LILRB1 expression is elevated in circulating monocytes of kidney transplant recipients. Notably, myeloid cells isolated from kidney biopsy specimens show up-regulation of LILRB1, LILRB2 and LILRB3 following AMR, highlighting the involvement of this receptor family in the immune response to allografts (87). This evidence concerns the gene LILRB2 and urogenital neoplasm.