{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,13]],"date-time":"2026-05-13T14:50:05Z","timestamp":1778683805875,"version":"3.51.4"},"reference-count":15,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2019,11,21]],"date-time":"2019-11-21T00:00:00Z","timestamp":1574294400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Reprod Medicine &amp; Biology"],"published-print":{"date-parts":[[2020,1]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Purpose<\/jats:title><jats:p>The Japan Society of Obstetrics and Gynecology (JSOG) has collected cycle\u2010based assisted reproductive technology (ART) data in an online registry since 2007. Herein, we present the characteristics and treatment outcomes of ART cycles registered during 2017.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>We collected cycle\u2010specific information for all ART cycles implemented at participating facilities and performed descriptive analysis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>In total, 448,210 treatment cycles and 56,617 neonates (1 in 16.7 neonates born in Japan) were reported in 2017, increased from 2016; the number of initiated fresh cycles decreased for the first time ever. The mean patient age was 38.0\u00a0years (standard deviation 4.6). A total 110,641 of 245,205 egg retrieval cycles (45.1%) were freeze\u2010all cycles; fresh embryo transfer (ET) was performed in 55,720 cycles. A total 194,415 frozen\u2010thawed ET cycles were reported, resulting in 66,881 pregnancies and 47,807 neonates born. Single ET (SET) was performed in 81.8% of fresh transfers and 83.4% of frozen cycles, with singleton pregnancy\/live birth rates of 97.5%\/97.3% and 96.7%\/96.6%, respectively.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Total ART cycles and subsequent live births increased continuously in 2017, whereas the number of initiated fresh cycles decreased. SET was performed in over 80% of cases, and ET shifted from using fresh embryos to frozen ones.<\/jats:p><\/jats:sec>","DOI":"10.1002\/rmb2.12307","type":"journal-article","created":{"date-parts":[[2019,11,21]],"date-time":"2019-11-21T12:59:54Z","timestamp":1574341194000},"page":"3-12","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":51,"title":["Assisted reproductive technology in Japan: A summary report for 2017 by the Ethics Committee of the Japan Society of Obstetrics and Gynecology"],"prefix":"10.1002","volume":"19","author":[{"given":"Osamu","family":"Ishihara","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology Saitama Medical University Saitama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8815-5714","authenticated-orcid":false,"given":"Seung Chik","family":"Jwa","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Saitama Medical University Saitama Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Akira","family":"Kuwahara","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Graduate School of Biomedical Sciences Tokushima University Tokushima Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0052-896X","authenticated-orcid":false,"given":"Yukiko","family":"Katagiri","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine Toho University Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Yoshimitsu","family":"Kuwabara","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Nippon Medical School Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Toshio","family":"Hamatani","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology School of Medicine Keio University Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Miyuki","family":"Harada","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology Faculty of Medicine The University of Tokyo Tokyo Japan"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tomohiko","family":"Ichikawa","sequence":"additional","affiliation":[{"name":"Department of Urology Graduate School of Medicine Chiba University Chiba 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