{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,11]],"date-time":"2026-04-11T12:49:58Z","timestamp":1775911798673,"version":"3.50.1"},"reference-count":57,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,3,25]],"date-time":"2026-03-25T00:00:00Z","timestamp":1774396800000},"content-version":"am","delay-in-days":1,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"\u2018la Caixa\u2019 Foundation","award":["LCF\/PR\/HR20\/52400021"],"award-info":[{"award-number":["LCF\/PR\/HR20\/52400021"]}]},{"DOI":"10.13039\/501100001674","name":"Leducq Foundation","doi-asserted-by":"publisher","award":["21CVD02"],"award-info":[{"award-number":["21CVD02"]}],"id":[{"id":"10.13039\/501100001674","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["2020.04836.BD"],"award-info":[{"award-number":["2020.04836.BD"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"name":"EU Horizon 2020","award":["101016072"],"award-info":[{"award-number":["101016072"]}]},{"DOI":"10.13039\/501100001866","name":"National Research Fund","doi-asserted-by":"publisher","award":["C14\/BM\/8225223"],"award-info":[{"award-number":["C14\/BM\/8225223"]}],"id":[{"id":"10.13039\/501100001866","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001866","name":"National Research Fund","doi-asserted-by":"publisher","award":["C17\/BM\/11613033"],"award-info":[{"award-number":["C17\/BM\/11613033"]}],"id":[{"id":"10.13039\/501100001866","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001866","name":"National Research Fund","doi-asserted-by":"publisher","award":["COVID-19\/2020-1\/14719577\/miRCOVID"],"award-info":[{"award-number":["COVID-19\/2020-1\/14719577\/miRCOVID"]}],"id":[{"id":"10.13039\/501100001866","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004562","name":"Ministry of Higher Education and Research","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004562","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Heart Foundation-Daniel Wagner of Luxembourg"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Aims<\/jats:title>\n                    <jats:p>Alternative splicing plays a critical role in cardiac development and function and becomes dysregulated in heart failure. Although splicing defects have been described in both dilated (DCM) and ischaemic (ICM) cardiomyopathy, the extent to which these alterations contribute to disease mechanisms and how they are spatially distributed across cardiac regions remains poorly understood. This study aimed to profile alternative splicing events across the left ventricle (LV), right ventricle (RV), and interventricular septum (IVS) in end-stage heart failure patients with DCM and ICM, and to investigate potential regulatory factors driving these changes.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and results<\/jats:title>\n                    <jats:p>RNA-seq was performed on LV tissue from patients with DCM (n = 10), ICM (n = 11), and non-failing controls (n = 5), and analysed using three complementary splicing tools to maximize event detection. This integrative approach consistently revealed widespread splicing alterations in heart failure samples compared to controls, with substantial overlap between DCM and ICM. Motif enrichment analysis implicated the RNA-binding protein QKI as a potential splicing regulator in heart failure. Validation of six selected splicing events by qRT\u2013PCR in a larger cohort (54 DCM, 45 ICM, 23 controls) confirmed shared dysregulation in DCM and ICM. While splicing alterations in CAMK2D and PDLIM3 were detected across the LV, RV, and IVS in both DCM and ICM, other transcripts (MYL6, ESRRG, EYA4, and SORBS1) differed between DCM and ICM, with DCM showing broader chamber-wide splicing alterations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>This study presents the first multi-chamber analysis of splicing in human heart failure, revealing a set of splicing events commonly dysregulated in DCM and ICM. These findings support the notion that splicing dysregulation can be a shared molecular response to advanced cardiac remodelling, rather than a driver of aetiology-specific pathology. We further uncovered distinct spatial patterns: in DCM, splicing alterations were consistently observed across all cardiac chambers, likely reflecting diffuse myocardial involvement. In contrast, certain splicing changes in ICM were restricted to the LV, consistent with the focal nature of ischaemic injury.