Alexey Bersenev, MD, PhD, of Yale University, New Haven, CT, discusses ‘out of specification’ CAR T-cell therapies and considerations with using these products. Dr Bersenev was speaking from the 1st European CAR T-Cell Meeting, held in Paris, France, co-organized by the European Society for Blood & Marrow Transplantation (EBMT) and the European Hematology Association (EHA).