Giuseppe Gaipa, PhD, M. Tettamanti Research Center, Pediatric Clinic University of Milano Bicocca, Monza, Italy, discusses the use of MRD by flow cytometry to measure the individual response of each patient to treatment. Speaking at the 24th Congress of the European Hematology Association (EHA) 2019, held in Amsterdam, Netherlands, Prof. Gaipa also mentions the need for increased technique sensitivity to help meet the clinical needs of patients.