Egg Freezing

The treatment to preserve fertility consists of freezing eggs at -196º to ensure they remain young and in the best conditions, to enable women to decide when the best time to get pregnant is.
Egg Freezing
Fertility Preservation Lab

Fertility Preservation



  • Patients who want to postpone having a child for social reasons, women that would like to preserve their eggs for use in the future, providing more flexibility around their own fertility decisions.
  • Patients at risk of losing their ovarian function: for example women who have cancer and are going to be treated with chemotherapy or radiotherapy, autoimmune diseases which require chemotherapy, bone marrow transplants, and women who may need repeated ovarian surgery, for example, to treat endometriosis.

In 30 years, the IVI Group has helped more than 200,000 dreams come true.


97% of our patients said they would recommend IVI. We work with you at every stage of the treatment, providing support and care.


IVI has a worldwide reputation for innovative research and has developed and patented pioneering techniques and technologies.


IVI is one of the largest fertility providers in the world, with over 65 clinics in 9 countries.

Techniques for preserving fertility at IVI

The following preservation techniques are offered by IVI:

Mature eggs obtained following ovarian stimulation are cryopreserved using vitrification

Egg vitrification

Freezing of the ovarian cortex

Cryopreservation of the ovarian cortex

This can be useful for:

  • Cancer patients who need chemotherapy or radiotherapy immediately and do not have time for ovarian stimulation.
  • Girls who need cancer treatment and who have not yet reached puberty. This technique can also be used in conjunction with the vitrification of oocytes if appropriate.
  • Patients for whom ovarian stimulation might be contra-indicated.

Preservation of fertility at IVI: cancer patients

Ovarian function and preserving fertility are two of the aspects which most concern female cancer patients. Preserving your fertility when you are fighting cancer can help you maintain and enhance your self-esteem.

Improvements in treatments and screening programmes mean that more and more people are overcoming cancer. This increased survival rate has led to a greater focus on the secondary effects of treatments using chemotherapy and radiotherapy.

We at IVI have worked hard to find ways to offer cancer survivors options for preserving their fertility so that when they are well enough, the option of having a baby is still there for them.

The effects of cancer on fertility:

  • The ovarian cortex contains a set number of follicles, which are gradually lost throughout a woman’s life. Radiotherapy and chemotherapy speed up the natural reduction in the number of follicles and prevent them from maturing. This, together with the fact that ovaries cannot regenerate, can lead to premature ovarian failure.
  • The number of primordial follicles which survive following exposure to chemotherapy depends on many different factors such as age, the type of cancer, the agent used (chemotherapy or radiotherapy), the dosage and the number of cycles.
  • Not everybody will lose their reproductive capacity following treatment. However, even people whose ovarian function is restored may find that the quality of their eggs is compromised.
  • Pregnant women who had cancer during childhood experience a higher rate of miscarriage, a greater incidence of intrauterine growth retardation and a greater risk of premature births.
  • Premature ovarian failure can also lead in the longer term to bone and cardiovascular problems as a result of the ending of hormonal functions.

There are currently several different options and treatments available to cancer patients to help maintain their fertility:

  • Vitrification of ovocytes
  • Freezing of the ovarian tissue
  • Transposition of the ovaries
  • Medical protection of the gonads (GnRH agonists): this could prevent follicles from reaching their sensitivity threshold to chemotherapy by suppressing granulosa cells. The protective effect of GnRH-a may not be sufficient in the case of more prolonged treatments and higher doses of chemotherapy.
    Although its use is controversial, the most recent randomised studies seem to indicate some beneficial effects.
  • In vitro maturation of oocytes (IVM): this consists of recovering immature oocytes from small antral follicles which have not been stimulated or which have only been minimally stimulated, and their cultivation in a suitable medium until they reach maturity. In this way it is possible to avoid ovarian stimulation, and as a result it is a potential alternative to a standard IVF cycle. It may be useful in patients for whom, for one reason or another, ovarian stimulation is contra-indicated, such as patients with hormone-dependent tumours. IVM should be considered as a complementary technique to ovarian stimulation, for use in cases where there is no time to carry out ovarian stimulation, or when immature oocytes are obtained following stimulation.

These treatments aiming to preserve the fertility of cancer patients cannot guarantee a future pregnancy, but they do mean that it is possible to try.

Request your first appointment

Back to toparrow_drop_up