SOAT1 and glioblastoma: Sterol O‐acyltransferase 1 (SOAT1) is a key enzyme which could convert endoplasmic reticulum (ER) cholesterol to cholesterol esters (CE) to store in lipid droplets (LDs), and inhibition of SOAT1 could effectively suppress SREBP‐1 and block glioblastoma growth.22