{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T08:30:22Z","timestamp":1790497822322,"version":"4.1.0"},"reference-count":20,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2019,3,22]],"date-time":"2019-03-22T00:00:00Z","timestamp":1553212800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"name":"Menarini SA, Spain"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Respirology"],"published-print":{"date-parts":[[2019,8]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:sec><jats:title>Background and objective<\/jats:title><jats:p>The discovery of highly accurate pleural fluid (PF) biomarkers of malignancy remains elusive. We assessed the operating characteristics of the PF epithelial cell adhesion molecule (EpCAM), claudin 4 (CL4) and human epididymis protein 4 (HE4) as potential markers of epithelial malignancies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>The three markers were quantified by immunoassays in the supernatants (s) and cell lysates (cl) of 175 PF samples. The cut\u2010off values with 100% specificity were selected for malignant\u2013benign discrimination. An immunocytochemical staining index score for each marker was also evaluated on PF cell blocks. The resulting best biomarker was further validated in two independent populations of 73 and 48 patients with pleural effusions (PE).<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>An EpCAM(cl) &gt;98\u2009pg\/g total lysate protein yielded 75% sensitivity, 100% specificity, negative likelihood ratio of 0.25 and area under the curve of 0.94 for labelling adenocarcinomatous effusions. Sensitivity reached 88% if EpCAM(cl) was combined with EpCAM immunostaining. One\u2010third or more of the malignant effusions exhibiting a false\u2010negative cytological fluid examination were correctly classified by EpCAM(cl) concentrations. Immunoassays for CL4 and HE4 were diagnostically useless.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>EpCAM(cl) is a new biomarker of adenocarcinomatous PE with meaningful discriminating properties.<\/jats:p><\/jats:sec>","DOI":"10.1111\/resp.13539","type":"journal-article","created":{"date-parts":[[2019,3,23]],"date-time":"2019-03-23T01:50:03Z","timestamp":1553305803000},"page":"799-804","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Epithelial cell adhesion molecule (EpCAM) from pleural fluid cell lysates is a highly accurate diagnostic biomarker of adenocarcinomatous effusions"],"prefix":"10.1111","volume":"24","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2734-8061","authenticated-orcid":false,"given":"Jos\u00e9 M.","family":"Porcel","sequence":"first","affiliation":[{"name":"Pleural Medicine Unit, Department of Internal Medicine Arnau de Vilanova University Hospital  Lleida Spain"},{"name":"Research Group of Cancer Biomarkers IRBLleida  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Aureli","family":"Esquerda","sequence":"additional","affiliation":[{"name":"Research Group of Cancer Biomarkers IRBLleida  Lleida Spain"},{"name":"Department of Laboratory Medicine Arnau de Vilanova University Hospital  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia","family":"Bielsa","sequence":"additional","affiliation":[{"name":"Pleural Medicine Unit, Department of Internal Medicine Arnau de Vilanova University Hospital  Lleida Spain"},{"name":"Research Group of Cancer Biomarkers IRBLleida  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Novell","sequence":"additional","affiliation":[{"name":"Research Group of Cancer Biomarkers IRBLleida  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Maria Alba","family":"Sorolla","sequence":"additional","affiliation":[{"name":"Research Group of Cancer Biomarkers IRBLleida  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sonia","family":"Gatius","sequence":"additional","affiliation":[{"name":"Department of Pathology Arnau de Vilanova University Hospital  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carlos","family":"Zamora","sequence":"additional","affiliation":[{"name":"Department of Immunology Institut de Recerca, Hospital de la Santa Creu i Sant Pau  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Silvia","family":"Vidal","sequence":"additional","affiliation":[{"name":"Department of Immunology Institut de Recerca, Hospital de la Santa Creu i Sant Pau  Barcelona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonieta","family":"Salud","sequence":"additional","affiliation":[{"name":"Research Group of Cancer Biomarkers IRBLleida  Lleida Spain"},{"name":"Department of Medical Oncology Arnau de Vilanova University Hospital  Lleida Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2019,3,22]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.rce.2016.11.004"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1183\/13993003.01254-2018"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1177\/1753466618808660"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.5858\/arpa.2017-0124-RA"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1136\/thoraxjnl-2017-211321"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1200\/JCO.2017.76.6394"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1038\/modpathol.3800612"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1378\/chest.126.6.1757"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.arbres.2016.12.013"},{"key":"e_1_2_7_11_1","first-page":"1771","article-title":"Functions of EpCAM in physiological processes and diseases (Review)","volume":"42","author":"Huang L","year":"2018","journal-title":"Int. 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