{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T14:45:28Z","timestamp":1786977928644,"version":"build-2736575974"},"reference-count":50,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2021,12,18]],"date-time":"2021-12-18T00:00:00Z","timestamp":1639785600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"publisher","award":["1160\/1\u20102"],"award-info":[{"award-number":["1160\/1\u20102"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl Journal of Cancer"],"published-print":{"date-parts":[[2022,3,15]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    Alpha fetoprotein (AFP) is the most widely used diagnostic and prognostic serum biomarker for hepatocellular carcinoma (HCC). Despite its wide clinical use, a systematic clinicopathologic study comparing AFP expression in HCC in situ with serum AFP concentrations has not yet been conducted. To analyze AFP expression in a large cohort of patients by immunohistochemistry, we employed a comprehensive tissue microarray with 871 different HCCs of overall 561 patients. AFP immunoreactivity was detected in only about 20% of HCC core biopsies, whereas 48.9% of the patients displayed increased serum values (&gt;12\u2009ng\/mL). Immunostaining of whole tumor slides revealed that lack of detectable immunoreactivity in core biopsies in a subgroup of patients with elevated AFP serum concentrations is due to heterogeneous intratumoral AFP expression. Serum AFP concentrations and AFP expression in situ were moderately correlated (Spearman's rank correlation coefficient .53,\n                    <jats:italic>P<\/jats:italic>\n                    \u00a0=\u00a01.2e\u2009\u2212\u200913). High AFP expression detected in serum (&gt;227.3\u00a0ng\/mL) or in situ predicted unfavorable prognosis and was associated with vascular invasion, higher tumor grade and macrotrabecular\u2010massive tumor subtype. Multivariate and ROC curve analysis demonstrated that high AFP concentrations in serum is an independent prognostic parameter and represents the more robust prognostic predictor in comparison to AFP immunostaining of core biopsies. The previously published vessels encapsulating tumor clusters (VETC) pattern turned out as an additional, statistically independent prognostic parameter. AFP\u2010positivity was associated with increased tumor cell apoptosis, but not with increased vascular densities. Additionally, AFP\u2010positive tumors displayed increased proliferation rates, urea cycle dysregulation and signs of genomic instability, which may constitute the basis for their increased aggressiveness.\n                  <\/jats:p>","DOI":"10.1002\/ijc.33898","type":"journal-article","created":{"date-parts":[[2021,12,11]],"date-time":"2021-12-11T13:40:35Z","timestamp":1639230035000},"page":"1053-1066","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":36,"title":["Comprehensive clinicopathologic study of alpha fetoprotein\u2010expression in a large cohort of patients with hepatocellular carcinoma"],"prefix":"10.1002","volume":"150","author":[{"given":"Dirk Andreas","family":"Ridder","sequence":"first","affiliation":[{"name":"Institute of Pathology University Medical Center of the Johannes Gutenberg University  Mainz 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