RT Journal Article T1 Genome-Wide Association Study of White Blood Cell Counts in Patients With Ischemic Stroke. A1 Torres-Aguila, Nuria P A1 Carrera, Caty A1 Giese, Anne-Katrine A1 Cullell, Natalia A1 Muiño, Elena A1 Carcel-Marquez, Jara A1 Gallego-Fabrega, Cristina A1 Gonzalez-Sanchez, Jonathan A1 Del-Mar-Freijo, Maria A1 Alvarez-Sabin, Jose A1 Molina, Carlos A1 Ribo, Marc A1 Jimenez-Conde, Jordi A1 Roquer, Jaume A1 Sobrino, Tomas A1 Campos, Francisco A1 Castillo, Jose A1 Muñoz-Narbona, Lucia A1 Lopez-Cancio, Elena A1 Davalos, Antoni A1 Diaz-Navarro, Rosa A1 Tur, Silvia A1 Vives-Bauza, Cristofol A1 Serrano-Heras, Gemma A1 Segura, Tomas A1 Krupinski, Jerzy A1 Delgado-Mederos, Raquel A1 Marti-Fabregas, Joan A1 Heitsch, Laura A1 Ibañez, Laura A1 Cruchaga, Carlos A1 Rost, Natalia S A1 Montaner, Joan A1 Lee, Jin-Moo A1 Fernandez-Cadenas, Israel K1 genome-wide association study K1 humans K1 leukocytes K1 risk factors K1 stroke AB Background and Purpose- Immune cells play a key role in the first 24h poststroke (acute phase), being associated with stroke outcome. We aimed to find genetic risk factors associated with leukocyte counts during the acute phase of stroke . Methods - Ischemic stroke patients with leukocyte counts data during the first 24h were included. Genome-wide association study and gene expression studies were performed. Results- Our genome-wide association study , which included 2064 (Discovery) and 407 (Replication) patients , revealed a new locus (14q24.3) associated with leukocyte counts . After Joint analysis (n=2471) 5 more polymorphisms reached genome -wide significance (P<5×10-8). The 14q24.3 locus was associated with acute stroke outcome (rs112809786, P=0.036) and with ACOT1 and PTGR2 gene expression . Previous polymorphisms associated with leukocyte counts in general- population did not show any significance in our study. Conclusions- We have found the first locus associated with leukocyte counts in ischemic stroke , also associated with acute outcome. Genetic analysis of acute endophenotypes could be useful to find the genetic factors associated with stroke outcome. Our findings suggested a different modulation of immune cells in stroke compared with healthy conditions. PB Lippincott Williams & Wilkins YR 2019 FD 2019-10-07 LK http://hdl.handle.net/10668/14589 UL http://hdl.handle.net/10668/14589 LA en NO Torres-Aguila NP, Carrera C, Giese AK, Cullell N, Muiño E, Cárcel-Márquez J, et al. Genome-Wide Association Study of White Blood Cell Counts in Patients With Ischemic Stroke. Stroke. 2019 Dec;50(12):3618-3621. DS RISalud RD Aug 5, 2025