TRPA1 and hepatocellular carcinoma: In HCC-515 (upper panel), TRPA1-FGFR2 complex formation was constitutive and prevailed under non-stimulated conditions, and following stimulation with fibroblast growth factor 9 (FGF9; FGFR2 agonist) and/or Allyl isothiocyanate (AITC; TRPA1 agonist).