TY - JOUR TI - Impact of Minimal Residual Disease Detection by Next-Generation Flow Cytometry in Multiple Myeloma Patients with Sustained Complete Remission after Frontline Therapy AU - Terpos, E. AU - Kostopoulos, I.V. AU - Kastritis, E. AU - Ntanasis-Stathopoulos, I. AU - Migkou, M. AU - Rousakis, P. AU - Argyriou, A.T. AU - Kanellias, N. AU - Fotiou, D. AU - Eleutherakis-Papaiakovou, E. AU - Gavriatopoulou, M. AU - Ziogas, D.C. AU - Papanota, A.-M. AU - Spyropoulou-Vlachou, M. AU - Trougakos, I.P. AU - Tsitsilonis, O.E. AU - Paiva, B. AU - Dimopoulos, M.A. JO - Hemasphere PY - 2019 VL - 3 TODO - 6 SP - null PB - Ovid Technologies (Wolters Kluwer Health) SN - null TODO - 10.1097/HS9.0000000000000300 TODO - bortezomib; daratumumab; immunoglobulin A; immunoglobulin D; immunoglobulin G; melphalan, adult; aged; Article; B lymphocyte subpopulation; bone marrow biopsy; controlled study; disease association; drug megadose; erythroblast; female; flow cytometry; follow up; high throughput sequencing; human; maintenance therapy; major clinical study; male; middle aged; minimal residual disease; multiple myeloma; phenotype; priority journal; prospective study; treatment duration; tumor diagnosis; tumor volume TODO - Minimal residual disease (MRD) was monitored in 52 patients with sustained CR (≥2 years) after frontline therapy using next-generation flow (NGF) cytometry. 25% of patients initially MRD- reversed to MRD+. 56% of patients in sustained CR were MRD+; 45% at the level of 10-5; 17% at 10-6. All patients who relapsed during follow-up were MRD+ at the latest MRD assessment, including those with ultra-low tumor burden. MRD persistence was associated with specific phenotypic profiles: higher erythroblasts' and tumor-associated monocytes/macrophages' predominance in the bone marrow niche. NGF emerges as a suitable method for periodic, reproducible, highly-sensitive MRD-detection at the level of 10-6. © 2019 the Author(s). Published by Wolters Kluwer Health, Inc. ER -