Hippo signalling pathway is a development control signal pathway, which plays a regulatory role in cell proliferation and apoptosis.24 YAP is considered as the main effector of the Hippo signalling pathway in various organisms and tissues.25 Knockdown of lncRNA GHET1 suppresses the cell proliferation and invasion by down‐regulating YAP1 expression in the non‐small cell lung cancer.26 YAP‐1 functions as an oncogenic and a putative prognostic biomarker of recurrence in patients with PTC.27 Here, YAP1 is linked to lung cancer.