About the Authors

José Ángel Hernández

Contributed equally to this work with: José Ángel Hernández, María Hernández-Sánchez

Affiliation Hematology Department, Hospital Universitario Infanta Leonor, Universidad Complutense de Madrid, Madrid, Spain

María Hernández-Sánchez

Contributed equally to this work with: José Ángel Hernández, María Hernández-Sánchez

Affiliation IBSAL, IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca,CSIC, Hospital Universitario de Salamanca, Spain

Ana Eugenia Rodríguez-Vicente

Affiliation IBSAL, IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca,CSIC, Hospital Universitario de Salamanca, Spain

Vera Grossmann

Affiliation MLL Munich, Germany

Rosa Collado

Affiliation Hematology Department, Hospital General, Valencia, Spain

Cecilia Heras

Affiliation Hematology Department, Hospital Universitario Infanta Leonor, Universidad Complutense de Madrid, Madrid, Spain

Anna Puiggros

Affiliation Pathology Department, Hospital del Mar, Barcelona, Spain

Ana África Martín

Affiliation Hematology Department, Hospital Universitario, Salamanca, Spain

Noemí Puig

Affiliation Hematology Department, Hospital Universitario, Salamanca, Spain

Rocío Benito

Affiliation IBSAL, IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca,CSIC, Hospital Universitario de Salamanca, Spain

Cristina Robledo

Affiliation IBSAL, IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca,CSIC, Hospital Universitario de Salamanca, Spain

Julio Delgado

Affiliation Hematology Department, Hospital Clinic i Provincial, Barcelona, Spain

Teresa González

Affiliation Fundación Pública Galega de Medicina Xenómica, Santiago de Compostela, Spain

José Antonio Queizán

Affiliation Hematology Department, Hospital General, Segovia, Spain

Josefina Galende

Affiliation Hematology Department, Hospital del Bierzo, Ponferrada, León, Spain

Ignacio de la Fuente

Affiliation Hematology Department, Hospital Universitario Río Hortega, Valladolid, Spain

Guillermo Martín-Núñez

Affiliation Hematology Department, Hospital Virgen del Puerto, Plasencia, Cáceres, Spain

José María Alonso

Affiliation Hematology Department, Hospital Río Carrión, Palencia, Spain

Pau Abrisqueta

Affiliation Hematology Department, Hospital Vall d'Hebron, Barcelona, Spain

Elisa Luño

Affiliation Hematology Department, Hospital Central de Asturias, Oviedo, Spain

Isabel Marugán

Affiliation Hematology Department, Hospital Clínico, Valencia, Spain

Isabel González-Gascón

Affiliation Hematology Department, Hospital Universitario Infanta Leonor, Universidad Complutense de Madrid, Madrid, Spain

Francesc Bosch

Affiliation Hematology Department, Hospital Vall d'Hebron, Barcelona, Spain

Alexander Kohlmann

Affiliations MLL Munich, Germany, AstraZeneca, Personalized Healthcare and Biomarkers, Innovative Medicines, Macclesfield, United Kingdom

Marcos González

Affiliations IBSAL, IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca,CSIC, Hospital Universitario de Salamanca, Spain, Hematology Department, Hospital Universitario, Salamanca, Spain

Blanca Espinet

Affiliation Pathology Department, Hospital del Mar, Barcelona, Spain

Jesús María Hernández-Rivas

jmhr@usal.es

Affiliations IBSAL, IBMCC, Centro de Investigación del Cáncer, Universidad de Salamanca,CSIC, Hospital Universitario de Salamanca, Spain, Hematology Department, Hospital Universitario, Salamanca, Spain, Department of Medicine, Universidad de Salamanca, Spain

Grupo Cooperativo Español de Citogenética Hematológica (GCECGH) and Grupo Español de Leucemia Linfática Crónica (GELLC)

Membership of the DataBase of CLL of Grupo Cooperativo Español de Citogenética Hematológica (GCECGH) and Grupo Español de Leucemia Linfocítica Crónica (GELLC) is provided in the Acknowledgments.

Competing Interests

The authors have declared that no competing interests exist. Oligonucleotide primer plates for amplicon deep-sequencing were provided by Roche Diagnostics, Penzberg, Germany, as part of the IRON-II study. VG and AK were employed by MLL Munich Leukemia Laboratory and AK is employed by AstraZeneca. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: JAH MHS AERV JMHR. Performed the experiments: MHS AERV CR RB. Analyzed the data: JAH MHS AERV CR RB. Contributed reagents/materials/analysis tools: VG AK RC CH AP AAM NP JD TG JAQ JG IF GMN JMA PA EL IM IG MG. Wrote the paper: JAH MHS AERV CR RB VG FB BE MG JMHR.