RT Journal Article T1 Validation and functional characterization of GWAS-identified variants for chronic lymphocytic leukemia: a CRuCIAL study. A1 Garcia-Martin, Paloma A1 Diez, Ana Moñiz A1 Maldonado, Jose Manuel Sanchez A1 Serrano, Antonio Jose Cabrera A1 Ter Horst, Rob A1 Benavente, Yolanda A1 Landi, Stefano A1 Macauda, Angelica A1 Clay-Gilmour, Alyssa A1 Hernandez-Mohedo, Francisca A1 Niazi, Yasmeen A1 Gonzalez-Sierra, Pedro A1 Espinet, Blanca A1 Rodriguez-Sevilla, Juan Jose A1 Maffei, Rossana A1 Blanco, Gonzalo A1 Giaccherini, Matteo A1 Puiggros, Anna A1 Cerhan, James A1 Marasca, Roberto A1 Cañadas-Garre, Marisa A1 Lopez-Nevot, Miguel Angel A1 Chen-Liang, Tzu A1 Thomsen, Hauke A1 Gamez, Irene A1 Moreno, Víctor A1 Marcos-Gragera, Rafael A1 Garcia-Alvarez, Maria A1 Llorca, Javier A1 Jerez, Andres A1 Berndt, Sonja A1 Butrym, Aleksandra A1 Norman, Aaron D A1 Casabonne, Delphine A1 Luppi, Mario A1 Slager, Susan L A1 Hemminki, Kari A1 Li, Yang A1 Alcoceba, Miguel A1 Campa, Daniele A1 Canzian, Federico A1 de Sanjose, Silvia A1 Försti, Asta A1 Netea, Mihai G A1 Jurado, Manuel A1 Sainz, Juan K1 Genetic Predisposition to Disease K1 Genome-Wide Association Study K1 Humans K1 Leukemia, Lymphocytic, Chronic, B-Cell K1 Polymorphism, Single Nucleotide AB During the past years, considerable efforts have been made to uncover the genetic component of chronic lymphocytic leukemia (CLL) susceptibility. To date, several genome-wide association studies (GWAS) and their meta- analysis have identified not only single-nucleotide polymorphisms (SNPs) associated with CLL risk [1] but also patient survival [2]. However, despite these noticeable results, it becomes evident that both validation and functional characterization of the genetic variations identified are still required before they can be used in a clinical setting. Hence, we decided to validate the association of 41 GWAS-identified hits for CLL in 1158 CLL cases and 1947 controls ascertained through the Consortium for Research in Chronic lymphocytIc Leukemia (CRuCIAL) and to investigate their impact on modulating host immune responses and their utility to predict disease onset. Study participants were of European ancestry and gave their written informed consent to participate in the study, which was approved by the ethical review committee of participant institutions. CLL patients had often Binet stage A and Rai stage I (67.00% and 79.83%) and, compared to controls, had a higher mean age (66.19 ± 12.66 vs. 55.60 ± 11.50) and an increased male/female ratio (1.54 vs. 0.91). SNPs selection was based on published GWAS, functionality according to HaploReg data, and linkage disequilibrium between the SNPs. Genotyping of genetic variants was performed using KASPTM and Taqman® assays. Hardy–Weinberg equilibrium was assessed in the controls (P > 0.001) and the association between CLL and SNPs was tested using a multivariate unconditional logistic regression analysis adjusted for age, sex, and country of origin. A meta-analysis of the CRuCIAL results with those from previous GWAS was conducted to validate genetic associations and the I [2] statistic was used to assess statistical heterogeneity between the studies (PHet > 0.01). PB Nature Publishing Group YR 2022 FD 2022-05-04 LK http://hdl.handle.net/10668/19517 UL http://hdl.handle.net/10668/19517 LA en NO García-Martín P, Díez AM, Maldonado JMS, Serrano AJC, Ter Horst R, Benavente Y, et al. Validation and functional characterization of GWAS-identified variants for chronic lymphocytic leukemia: a CRuCIAL study. Blood Cancer J. 2022 May 17;12(5):79. DS RISalud RD Apr 11, 2025