MX1 and lung cancer: Four years ago, we recognized that the granular cytoplasmic structures formed by endogenous human MxA and exogenously expressed human GFP-MxA in the cytoplasm of human liver and lung cancer cells (Huh7 and A549 respectively) represented novel liquid–liquid phase-separated (LLPS) membraneless biomolecular condensates [19,20,21,22,23,24].