genetics

What tests do I need to have before egg donation treatment?

Egg donation has become an option for women who, for whatever reason, can no longer use their own ova. For example, due to poor ovarian reserve, poor oocyte quality and premature menopause.

The process is widely used in Spain. As well as exceeding organ
donations and transplants in number, we also have the largest number of egg
donors in Europe.

It […]

2019-02-15T09:45:38+02:0015 de February de 2019|0 Comments

10 things you should know if you want to freeze your eggs

1 . Does it hurt?
Egg Retrieval is painless. It is carried out by means of a simple vaginal procedure, and the patient is lightly sedated.
2. What’s the right age for preserving my eggs?
Whilst there is no minimum nor maximum age, it is advisable to undergo the procedure before 35 years of age in order to obtain a sufficient number of good quality eggs because, from 35 years of age onwards, there tends to be a decrease in both their quantity and quality. […]

2018-05-15T09:58:43+02:0018 de May de 2018|0 Comments

Children born to blood relatives

The question of relationships between blood relatives has been approached in many different ways throughout the course of history. There have been times when relationships of this kind have been commonly accepted, whilst at other times they have been prohibited for moral, religious or even scientific reasons.
Relationships between blood relatives were actively encouraged in some primitive cultures in order to promote clan unity. For example, marriage between members of the same family in ancient Egypt. The legislation in a large number of US States currently prohibits and actively pursues relationships between first cousins. […]

2018-02-16T14:03:20+02:0016 de February de 2018|0 Comments

Reproduction and genetics guidance

Genetics guidance is the exchange through which an expert in genetics provides patients and their families with information and support on a genetic condition, inheriting that condition, the risk of recurrence and the implications for the individual and his or her family.
The aim of genetics guidance is to support the decision-making process whilst taking the patient’s values and beliefs into account, and to proceed based on the decision taken.
In the specific case of reproduction guidance, it is a question of guiding couples who are in a reproductive stage of their lives and who wish to have children and/or who are currently expecting a child. Therefore, we generally have two types of patients who need reproduction guidance. Whilst there are fundamental differences between the two, the aims of the guidance process remain the same and include: […]

2018-01-18T11:24:26+02:0019 de January de 2018|0 Comments

Egg donor DNA storage bank

Thanks to the donor DNA storage bank at Instituto Bernabeu, patients who need to make use of donated gametes for their fertility treatment may, at any time, make a request (further to egg donor consent) for necessary genetics studies to be carried out with a view to preventing and adequately treating any conditions that may affect their children […]

2017-11-15T12:28:55+02:0017 de November de 2017|1 Comment

Genetic Incompatibility between the couple, does this exist?

It is thought that about 20% of the reproductive problems are genetic or chromosomal. That is why the genetic testing is now an essential part of the fertility study carried out on couples who come to our centre for help to have children. […]

2017-11-02T10:19:58+02:003 de November de 2017|0 Comments

How do genetics and epigenetics affect the embryo?

What are genetics and epigenetics?
Genetics and epigenetics are two, closely-related branches of biology. The former is much more well known and consists of studying how hereditary characteristics are passed on from generation to generation. DNA is the molecule in which genetic information is stored in a 4-letter code:  A, C, G and T. The combination of letters is not a matter of chance. On the contrary, they combine in a precise manner because, in living things, the 4 letters make up the code for generating the instructions (genes) for synthesising all proteins.  This DNA is in the nucleus of the cells linked to the histones around which DNA wraps itself, as if it were a spool of thread. […]

2017-10-27T11:32:14+02:0027 de October de 2017|0 Comments

If you’re thinking about becoming a mother using donated eggs, here are eight questions and answers for you

As is only to be expected, women have a number of doubts when they first take the important decision to become a mother using an egg donated by another women. The first reaction is one of shock when a woman finds out that she will need to rely on egg donation. Once they have had time to come to terms with the situation, many women take it on board naturally and accept the option that will allow them to give birth to their child. For others, however, the process takes longer and it needs to be thought through before it can be accepted or, in some cases, rejected.
Women go through what is known as genetic mourning during the process when they become aware of the fact that the baby will not have their genes. According to the experts at Instituto Bernabeu, accepting this situation from the outset is the best way forward if patients are to avoid turning the doubts and questions that come up along the way into a concern or even an obsession for the future mother. […]

2019-02-14T15:00:24+02:0013 de October de 2017|0 Comments

Should embryos with chromosomal mosaicism be rejected?

When good quality embryos do not implant correctly or lead to pregnancy loss, in vitro fertilisation (IVF) does not provide us with the results we had hoped for. This is often because the embryo is a carrier of abnormal chromosomes. Fortunately, in our clinic, we have access to the very latest in embryo chromosome diagnosis techniques such as array CGH and next generation sequencing (NGS). We can use this technology to detect abnormalities in the embryo that will cause pregnancy loss or that will lead to the birth of a child with chromosomal abnormalities such as Down’s Syndrome, also known as trisomy 21. As such, we can use these techniques to select and transfer the embryos with the greatest chance of leading to the birth of healthy child. […]

2018-03-26T17:47:29+02:0025 de August de 2017|0 Comments

The advantages and disadvantages of pre-implantation genetic diagnosis (PGD)

Pre-implantation genetic diagnosis (PGD) consists of studying chromosomal abnormalities and genetic abnormalities in the embryo prior to transfer to the mother. Its purpose is to ensure that children are healthy and put an end to the transmission of a specific condition.
There are two types of PGD: the PGD aimed at selecting embryos that are free of a genetic disorder affecting a single gene (PGD) and the PGD that analyses genetic diseases affecting one or more chromosomes (PGS/PGT-A/CCS or PGS). Their names are sometimes a cause for confusion. The post entitled Are PGD, PGS and CCS all one and the same? clarifies the differences between them. […]

2018-03-28T10:52:16+02:0019 de May de 2017|0 Comments
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