KDR and endometriosis: In 2022, Taratula et al., developed a peptide-modified hexagonal iron oxide nanoparticle coated with PEG-PCL nanocarrier to specifically target vascular endothelial growth factor receptor 2 (VEGFR-2), also known as kinase insert domain receptor (KDR), aiming to enhance the therapeutic efficacy for endometriosis treatment (Figure 3G) 67.