Although miR-214-3p’s exact role in LUAD is not fully understood, CircTADA2A can trap miR-214-3p and eukaryotic translation initiation factor 4A3 (EIF4A3) to boost mitogen-activated protein kinase 8 (MAPK8) levels, promoting invasion and migration in lung cancer cells [18]. The gene discussed is MAPK8; the disease is lung cancer.