{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,17]],"date-time":"2026-07-17T14:13:16Z","timestamp":1784297596056,"version":"3.55.0"},"reference-count":45,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,7,23]],"date-time":"2024-07-23T00:00:00Z","timestamp":1721692800000},"content-version":"vor","delay-in-days":204,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","award":["23KK0157"],"award-info":[{"award-number":["23KK0157"]}],"id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Reprod Medicine &amp; Biology"],"published-print":{"date-parts":[[2024,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>Non\u2010previa placenta accreta spectrum (PAS) is associated with assisted reproductive technology (ART), particularly frozen embryo transfer during hormone replacement therapy (HRC\u2010FET). We especially aimed to evaluate the prevalence and risk factors for non\u2010previa PAS in HRC\u2010FET pregnancies.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Overall, 279 women who conceived through ART at three ART facilities and delivered at a single center were included in this retrospective study. Data regarding endometrial thickness at embryo transfer, previous histories, and type of embryo transfer\u2014HRC\u2010FET, frozen embryo transfer during a natural ovulatory cycle (NC\u2010FET), and fresh embryo transfer (Fresh\u2010ET)\u2014were collected. Univariable logistic regression analyses were conducted.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The prevalence of non\u2010previa PAS was 27\/192 (14.1%) in the HRC\u2010FET group and 0 (0.0%) in both the NC\u2010FET and Fresh\u2010ET groups. Significantly high odds ratio [95% confidence interval] of non\u2010previa PAS was associated with a history of artificial abortion (6.45 [1.98\u201321.02]), endometrial thickness\u2009&lt;8.0\u2009mm (6.11 [1.06\u201335.12]), resolved low\u2010lying placenta (5.73 [2.13\u201315.41]), multiparity (2.90 [1.26\u20136.69]), polycystic ovarian syndrome (2.62 [1.02\u20136.71]), and subchorionic hematoma (2.49 [1.03\u20136.04]).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>A history of artificial abortion, endometrial thickness\u2009&lt;8.0\u2009mm, and resolved low\u2010lying placenta may help in antenatal detection of a high\u2010risk population of non\u2010previa PAS in HRC\u2010FET pregnancies.<\/jats:p><\/jats:sec>","DOI":"10.1002\/rmb2.12592","type":"journal-article","created":{"date-parts":[[2024,7,24]],"date-time":"2024-07-24T04:45:20Z","timestamp":1721796320000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Risk factors for non\u2010previa placenta accreta spectrum in pregnancies conceived through frozen embryo transfer during a hormone replacement cycle in Japan"],"prefix":"10.1002","volume":"23","author":[{"given":"Seiko","family":"Matsuo","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology Nagoya University Graduate School of Medicine  Nagoya Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3082-6116","authenticated-orcid":false,"given":"Tomomi","family":"Kotani","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Nagoya University Graduate School of Medicine  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