FRAMINGHAM, MA / ACCESS Newswire / November 19, 2025 / Xenetic Biosciences, Inc. (NASDAQ:XBIO) ("Xenetic" or the "Company"), a biopharmaceutical company focused on advancing innovative immuno-oncology technologies addressing difficult to treat cancers, today announced it has executed a 4-month extension of its collaboration with The Scripps Research Institute ("Scripps Research") and the lab of Dr. Alexey Stepanov, Institute Investigator at Scripps Research effective November 1, 2025, to advance the development of the Company's research and development program evaluating the combination of systemic DNase I and CAR T-cell therapies. Xenetic's systemic DNase I candidate, XBIO-015, is currently in preclinical development in combination with CAR-T cell therapy for both hematologic and solid tumors.