In Vitro Fertilisation

Department of Health written question – answered on 16th June 2015.

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Photo of Lord Winston Lord Winston Labour

To ask Her Majesty’s Government how many human eggs frozen by slow-cooling 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 transferred, how many have developed into pregnancies, and how many (i) live births, and (ii) early pregnancy losses or stillbirth, have resulted.

Photo of Lord Winston Lord Winston Labour

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 transferred, how many have developed into pregnancies, and how many (i) live births, and (ii) early pregnancy losses or stillbirth, have resulted.

Photo of Lord Prior of Brampton Lord Prior of Brampton The Parliamentary Under-Secretary of State, Department of Health

The Human Fertilisation and Embryology Authority (HFEA) has advised that it does not hold information on the method of freezing, vitrification or slow-cooling, during this period. The HFEA collects data on the other information requested on treatments and outcomes but cannot break this down by method of freezing. The relevant information held by the HFEA, as indicated on the treatment form completed at the time, is set out in the attached tables.

Treatment form information tables (Word Document, 20.42 KB)

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