The TRPA1 gene is located on chromosome 8q21.11 (GRCh38.p12), and genetic variations in TRPA1 have been associated with various pain syndromes (e.g., familial episodic pain syndrome) [17] and conditions (e.g., neuropathic and inflammatory pain) [51,56]. This evidence concerns the gene TRPA1 and familial episodic pain syndrome.