{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T10:39:22Z","timestamp":1792665562733,"version":"4.5.0"},"reference-count":6,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T00:00:00Z","timestamp":1787270400000},"content-version":"vor","delay-in-days":20,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"},{"start":{"date-parts":[[2026,8,1]],"date-time":"2026-08-01T00:00:00Z","timestamp":1785542400000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["acrjournals.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["ACR Open Rheumatology"],"published-print":{"date-parts":[[2026,8]]},"abstract":"<jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Intravenous Ig (IVIG) is used in the management of a wide array of medical conditions. Passive transfer of hepatitis B core antibody (anti\u2010HBc) following IVIG administration is a well\u2010recognized, but often underappreciated phenomenon that can complicate the interpretation of hepatitis B serologies. Failure to recognize passive anti\u2010HBc transfer may lead to unnecessary diagnostic evaluation and interventions, as well as delays in needed immunosuppressive therapy.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Cases<\/jats:title>\n                    <jats:p>This report presents a case series describing three patients, from our institution, who developed positive anti\u2010HBc after IVIG administration. This passive antibody transfer created diagnostic uncertainty regarding prior hepatitis B virus (HBV) exposure. These cases demonstrate the challenges physicians face when distinguishing passive transfer of anti\u2010HBc from true previous HBV infection and highlight the potential consequences of misinterpretation of positive anti\u2010HBc testing in this clinical setting.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Recognition of passive anti\u2010HBc transfer after IVIG administration is important to avoid unnecessary diagnostic testing, antiviral therapy, and delays in starting immunosuppressive treatment. Physicians should consider the timing of IVIG administration when interpreting hepatitis B serologies. We propose obtaining baseline hepatitis B serologies before IVIG administration and we suggest building a best practice advisory into the electronic medical record that would serve as a reminder to providers ordering IVIG to obtain this baseline testing. Increased awareness of this phenomenon should improve accurate interpretation of positive anti\u2010HBc test results following IVIG and limit unnecessary interventions, delays in needed immunosuppressive therapies, and cost to both the patient and health care system.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/acr2.90123","type":"journal-article","created":{"date-parts":[[2026,8,22]],"date-time":"2026-08-22T06:10:03Z","timestamp":1787379003000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Passive Transfer of Hepatitis B Core Antibody Following Intravenous Ig Administration: Clinical Implications and Considerations"],"prefix":"10.1002","volume":"8","author":[{"given":"Mark","family":"McPherson","sequence":"first","affiliation":[{"name":"Kirk Kerkorian School of Medicine at the University of Nevada  Las Vegas Nevada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-7980-5002","authenticated-orcid":false,"given":"Alexandra","family":"Jianu","sequence":"additional","affiliation":[{"name":"Kirk Kerkorian School of Medicine at the University of Nevada  Las Vegas Nevada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Winn","family":"Chatham","sequence":"additional","affiliation":[{"name":"Kirk Kerkorian School of Medicine at the University of Nevada  Las Vegas Nevada"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,8,21]]},"reference":[{"key":"e_1_2_3_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2352-3026(18)30152-2"},{"key":"e_1_2_3_3_1","doi-asserted-by":"publisher","DOI":"10.1053\/j.gastro.2024.11.008"},{"key":"e_1_2_3_4_1","doi-asserted-by":"publisher","DOI":"10.1200\/JCO.20.01757"},{"key":"e_1_2_3_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/hep.29800"},{"key":"e_1_2_3_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/trf.17938"},{"key":"e_1_2_3_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/tid.13074"}],"container-title":["ACR Open Rheumatology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/acrjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/acr2.90123","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/acrjournals.onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/acr2.90123","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/acrjournals.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/acr2.90123","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,10,22]],"date-time":"2026-10-22T09:56:23Z","timestamp":1792662983000},"score":1,"resource":{"primary":{"URL":"https:\/\/acrjournals.onlinelibrary.wiley.com\/doi\/10.1002\/acr2.90123"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,8]]},"references-count":6,"journal-issue":{"issue":"8","published-print":{"date-parts":[[2026,8]]}},"alternative-id":["10.1002\/acr2.90123"],"URL":"https:\/\/doi.org\/10.1002\/acr2.90123","archive":["Portico"],"relation":{},"ISSN":["2578-5745","2578-5745"],"issn-type":[{"value":"2578-5745","type":"print"},{"value":"2578-5745","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,8]]},"assertion":[{"value":"2026-07-14","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-07-15","order":2,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2026-08-21","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}],"article-number":"e90123"}}