BRAF and melanoma: Conversely, as autophagy also has a tumour‐suppressor function, activation of autophagy, for example by cannabinoids such as Δ9‐tetrahydrocannabinol (THC) or cannabidiol, has been shown to induce cytotoxicity of melanoma,25, 26 which may potentially overcome the resistance of melanoma to BRAF/MEK inhibition.