Live feed08:30:00·23dPRReleasevia QuantisnowGT Biopharma Announces First Patient Dosed in Phase 1 Trial of GTB-5550, a B7-H3-Targeted Natural Killer (NK) Cell Engager for Solid TumorsByQuantisnow·Wall Street's wire, on your screen.GTBP· GT Biopharma Inc.Health Care