Tobias Bexte, cand.med., University Hospital Frankfurt, Goethe University, Frankfurt, Germany, discusses his abstract on lentivirally and alpharetrovirally engineered CD19 specific chimeric antigen receptor (CAR) natural killer (NK) cells and their use in acute lymphoblastic leukemia (ALL). This interview was recorded via an online conference call with The Video Journal of Hematological Oncology (VJHemOnc).