Giuseppe Gaipa, PhD, M. Tettamanti Research Center, Pediatric Clinic University of Milano Bicocca, Monza, Italy, discusses the use of EuroFlow MRD measurement in the treatment of patients with CAR T-cell therapy. Speaking at the 24th Congress of the European Hematology Association (EHA) 2019, held in Amsterdam, Netherlands, Prof. Gaipa also mentions the challenges being faced.