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/cvr\/cvag068","type":"journal-article","created":{"date-parts":[[2026,3,23]],"date-time":"2026-03-23T12:23:18Z","timestamp":1774268598000},"source":"Crossref","is-referenced-by-count":1,"title":["Shared splicing dysregulation in heart failure associated with dilated and ischaemic cardiomyopathy and spatial specificity across cardiac regions"],"prefix":"10.1093","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3714-9653","authenticated-orcid":false,"given":"Marta","family":"Furtado","sequence":"first","affiliation":[{"name":"Gulbenkian Institute for Molecular Medicine , P\u00f3lo de Oeiras, Rua Quinta Grande, 6, 2780-156 Oeiras ,","place":["Portugal"]},{"name":"Faculdade de Medicina da Universidade de Lisboa , Avenida Professor Egas Moniz, 1649-028 Lisboa ,","place":["Portugal"]}]},{"given":"Pedro","family":"Barbosa","sequence":"additional","affiliation":[{"name":"Gulbenkian Institute for Molecular Medicine , P\u00f3lo de Oeiras, Rua Quinta Grande, 6, 2780-156 Oeiras ,","place":["Portugal"]}]},{"given":"Ana","family":"Wemans","sequence":"additional","affiliation":[{"name":"Gulbenkian Institute for Molecular Medicine , P\u00f3lo de Oeiras, Rua Quinta Grande, 6, 2780-156 Oeiras ,","place":["Portugal"]}]},{"given":"Lu","family":"Zhang","sequence":"additional","affiliation":[{"name":"Bioinformatics & AI Unit, Luxembourg Institute of Health , Strassen ,","place":["Luxembourg"]}]},{"given":"Andrew","family":"Lumley","sequence":"additional","affiliation":[{"name":"Cardiovascular Research Unit, Department of Precision Health, Luxembourg Institute of Health , Strassen ,","place":["Luxembourg"]}]},{"given":"Teresa","family":"Carvalho","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina da Universidade de Lisboa , Avenida Professor Egas Moniz, 1649-028 Lisboa ,","place":["Portugal"]}]},{"given":"Patr\u00edcia","family":"Napole\u00e3o","sequence":"additional","affiliation":[{"name":"Gulbenkian Institute for Molecular Medicine , P\u00f3lo de Oeiras, Rua Quinta Grande, 6, 2780-156 Oeiras ,","place":["Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4529-2687","authenticated-orcid":false,"given":"Przemyslaw","family":"Leszek","sequence":"additional","affiliation":[{"name":"The Heart Failure and Transplantology Department, Institute of Cardiology , Warsaw ,","place":["Poland"]}]},{"given":"Maria","family":"Carmo-Fonseca","sequence":"additional","affiliation":[{"name":"Gulbenkian Institute for Molecular Medicine , P\u00f3lo de Oeiras, Rua Quinta Grande, 6, 2780-156 Oeiras ,","place":["Portugal"]},{"name":"Faculdade de Medicina da Universidade de Lisboa , Avenida Professor Egas Moniz, 1649-028 Lisboa ,","place":["Portugal"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5321-8543","authenticated-orcid":false,"given":"Yvan","family":"Devaux","sequence":"additional","affiliation":[{"name":"Cardiovascular Research Unit, Department of Precision Health, Luxembourg Institute of Health , Strassen ,","place":["Luxembourg"]}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7733-4485","authenticated-orcid":false,"given":"Sandra","family":"Martins","sequence":"additional","affiliation":[{"name":"Faculdade de Medicina da Universidade de Lisboa , Avenida Professor Egas Moniz, 1649-028 Lisboa ,","place":["Portugal"]}]}],"member":"286","published-online":{"date-parts":[[2026,3,24]]},"reference":[{"key":"2026041107590201800_cvag068-B1","doi-asserted-by":"crossref","first-page":"717","DOI":"10.1038\/s41569-024-01046-6","article-title":"Global epidemiology of heart failure","volume":"21","author":"Khan","year":"2024","journal-title":"Nat Rev 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