Saito, Hidekazu National Center for Child Health and Development
Jwa, Seung Chik Saitama Medical University|Sora no Mori Clinic
Saito, Kazuki Tokyo Medical and Dental University
Ishikawa, Tomonori Tokyo Medical and Dental University
Ishihara, Osamu Saitama Medical University
Kugu, Koji Tokyo Metropolitan Bokutoh Hospital
Sawa, Rintaro Nippon Medical School|Japan Medical Association Research Institute
Banno, Kouji Keio University
assisted reproductive technology
in vitro fertilization
intracytoplasmic sperm injection
single embryo transfer
The Japan Society of Obstetrics and Gynecology
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.
Reproductive Medicine and Biology
Japan Society for Reproductive Medicine|John Wiley & Sons Australia, Ltd
© 2017 The Authors. Reproductive Medicine and Biology published by John Wiley & Sons Australia, Ltd on behalf of Japan Society for Reproductive Medicine. This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License (https://creativecommons.org/licenses/by-nc/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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