BECN1 and neoplasm: In addition, PD‐L2 can also induce autophagy through beclin‐1, as another upstream signal of the RhoA‐ROCK‐LIMK2 signaling pathway, beclin‐1 can also control cellular autophagy by regulating RhoA‐ROCK‐LIMK2 signaling pathway and also influence the tumor metastasis.59, 151, 152, 153