Previously published bulk transcriptomic data from 24 KS tumors compared to cognate normal skin biopsies revealed an increased expression of transcripts related to the vascular endothelial growth factor (VEGF) pathways, namely, FLT4 and KDR, which are receptors for VEGF C/D and B, respectively [12,13]. Here, FLT4 is linked to Kaposi's sarcoma.