IVF
(asked on 22nd June 2023) - View Source
Question to the Department of Health and Social Care:
To ask His Majesty's Government, further to the Written Answer by Lord Markham on 22 June (HL8340), whether the implantation failure rate for all other treatments is therefore incomparably low relative to that to date for pronuclear transfer; or whether the number of successful treatments to date for pronuclear transfer is incomparably low; and what is the implantation failure rate for all other treatments regulated by the Human Fertilisation and Embryology Authority.
The Human Fertilisation and Embryology Authority (HFEA) has advised that it has not made any assessment of whether the implantation failure rate for all other treatments is incomparably low relative to that to date for pronuclear transfer; or whether the number of successful treatments to date for pronuclear transfer is incomparably low. The HFEA routinely publish implantation success rates. The implantation failure rate is the remainder.
The following table shows the average implantation rate and implantation failure rate per embryo transferred from fresh embryo transfer using patients eggs by patient age, 2021.
Year | Implantation rate per embryo transferred | Implantation failure rate per embryo transferred |
Age 18 to 34 years old | 41% | 59% |
Age 35 to 37 years old | 33% | 67% |
Age 38 to 39 years old | 25% | 75% |
Age 40 to 42 years old | 16% | 84% |
Age 43 to 50 years old | 6% | 94% |
Source: HFEA
Implantation rates for 2021 are preliminary. This data includes IVF treatment cycles begun with the intention of having a live birth only and includes fresh embryo transfers. PGT-A/M/SR treatments and treatments using donor eggs or surrogacy have been excluded.