Gurney M, Stikvoort A, Nolan E, Kirkham-McCarthy L, Khoruzhenko S, Shivakumar R, Zweegman S, van de Donk NW, Mutis T, Szegezdi E, Sarkar S, O’Dwyer M. CD38 knockout natural killer cells expressing an affinity optimized CD38 chimeric antigen receptor successfully target acute myeloid leukemia with reduced effector cell fratricide. Haematologica 2022;107(2):437-445; https://doi.org/10.3324/haematol.2020.271908.