RT Journal Article T1 Applicability of probabilistic graphical models for early detection of SARS-CoV-2 reactive antibodies after SARS-CoV-2 vaccination in hematological patients. A1 Piñana, Jose Luis A1 Rodriguez-Belenguer, Pablo A1 Caballero, Dolores A1 Martino, Rodrigo A1 Lopez-Corral, Lucia A1 Terol, Maria-Jose A1 Vazquez, Lourdes A1 Calabuig, Marisa A1 Sanz-Linares, Gabriela A1 Marin-Jimenez, Francisca A1 Alonso, Carmen A1 Montoro, Juan A1 Ferrer, Elena A1 Facal, Ana A1 Pascual, Maria-Jesus A1 Rodriguez-Fernandez, Alicia A1 Olave, María T A1 Cascales-Hernandez, Almudena A1 Gago, Beatriz A1 Hernandez-Rivas, Jose-Angel A1 Villalon, Lucia A1 Corona, Magdalena A1 Roldan-Perez, Alicia A1 Ribes-Amoros, Julia A1 Gonzalez-Santillana, Clara A1 Garcia-Sanz, Ramon A1 Navarro, David A1 Serrano-Lopez, Antonio J A1 Cedillo, Angel A1 Soria-Olivas, Emilio A1 Sureda, Anna A1 Solano, Carlos K1 Allogeneic stem cell transplantation K1 Autologous stem cell transplantation K1 Bayesian Networks K1 CAR-T therapy K1 COVID-19 K1 Chronic lymphocytic leukemia K1 Hematological malignancies K1 Immunocompromised patients K1 Moderna mRNA-1273 K1 Non-Hodgkin lymphoma K1 Pfizer-BioNTech BNT162b2 K1 Probabilistic graphical models K1 Respiratory virus K1 SARS-CoV-2 vaccines K1 mRNA vaccine AB Prior studies of antibody response after full SARS-CoV-2 vaccination in hematological patients have confirmed lower antibody levels compared to the general population. Serological response in hematological patients varies widely according to the disease type and its status, and the treatment given and its timing with respect to vaccination. Through probabilistic machine learning graphical models, we estimated the conditional probabilities of having detectable anti-SARS-CoV-2 antibodies at 3-6 weeks after SARS-CoV-2 vaccination in a large cohort of patients with several hematological diseases (n= 1166). Most patients received mRNA-based vaccines (97%), mainly Moderna® mRNA-1273 (74%) followed by Pfizer-BioNTech® BNT162b2 (23%). The overall antibody detection rate at 3 to 6 weeks after full vaccination for the entire cohort was 79%. Variables such as type of disease, timing of anti-CD20 monoclonal antibody therapy, age, corticosteroids therapy, vaccine type, disease status, or prior infection with SARS-CoV-2 are among the most relevant conditions influencing SARS-CoV-2-IgG-reactive antibody detection. A lower probability of having detectable antibodies was observed in patients with B-cell non-Hodgkin's lymphoma treated with anti-CD20 monoclonal antibodies within 6 months before vaccination (29.32%), whereas the highest probability was observed in younger patients with chronic myeloproliferative neoplasms (99.53%). The Moderna® mRNA-1273 compound provided higher probabilities of antibody detection in all scenarios. This study depicts conditional probabilities of having detectable antibodies in the whole cohort and in specific scenarios such as B cell NHL, CLL, MM, and cMPN that may impact humoral responses. These results could be useful to focus on additional preventive and/or monitoring interventions in these highly immunosuppressed hematological patients. PB Springer YR 2022 FD 2022-07-02 LK http://hdl.handle.net/10668/19697 UL http://hdl.handle.net/10668/19697 LA en NO Piñana JL, Rodríguez-Belenguer P, Caballero D, Martino R, Lopez-Corral L, Terol MJ, et al. Applicability of probabilistic graphical models for early detection of SARS-CoV-2 reactive antibodies after SARS-CoV-2 vaccination in hematological patients. Ann Hematol. 2022 Sep;101(9):2053-2067 DS RISalud RD Apr 9, 2025