Lord Winston

To ask His Majesty's Government how many women have had their eggs (oocytes) frozen in each year between 2014 and 2019.

To ask His Majesty's Government what provisions they have in place to ensure that children who were conceived following in vitro fertilisation, following oocyte freezing, receive medical follow up.

To ask His Majesty's Government, between 2014 and 2019, how many women receiving frozen or thawed eggs (oocytes) subsequently had a live birth at term; and of this number, how many foetal or neonatal abnormalities were reported.

To ask His Majesty's Government, between 2014 and 2019, how many women undergoing a uterine transfer of one or more embryo(s) produced by fertilising a thawed egg had a positive pregnancy test; and how many pregnancies resulted in a spontaneous abortion (...

To ask His Majesty's Government, of the human eggs (oocytes) harvested between 2014 and 2019, how many of the fertilised eggs produced viable embryos suitable for uterine transfer; and how many embryos were transferred to the uterus for the purpose of pro...

To ask His Majesty's Government how many human eggs (oocytes) were harvested and frozen by vitrification between 2014 and 2019 for social purposes such as the preservation of a woman’s fertility; of this number, how many of these eggs (1) were thawed in o...

To ask His Majesty's Government how many UK clinics are licensed to undertake human oocyte freezing for clinical purposes.

To ask Her Majesty's Government how many misdiagnoses have been recorded by the Human Fertilisation and Embryology Authority following IVF with preimplantation diagnosis for a specific pathological mutation (1) at the preimplantation stage, and (2) follow...

To ask Her Majesty's Government what clinical, or other follow up, is being undertaken by the Human Fertilisation and Embryology Authority of children born after (1) embryo biopsy and preimplantation genetic diagnosis of nuclear DNA, (2) chromosome analys...

To ask Her Majesty's Government how many UK clinics have been granted a licence by the Human Fertilisation and Embryology Authority to undertake screening and treatment for mitochondrial disorders; how many patients at risk of producing a child with mitoc...

To ask Her Majesty's Government, with regard to oocytes frozen for a patient's own use, in how many cases in each year since 2013 was more than one embryo transferred simultaneously to the uterus; and how many multiple pregnancies resulted.

To ask Her Majesty's Government, in respect of oocytes frozen for a patient's own use, how many pregnancies, births, and miscarriages have resulted in each year since 2013, after the fertilisation of such oocytes in cases when those oocytes were collected...

To ask Her Majesty's Government how many of the oocytes frozen for a patient's own use in the UK since 2013 were frozen and thawed for the purpose of treatment by in vitro fertilisation; of those that were thawed, how many were successfully fertilised and...

To ask Her Majesty's Government, in each year since 2008, what has been the incidence of (1) foetal abnormalities, and (2) autism or other neurological disorder, in birth or pregnancies resulting from the use of frozen oocytes after thawing and fertilisat...

To ask Her Majesty’s Government in each year from 2008 to 2015 what is the incidence of foetal abnormalities in births which have resulted from treatments using (1) oocytes frozen for a patients' own use in the UK, and (2) frozen oocytes used for the purp...

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 trans...

To ask Her Majesty’s Government with regard to (1) oocytes frozen for a patient's own use in the UK, and (2) frozen oocytes used for the purpose of donation to another woman, for each year from 2008 to 2015 (a) how many oocytes were frozen and how many ha...

To ask Her Majesty’s Government in respect of (1) oocytes frozen for a patient's own use in the UK, and (2) frozen oocytes for the purpose of donation to another woman, how many patients had a live birth after they reached the age of 35.

To ask Her Majesty’s Government what plans they have to ensure the follow-up of children born after fertilisation of frozen oocytes, in particular to understand any epigenetic or other deleterious effects that might be associated with egg freezing.

To ask Her Majesty’s Government how many human eggs frozen by vitrification have been (1) thawed, and (2) fertilised, in the last six years; how many of those have (a) developed into embryos, and (b) been transferred to a recipient uterus; and of those tr...