For all enquiries 01482 382 648

Hull IVF

For all enquiries 01482 382 648

Success Rates

Frozen Embryo Transfer Cycles

Frozen treatment cycles – Clinical Pregnancy Results 2019

Patients’ own eggs

Our 2019 results for frozen embryo transfer cycles have not yet been validated by the HFEA, but we like to keep you informed of our current success rates. In 2019, 125 frozen embryo transfer (FET) cycles using the patients’ own eggs resulted in an embryo transfer. The following table only includes patients using their own eggs. No surrogacy cases are included.

The success of frozen embryo transfers may depend more on the age of the patient at embryo freezing than their age at embryo transfer, therefore, the results have been broken down into age categories for their age at freeze.

2019, patients’ own eggs
Age at freeze Clinical pregnancy events per treatment cycle started Clinical pregnancy events per embryo transfer Foetal hearts per embryo transferred.
All ages 51/125, 40.8% 51/125, 40.8% 54/135, 40.0%, 48 singletons, 3 twins.
<35 40/86, 46.5% 40/86, 46.5% 43/91, 47.3%, 37 singletons, 3 twins.
35-37 10/26, 38.5% 10/26, 38.5% 10/29, 34.5%, 10 singletons.
38-39 1/7, 14.3% 1/7, 14.3% 1/8, 12.5%, 1 singleton.
≥40 0/6, 0% 0/6, 0% 0/7, 0%.

 

Frozen treatment cycles – Live Birth Results 2018 (full calendar year)

In 2018, 94 frozen embryo treatment cycles using the patients’ own eggs resulted in an embryo transfer. As this is the most recent data the results have not yet been validated by the HFEA, but we like to keep you informed of our current success rates. The following table only includes patients using their own eggs. No surrogacy cases are included.

The success of frozen embryo transfers may depend more on the age of the patient at embryo freezing than their age at embryo transfer, therefore, the results have been broken down into age categories for the patients’ age at freeze.

 

2018, patients’ own eggs
Age Live birth events per embryo transfer Live births per embryo transferred
All ages 41/94, 43.6% 43/102, 42.2%, 39 singletons, 2 twins.
<35 34/68 50.0% 35/73, 47.9%, 33 singletons, 1 twin.
35-37 2/13, 15.4% 2/13, 15.4%, 2 singletons.
38-39 3/12, 25.0% 3/14, 21.4%, 3 singletons.
≥40 0/1, 0% 0/2, 0%

 

Frozen embryo transfer cycles – HFEA validated

Patients’ own eggs

The below table shows the live births per embryo transferred for patients undergoing frozen embryo transfer from January 2015 to December 2017 using their own eggs. These results have been validated by the HFEA.

 

2015-2017, patients’ own eggs, frozen embryo transfers
Age Live births per embryo transferred Comments
Clinic results National average
All ages 108/418, 26% 23% Consistent with national average
Under 35 72/266, 27% 27% Consistent with national average
35-37 26/114, 23% 23% Consistent with national average
38-39 17% Too few patients to provide accurate data
40-42 12% Too few patients to provide accurate data
43-44 0 5% None performed within date range
Over 44 0 3% None performed within date range

 

Donated eggs

Some patients who create embryos with donor eggs may have embryos frozen and used in a frozen embryo transfer cycle. Clinical pregnancy rates and live birth rates for 2015-2017 are shown below. Please note these results are for a 3-year period due to low patient numbers. These results have been validated by the HFEA.

 

2015-2017, donated eggs, all ages Results National Average Comments
Clinical pregnancy per cycle 7/25, 28% 35% Consistent with national average
Live Birth per cycle 6.25, 24% 30% Consistent with national average
Clinical pregnancy per embryo transferred 7/34, 21% 29% Consistent with national average
Live birth per embryo transferred 6/34, 18% 25% Consistent with national average

 

Page Last Modified: 20th August 2020