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Foundation"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Bladder Cancer"],"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:p>\n                    <jats:bold>Background:<\/jats:bold>\n                    The presence of cancer in pelvic lymph nodes removed during radical surgery for muscle-invasive bladder cancer (MIBC) is a key determinant of patient outcome. It would be beneficial to predict node status preoperatively to tailor the use of neoadjuvant chemotherapy and extent of lymph node dissection. Of 12 published node status predictors based on tumor RNA expression signatures, none have been successfully validated in subsequent reports.\n                    <jats:bold>Objective:<\/jats:bold>\n                    We aimed to validate all published node status predictors and evaluate new prediction models in MIBC.\n                    <jats:bold>Methods:<\/jats:bold>\n                    Gene expression data and node status from two MIBC cohorts were used to test 12 published node-predictive signatures. The overlap in differential expression was examined across the two datasets, and new prediction models were tested in cross-validation and by application to the independent cohort.\n                    <jats:bold>Results:<\/jats:bold>\n                    Published node status predictors performed either no better, or only slightly better than chance in the two independent validation datasets (maximum AUC 0.59 and 0.65, and maximum balanced accuracy 0.54 and 0.57). Among very few genes and signatures differentially expressed in the same direction in both data sets we identified upregulation of interferon-response signatures in node negative cases. Transcriptomic predictors trained in one dataset performed poorly when applied to the independent dataset (AUC 0.60\u20130.62).\n                    <jats:bold>Conclusions:<\/jats:bold>\n                    In this systematic evaluation, neither the 12 published signatures nor our own models reached an adequate performance for clinical node status prediction in independent data. This indicates that the biological determinants of nodal spread are poorly captured by bulk tumor RNA expression profiles.\n                  <\/jats:p>","DOI":"10.1177\/23523735251370895","type":"journal-article","created":{"date-parts":[[2025,8,21]],"date-time":"2025-08-21T07:04:08Z","timestamp":1755759848000},"source":"Crossref","is-referenced-by-count":0,"title":["Evaluation of gene expression-based predictors of lymph node metastasis in bladder cancer"],"prefix":"10.1177","volume":"11","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-7699-5126","authenticated-orcid":false,"given":"Hafd\u00eds Birta","family":"Johansson","sequence":"first","affiliation":[{"name":"Department of Translational Medicine, Lund University, Malm\u00f6, \rSweden"},{"name":"Department of Urology, Sk\u00e5ne University Hospital, Malm\u00f6, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fredrik","family":"Liedberg","sequence":"additional","affiliation":[{"name":"Department of Translational Medicine, Lund University, Malm\u00f6, \rSweden"},{"name":"Department of Urology, Sk\u00e5ne University Hospital, Malm\u00f6, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1667-6510","authenticated-orcid":false,"given":"Carina","family":"Bernardo","sequence":"additional","affiliation":[{"name":"Division of Oncology, Department of Clinical Sciences, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Aymeric","family":"Zadoroznyj","sequence":"additional","affiliation":[{"name":"Department of Translational Medicine, Lund University, Malm\u00f6, \rSweden"},{"name":"Department of Urology, Sk\u00e5ne University Hospital, Malm\u00f6, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6318-7912","authenticated-orcid":false,"given":"Carl-Adam","family":"Mattsson","sequence":"additional","affiliation":[{"name":"Division of Oncology, Department of Clinical Sciences, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mattias","family":"H\u00f6glund","sequence":"additional","affiliation":[{"name":"Division of Oncology, Department of Clinical Sciences, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3317-865X","authenticated-orcid":false,"given":"Pontus","family":"Eriksson","sequence":"additional","affiliation":[{"name":"Division of Oncology, Department of Clinical Sciences, Lund University, Lund, Sweden"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7869-0473","authenticated-orcid":false,"given":"Gottfrid","family":"Sj\u00f6dahl","sequence":"additional","affiliation":[{"name":"Department of Translational Medicine, Lund University, Malm\u00f6, \rSweden"},{"name":"Department of Urology, Sk\u00e5ne University Hospital, Malm\u00f6, 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