In another recent work, DOX was successfully delivered to cancer cells with high selectivity using a composite material based on rGO functionalized with polydopamine to enhance the photothermal effect of rGO, then coated with mesoporous silica to increase DOX loading, and, finally, covered with HA to increase biocompatibility and ensure the selectivity of NIR-induced drug delivery to CD44 overexpressing cancer cells [183]. The gene discussed is CD44; the disease is cancer.