Xenetic Biosciences, Inc. is a clinical-stage biopharmaceutical company. The Company is focused on the research and development of certain pharmaceutical products for use in humans that includes the use of the Company's platform technologies that enables the creation of drug therapies primarily for orphan indications. The Company's technologies include PolyXen, Virexxa, OncoHist and ImuXen. The Company is focused primarily on developing its lead product candidates, including ErepoXen, Virexxa and OncoHist, and PolyXen technology. The Company's lead product candidate ErepoXen, a polysialylated form of erythropoietin (EPO) for the treatment of anemia in pre-dialysis patients with chronic kidney disease, and Food and Drug Administration (FDA) orphan designated oncology therapeutics Virexxa and OncoHist for the treatment of progesterone receptor negative endometrial cancer and refractory Acute Myeloid Leukemia, respectively. It is also developing PSA-FVIII.