{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T11:44:50Z","timestamp":1791546290968,"version":"4.3.4"},"reference-count":91,"publisher":"Oxford University Press (OUP)","issue":"10","license":[{"start":{"date-parts":[[2023,9,8]],"date-time":"2023-09-08T00:00:00Z","timestamp":1694131200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/academic.oup.com\/pages\/standard-publication-reuse-rights"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2023,10,3]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:sec>\n                  <jats:title>Background<\/jats:title>\n                  <jats:p>Autoimmune atrophic gastritis (AAG) is a persistent, corpus-restricted immune-mediated destruction of the gastric corpus oxyntic mucosa with reduced gastric acid and intrinsic factor secretion, leading to iron deficiency and pernicious anemia as a consequence of iron and cobalamin malabsorption. Positivity toward parietal cell (PCA) and intrinsic factor (IFA) autoantibodies is very common. AAG may remain asymptomatic for many years, thus making its diagnosis complex and often delayed. Due to the increased risk of gastric neoplasms, a timely diagnosis of AAG is clinically important.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Content<\/jats:title>\n                  <jats:p>The gold standard for AAG diagnosis is histopathological assessment of gastric biopsies obtained during gastroscopy, but noninvasive, preendoscopic serological screening may be useful in some clinical scenarios. Serum biomarkers for AAG may be divided into 2 groups: gastric autoimmunity-related biomarkers, such as PCA and IFA, and gastric corpus atrophy\/reduced gastric acid secretion-related biomarkers, such as serum gastrin and pepsinogens. The present review focuses on the clinical significance and pitfalls of serum biomarkers related to gastric autoimmunity and gastric corpus atrophy, including some discussion of analytical methods.<\/jats:p>\n               <\/jats:sec>\n               <jats:sec>\n                  <jats:title>Summary<\/jats:title>\n                  <jats:p>Serum assays for PCA, IFA, gastrin, and pepsinogen I show good diagnostic accuracy for noninvasive diagnostic work-up of AAG. Diagnostic performance may increase by combining &amp;gt;1 of these tests, overcoming the problem of seronegative AAG. However, appropriately designed, comparative studies with well-characterized patient cohorts are needed to better define the reliability of these biomarkers in the diagnosis of patients with AAG. Currently, positive serum tests should always be followed by the state-of-art diagnostic test, that is, histopathological assessment of gastric biopsies obtained during gastroscopy to definitively confirm or rule out AAG and eventually neoplastic complications.<\/jats:p>\n               <\/jats:sec>","DOI":"10.1093\/clinchem\/hvad082","type":"journal-article","created":{"date-parts":[[2023,9,8]],"date-time":"2023-09-08T07:50:36Z","timestamp":1694159436000},"page":"1114-1131","source":"Crossref","is-referenced-by-count":29,"title":["Update on Serum Biomarkers in Autoimmune Atrophic Gastritis"],"prefix":"10.1093","volume":"69","author":[{"given":"Ludovica","family":"Dottori","sequence":"first","affiliation":[{"name":"Department of Medical-Surgical Sciences and Translational Medicine, Sant\u2019Andrea Teaching Hospital, Sapienza University of Rome , Rome , Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Giulia","family":"Pivetta","sequence":"additional","affiliation":[{"name":"Department of Medical-Surgical Sciences and Translational Medicine, Sant\u2019Andrea Teaching Hospital, Sapienza University of Rome , Rome , Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Bruno","family":"Annibale","sequence":"additional","affiliation":[{"name":"Department of Medical-Surgical Sciences and Translational Medicine, Sant\u2019Andrea Teaching Hospital, Sapienza University of Rome , Rome , Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9503-8639","authenticated-orcid":false,"given":"Edith","family":"Lahner","sequence":"additional","affiliation":[{"name":"Department of Medical-Surgical Sciences and Translational Medicine, Sant\u2019Andrea Teaching Hospital, Sapienza University of Rome , Rome , Italy"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"286","published-online":{"date-parts":[[2023,9,8]]},"reference":[{"key":"2023100302111553600_hvad082-B1","doi-asserted-by":"crossref","first-page":"56","DOI":"10.1038\/s41572-020-0187-8","article-title":"Autoimmune gastritis","volume":"6","author":"Lenti","year":"2020","journal-title":"Nat Rev Dis Primers"},{"key":"2023100302111553600_hvad082-B2","doi-asserted-by":"crossref","first-page":"1672","DOI":"10.3390\/nu14081672","article-title":"Pernicious anemia: the hematological presentation of a multifaceted disorder caused by cobalamin deficiency","volume":"14","author":"Esposito","year":"2022","journal-title":"Nutrients"},{"key":"2023100302111553600_hvad082-B3","doi-asserted-by":"crossref","first-page":"1621","DOI":"10.1016\/j.dld.2019.09.016","article-title":"Chronic atrophic gastritis: natural history, diagnosis and therapeutic management. 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