Question
To ask Her Majesty’s Government with regard to (1) oocytes frozen for a patients' own use in the UK, and (2) frozen oocytes used for the purpose of donation to another woman, in how many cases for each year from 2008 to 2015 more than one embryo was transferred simultaneously to the uterus and how many multiple pregnancies or multiple births have resulted.
Answered on
8 November 2016
The Human Fertilisation and Embryology Authority has provided data in the following table.
Patients using their own eggs:
Year of treatment | Multiple Embryo Transfer events | Incidences of Multiple births or pregnancies from multiple embryo transfer events |
2008 | 10 | 0 |
2009 | 23 | 0 |
2010 | 34 | Less than 5 |
2011 | 25 | Less than 5 |
2012 | 44 | Less than 5 |
2013 | 46 | Less than 5 |
2014 (Mid year for births) | 58 | 0 |
2015 (Mid year for births) | 38 | * |
Patients using donor eggs:
Year of treatment | Multiple Embryo Transfer Events | Incidences of Multiple births or pregnancies from multiple embryo transfer events |
2008 | 0 | 0 |
2009 | Less than 5 | 0 |
2010 | 21 | Less than 5 |
2011 | 46 | 5 |
2012 | 44 | Less than 5 |
2013 | 46 | Less than 5 |
2014 (Mid year for births) | 64 | 7 |
2015 (Mid year for treatments) | 74 | * |
* Part year data not available.