Quercetin inhibits proliferation and invasion of lung adenocarcinoma A549 cells by suppressing the STAT3 signaling pathway [19], while kaempferol—with established anticancer, antiviral, and anti-inflammatory activities—reduces NSCLC cell proliferation and migration, potentially via ERRα pathway modulation [20]. The gene discussed is ESRRA; the disease is non-small cell lung carcinoma.