What is PGD or Preimplantation Genetic Diagnosis?2019-09-03T14:07:17+00:00
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Preimplantation Genetic Diagnosis (PGT-M)

Prevents the transmission of hereditary genetic alterations

Preimplantation genetic diagnosis is a well-proven technique that practically eliminates the transmission of numerous genetic diseases from parents to children. It is carried out within the framework of an in vitro fertilization cycle, and allows the diseased embryo to be detected before it is transferred to the woman’s uterus.

Preimplantation genetic diagnosis is a well-proven technique that practically eliminates the transmission of numerous genetic diseases from parents to children. It is carried out within the framework of an in vitro fertilization cycle, and allows the diseased embryo to be detected before it is transferred to the woman’s uterus.

Benefits

It prevents the transmission of diseases such as Cystic Fibrosis, Thalassaemia or Muscular Dystrophy, among many others.

Process

Step 1

Study icon

Genetic study

After in vitro fertilization, and before the transfer to the uterus, the genetic material of the embryo is studied in order to detect genetic alterations.

Step 2

Embryo biopsy

A biopsy is performed on each embryo and those which have a specific congenital disease are discarded.

Step 3

Transfer

One to two healthy embryos are transferred. The healthy embryos can be frozen.

Step 1

Study icon

Genetic study

After in vitro fertilization, and before the transfer to the uterus, the genetic material of the embryo is studied in order to detect genetic alterations.

Step 2

Embryo biopsy

A biopsy is performed on each embryo and those which have a specific congenital disease are discarded.

Step 3

Transfer

One to two healthy embryos are transferred. The healthy embryos can be frozen.

The diagnosis can be obtained in two different ways

Icon lupa embryos
Icon lupa embryos

Preimplantation Genetic Diagnosis with embryos

This study is done when the embryos are preferably at the blastocyst stage or at the 6-8 cell phase, depending on embryo quality and quantity. To study their genetic material, a biopsy is carried out on each one. Those with a genetic disease are discarded and only the healthy embryos are selected, which are the ones that are transferred to the uterus.

Preimplantation Genetic Diagnosis with eggs

This technique allows us to detect genetic or chromosomal diseases in the egg, before the embryo is formed. A part of the egg, the so-called polar corpuscle, is analyzed, so only hereditary pathologies from the mother can be detected. A biopsy is done, and once the polar corpuscle is removed, the oocytes are inseminated with the intracytoplasmic sperm injection (ICSI). After two days, the genetic result is obtained and the embryos from the healthy oocytes are selected for transfer.

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Pre-diagnosis

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