STK4 and cervical cancer: Interestingly, sterile 20-like family kinases serine/threonine protein kinase 4 (STK4), also referred to as mammalian sterile 20-like protein (MST1), is one of the kinase cascades of the Hippo pathway, while inhibition of miR-18a can activate the STK4-Hippo pathway, thus delaying the cervical cancer cell proliferation [14].