BRAF and melanoma: We assessed the effect of LL‐Z1640‐2 and patulin in the melanoma cell lines A375, HT144, COLO829 and SK‐MEL‐28, the BRAF inhibitor‐resistant cell lines established in our previous study (A375vemR‐3 and HT144vemR‐3),4 and normal human melanocytes (NHMs).