunit of this sodium channel, are associated with several pain sensation-related disorders.

Synonyms: 0, Type 9 Voltage Gated Sodium Channel, Voltage Gated Sodium Channel Type 9, Voltage-Gated Sodium Channel Type 9 Subunit alpha, SCN9A Sodium Channel alpha Subunit, NAV1.7 Voltage Gated Sodium Channel, NAV1.7 Voltage-Gated Sodium Channel, Type 9 Voltage-Gated Sodium Channel, Voltage-Gated Sodium Channel Type 9, Voltage Gated Sodium Channel Type 9 Subunit alpha, Peripheral Sodium Channel 1