P1362: DEVELOPMENT OF A NOVEL ONCOLYTIC VIRUS -THEO-310 - SPECIALISED FOR TARGETING THE BONE MARROW TUMOUR MICROENVIRONMENT OF MULTIPLE MYELOMA PATIENTS - Rebecca Bamford; Shayda Maleki-Toyserkani; Will Taverner; Josh Freedman; Matt Hayman; Manoj Saini; Sarah Gooding; Karthik Ramasamy; Kerry Fisher; Margaret Duffy (HemaSphere, 2023)