RT Journal Article T1 Assisted reproductive technology in Europe, 2012: results generated from European registers by ESHREaEuro A1 Calhaz-Jorge, C. A1 de Geyter, C. A1 Kupka, M. S. A1 de Mouzon, J. A1 Erb, K. A1 Mocanu, E. A1 Motrenko, T. A1 Scaravelli, G. A1 Wyns, C. A1 Goossens, V. A1 Gliozheni, Orion A1 Strohmer, Heinz A1 Petrovskaya, Elena A1 Tishkevich, Oleg A1 Wyns, Christine A1 Bogaerts, Kris A1 Antonova, Irena A1 Vrcic, Hrvoje A1 Ljiljak, Dejan A1 Rezabek, Karel A1 Markova, Jitka A1 Lemmen, Josephine A1 Erb, Karin A1 Soritsa, Deniss A1 Gissler, Mika A1 Tiitinen, Aila A1 Royere, Dominique A1 Tandler-Schneider, Andreas A1 Uszkoriet, Monika A1 Loutradis, Dimitris A1 Tarlatzis, Basil C. A1 Urbancsek, Janos A1 Kosztolanyi, G. A1 Bjorgvinsson, Hilmar A1 Mocanu, Edgar A1 Scaravelli, Giulia A1 Lokshin, Vyacheslav A1 Ravil, Valiyev A1 Gudleviciene, Zivile A1 Lopes, Giedre Belo A1 Moshin, Veaceslav A1 Simic, Tatjana Motrenko A1 Vukicevic, Dragana A1 Romundstad, Liv Bente A1 Kurzawa, Rafael A1 Calhaz-Jorge, Carlos A1 Laranjeira, Ana Rita A1 Rugescu, Ioana A1 Doroftei, Bogdan A1 Korsak, Vladislav A1 Radunovic, Nebosja A1 Tabs, Nada A1 Tomazevic, Tomaz A1 Virant-Klun, Irma A1 Hernandez Hernandez, Juana A1 Castilla Alcala, Jose Antonio A1 Bergh, Christina A1 Weder, Maya A1 De Geyter, Christian A1 Smeenk, Jesper M. J. A1 Gryshchenko, Mykola A1 Baranowski, Richard K1 IVF K1 ICSI K1 intrauterine insemination K1 egg donation K1 frozen embryo replacement K1 Europe K1 data collection K1 registry K1 Sperm injection K1 Trends AB The 16th European IVF-monitoring (EIM) report presents the data of the treatments involving assisted reproductive technology (ART) and intrauterine insemination (IUI) initiated in Europe during 2012: are there any changes compared with previous years?Despite some fluctuations in the number of countries reporting data, the overall number of ART cycles has continued to increase year by year, the pregnancy rates (PRs) in 2012 remained stable compared with those reported in 2011, and the number of transfers with multiple embryos (3+) and the multiple delivery rates were lower than ever before.Since 1997, ART data in Europe have been collected and re-ported in 15 manuscripts, published in Human Reproduction.Retrospective data collection of European ART data by the EIM Consortium for the European Society of Human Reproduction and Embryology (ESHRE). Data for cycles between 1 January and 31 December 2012 were collected from National Registers, when existing, or on a voluntary basis by personal information.From 34 countries (+1 compared with 2011), 1111 clinics reported 640 144 treatment cycles including 139 978 of IVF, 312 600 of ICSI, 139 558 of frozen embryo replacement (FER), 33 605 of egg donation (ED), 421 of in vitro maturation, 8433 of preimplantation genetic diagnosis/preimplantation genetic screening and 5549 of frozen oocyte replacements (FOR). European data on intrauterine insemination using husband/partner's semen (IUI-H) and donor semen (IUI-D) were reported from 1126 IUI labs in 24 countries. A total of 175 028 IUI-H and 43 497 IUI-D cycles were included.In 18 countries where all clinics reported to their ART register, a total of 369 081 ART cycles were performed in a population of around 295 million inhabitants, corresponding to 1252 cycles per million inhabitants (range 325-2732 cycles per million inhabitants). For all IVF cycles, the clinical PRs per aspiration and per transfer were stable with 29.4 (29.1% in 2011) and 33.8% (33.2% in 2011), respectively. For ICSI, the corresponding rates also were stable with 27.8 (27.9% in 2011) and 32.3% (31.8% in 2011). In FER cycles, the PR per thawing/warming increased to 23.1% (21.3% in 2011). In ED cycles, the PR per fresh transfer increased to 48.4% (45.8% in 2011) and to 35.9% (33.6% in 2011) per thawed transfer, while it was 45.1% for transfers after FOR. The delivery rate after IUI remained stable, at 8.5% (8.3% in 2011) after IUI-H and 12.0% (12.2% in 2011) after IUI-D. In IVF and ICSI cycles, 1, 2, 3 and 4+ embryos were transferred in 30.2, 55.4, 13.3 and 1.1% of the cycles, respectively. The proportions of singleton, twin and triplet deliveries after IVF and ICSI (added together) were 82.1, 17.3 and 0.6%, respectively, resulting in a total multiple delivery rate of 17.9% compared with 19.2% in 2011 and 20.6% in 2010. In FER cycles, the multiple delivery rate was 12.5% (12.2% twins and 0.3% triplets). Twin and triplet delivery rates associated with IUI cycles were 9.0%/0.4% and 7.2%/0.5%, following treatment with husband and donor semen, respectively.The method of reporting varies among countries, and registers from a number of countries have been unable to provide some of the relevant data such as initiated cycles and deliveries. As long as data are incomplete and generated through different methods of collection, results should be interpreted with caution.The 16th ESHRE report on ART shows a continuing expansion of the number of treatment cycles in Europe, with more than 640 000 cycles reported in 2012 with an increasing contribution to birthrate in many countries. However, the need to improve and standardize the national registries, and to establish validation methodologies remains manifest.The study has no external funding; all costs are covered by ESHRE. There are no competing interests. PB Oxford univ press SN 0268-1161 YR 2016 FD 2016-08-01 LK http://hdl.handle.net/10668/18954 UL http://hdl.handle.net/10668/18954 LA en NO European IVF-Monitoring Consortium (EIM) for the European Society of Human Reproduction and Embryology (ESHRE); Calhaz-Jorge C, de Geyter C, Kupka MS, de Mouzon J, Erb K, et al. Assisted reproductive technology in Europe, 2012: results generated from European registers by ESHRE. Hum Reprod. 2016 Aug;31(8):1638-52. DS RISalud RD Apr 7, 2025