Assisted reproductive technology in Japan: a summary report for 2015 by The Ethics Committee of The Japan Society of Obstetrics and Gynecology

Hidekazu Saito, Seung Chik Jwa, Akira Kuwahara, Kazuki Saito, Tomonori Ishikawa, Osamu Ishihara, Koji Kugu, Rintaro Sawa, Kouji Banno, Minoru Irahara

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Purpose: The Japan Society of Obstetrics and Gynecology (JSOG) implemented an assisted reproductive technology (ART) registry system in 1986. Here are reported the characteristics and treatment outcomes of ART cycles that were registered in 2015. Methods: JSOG has requested all participating ART facilities to register cycle-specific information for all ART cycles since 2007. A descriptive analysis was performed by using the registry database for 2015. Results: In total, 424 151 cycles and 51 001 neonates (1 in 19.7 neonates born in Japan) were registered in 2015. The patients’ mean age was 38.2 years (standard deviation = 4.5). Among the fresh cycles, 94 158 of 244 718 (38.5%) egg retrieval cycles were cycles with freeze-all embryos or oocytes, while fresh embryo transfer (ET) was performed in 70 254 cycles, signaling a decrease from 2014. There were 169 898 frozen-thawed ET cycles, resulting in 56 355 pregnancies and 40 599 neonates. Single ET was performed at a rate of 79.7% for fresh and 81.8% for frozen cycles and the singleton pregnancy/live birth rates were 96.9%/96.5% and 96.8%/96.4% for the respective cycles. Conclusion: The total ART cycles and live births resulting from ART has been increasing in Japan. Single ET was performed at a rate of almost 80% and ET cycles have shifted from fresh to frozen cycles.

Original languageEnglish
Pages (from-to)20-28
Number of pages9
JournalReproductive Medicine and Biology
Issue number1
Publication statusPublished - 2018 Jan 1



  • assisted reproductive technology
  • in vitro fertilization
  • intracytoplasmic sperm injection
  • single embryo transfer
  • The Japan Society of Obstetrics and Gynecology

ASJC Scopus subject areas

  • Reproductive Medicine
  • Cell Biology

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