@article{10902/35965, year = {2024}, url = {https://hdl.handle.net/10902/35965}, abstract = {The pandemic caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2, COVID-19) had an estimated overall case fatality ratio of 1.38% (pre-vaccination), being 53% higher in males and increasing exponentially with age. Among 9578 individuals diagnosed with COVID-19 in the SCOURGE study, we found 133 cases (1.42%) with detectable clonal mosaicism for chromosome alterations (mCA) and 226 males (5.08%) with acquired loss of chromosome Y (LOY). Individuals with clonal mosaic events (mCA and/or LOY) showed a 54% increase in the risk of COVID-19 lethality. LOY is associated with transcriptomic biomarkers of immune dysfunction, pro-coagulation activity and cardiovascular risk. Interferon-induced genes involved in the initial immune response to SARS-CoV-2 are also down-regulated in LOY. Thus, mCA and LOY underlie at least part of the sex-biased severity and mortality of COVID-19 in aging patients. Given its potential therapeutic and prognostic relevance, evaluation of clonal mosaicism should be implemented as biomarker of COVID-19 severity in elderly people.}, organization = {Acknowledgements: We thank Gemma Moncunill, Lluís Armengol and Jozef Gecz for their critical reading of initial versions of this manuscript. The authors acknowledge support from the Catalan Department of Economy and Knowledge (SGR2017/1974, SGR2017/801), the Spanish Ministry of Science “Programa de Excelencia María de Maeztu” (MDM-2014-0370) and “Centro de Excelencia Severo Ochoa” (CEX2018-000806-S), the Fondo Europeo de Desarrollo Regional, UE (RTI2018-100789-B-I00) and the Estonian Research Council (PUT1660). The SCOURGE study has been funded by Instituto de Salud Carlos III (COV20_00622) and ofounded by European Union (ERDF) “A way of making Europe”; additional funding was received from Amancio Ortega Foundation and Banco de Santander. Authors also receive support from the Generalitat de Catalunya through the CERCA Program}, publisher = {Nature}, publisher = {Communications Biology, 2024, 7(1), 202}, title = {Clonal chromosomal mosaicism and loss of chromosome Y in elderly men increase vulnerability for SARS-CoV-2}, author = {Pérez Jurado, Luis Ángel and Cáceres, Alejandro and Balagué Dobón, Laura and Esko, Tonu and López de Heredia, Miguel and Quintela, Inés and Cruz, Raquel and Lapunzina, Pablo and Carracedo, Ángel and García Ibarbia, María del Carmen and Riancho Moral, José Antonio and Fariñas Álvarez, María del Carmen and González, Juan R.}, }