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What is CGT?
The Compatibility Genetic Test (CGT) is a test that allows us to identify the presence in future parents of genes that cause diseases which they risk passing on to their children. Carriers are usually healthy, but when both parents are carriers of a mutation of the same gene it is possible for them to have a child affected by a particular disease.
1 in every 100 babies born presents some kind of genetic disease. With the CGT we can detect up to 600 diseases.
Genetic diseases cannot be cured, but they can be prevented with the CGT.
In what cases is it indicated?
We all have alterations in our genes, and with the CGT we can find out if these alterations could lead to our children having a genetic disease. The test is recommended in the following cases.
- Prior to an assisted reproduction treatment: it is advised in order to know the risk of transmission so that the best type of treatment can be decided on in each case.
- Prior to a treatment using donor eggs or semen:in order to be able to select a donor who is not a carrier of the same mutation as the member of the couple who is providing the gametes (ova or spermatozoa) we carry out the test on our donors.
- Before trying to become pregnant naturally:for any woman who wants to become pregnant, so that she knows the risk of passing on possible diseases to her child.
In 26 years, the IVI Group has helped more than 160,000 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 70 clinics in 13 countries.
How is it done?
The test is carried out on DNA obtained from blood samples from the father and the mother. The results come through in a month, and we can then find out the probability of your child suffering from a genetic disease.
Why take the test?
Because it reduces the theoretical risk of having children who are affected by any of these genetic diseases from 1 in 100 to approximately 1 in 30,000. Genetic diseases cannot be cured, but they can be prevented with the CGT. Every year, many parents are surprised when their baby is born with some sort of genetic disease. This happens because in order for the disease to manifest, the child has to inherit an affected copy of a gene from both its father and its mother. When both parents have only 1 copy of the mutation, they are carriers of the disease but are themselves healthy.
Our main objective at IVI is for our patients to have healthy children.
What happens when a mutation is detected?
When a mutation is detected in one member of a couple, nothing is done unless the other member of the couple has a mutation in the same gene. This would result in there being a high risk of having children who suffer from the genetic disease.
In that case, the options for conceiving a child who is not affected by the disease are:
- Treatment with in vitro fertilisation and Pre-implantation Genetic Diagnosis: for the majority of these diseases, we can use this technique to determine which embryos are affected and implant in the mother only those that are free of the disease.
- Gamete donation: we can opt for an assisted reproduction treatment using sperm or eggs from a donor who is not a carrier of the disease.