PLK2 and keloid: Autophagy modulation altered ADRB2 expression (decreased with EBSS and increased with chloroquine), whereas PLK2 expression remained largely unchanged.<h4>Discussion</h4>These findings identify ADRB2 and PLK2 as under-recognized autophagy- andimmunity-related candidate biomarkers in keloids, highlighting their potential relevance asdiagnostic indicators and future therapeutic research targets.