Genetic engineering refers to changes made to the genetic structure of living things. Human genetic engineering is permitted for two types of gene therapy: somatic cell therapy and the the creation of saviour siblings. Some people would like to take genetic engineering further and create designer babies.
Somatic Cell Therapy
This is a treatment that adds to, enhances or replaces a defective gene. It is a treatment for single genetic disorders such as X-SCID (X-linked severe combined immunodeficiency), which means that any infection is likely to prove fatal.
Saviour Siblings
This technique is used to save the life of a child with a life-threatening disorder. In the UK, every treatment has to be approved by the HFEA. The treatment combines IVF with PGD (pre-implantation genetic diagnosis), which is a form of genetic screening. If a baby is born free from the disorder, its cord blood can be used to treat the sick sibling.
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