MYC and breast cancer: JQ1 selectively targets and inhibits BET bromodomain, and numerous studies have reported that it suppresses tumor growth through c‐Myc‐dependent and c‐Myc‐independent mechanisms.8, 9 In the present study, we found that JQ1 induces the activity of LKB1/AMPK pathway and autophagy in BC cells, which contributes to the cell proliferation inhibition.