EGFR and lung cancer: developed PEG‐engrafted GO as biocompatible carriers for gene delivery of antisense PNAs into cells demonstrating improved gene delivery efficiency and reduced toxicity.[97] A PNA oligomer, designed to target the epidermal growth factor receptor gene (EGFR), was adsorbed onto PEG‐nGO through hydrophobic (π–π) interactions and efficiently delivered into A549 lung cancer cells via endocytosis, without affecting cell viability, while exhibiting lower cytotoxicity and higher aqueous dispersibility.