Corsale, A.M., M. Speciale, C. Aquilina, E. Gigliotta, A. Rizzuto, M. Biondo, E. Tofacchi, A. Romano, M. Di Simone, A. Gallo, N. Caccamo, F. Dieli, S. Meraviglia, S. Siragusa, and C. Botta. 2026. “CO21 | Integrated Multiomic Immune Profiling Defines the Biological Basis of Minimal Residual Disease Persistence in Multiple Myeloma: A.M. Corsale1, M. Speciale2, C. Aquilina1, E. Gigliotta1, A. Rizzuto1, M. Biondo3, E. Tofacchi1, A. Romano1, M. Di Simone1, A. Gallo4, N. Caccamo5, F. Dieli5, S. Meraviglia5, S. Siragusa1, C. Botta1 | 1Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo; 2Department of Surgical, Oncological and Stomatological Disciplines, DICHIRONS, University of Palermo; 3Department of General Surgery and Medical-Surgical Specialties, Hematology Section, University of Catania; 4Department of Research, IRCCS-ISMETT, Istituto Mediterraneo Per I Trapianti E Terapie Ad Alta Specializzazione; 5Department of Biomedicine, Neuroscience and Advanced Diagnosis, Bi. N. D. , University of Palermo”. Haematologica 111 (s1). Pavia, Italy. https://doi.org/10.3324/haematol.2026.s1.34.