Similar to our previous work with different BET inhibitors in melanoma 7, the half maximal inhibitory concentration (IC50) values for JQ1 were variable across a panel of BRAF‐mutant melanoma cell lines ranging from less than 1 μmol/L to more than 10 μmol/L after 72 h of exposure (Fig. 1A; IC50 and confidence intervals (95% C.I.): SK‐MEL100 = 0.57 μmol/L [0.1–2.1]; A375 = 3.08 μmol/L [1.5–5.9]; 451Lu=1.09 μmol/L [0.2–4.5]; SK‐MEL28 = 52 μmol/L [44.5–61.9]). This evidence concerns the gene BRAF and melanoma.