Why is my child being referred for Genetic Testing?
- Last Updated: Oct 13th, 2018
The child being referred for Genetic Testing because the gene is an essential part of hearing loss testing process. It is performed to determine the causes of hearing loss due to genetic or non-genetic factors.
The children inherit features from patients such as hair color or eye color, sometimes hearing loss is inherited. Commonly people have 23 pairs of chromosomes – microscopic structures that contain genes – in each of their cells. In every pair of chromosomes, one is inherited from the mother and the other is inherited from the father.
In some cases there is a change occurs in a particular gene that produces the different characteristic, for example, hearing loss. The changes occurred in a gene is known as a ‘fault’ or ‘mutation’.
Reasons for a child being referred for Genetic Testing:
Family history: If one or more members of the family are suffering from some of the diseases or early death in the family happens. The children belong to these kinds of families are referred for the genetic test.
Delayed growth and development: Sometimes the parents have a concern that there is the delay in the growth of their child. Such children are suggested to have a genetic test.
Reproductive issues: The women whose ultrasound indicates that she can have complications in their pregnancy. The couple who are first cousins or have some blood relations. Their children are more likely to be imposed for any genetic disorder. So in order to get rid of diseases, they should undergo a genetic test.
Researchers basically categorized hearing loss in two type Non-Syndromic and Syndromic hearing loss
Non-Syndromic: Non-syndromic hearing loss is that which does not produce any other symptoms.
Syndromic: Syndromic hearing loss is that which produce with other symptoms or medical conditions
There are two genetic factors which are responsible for hearing loss:
Dominant inheritance: Genes can work in different ways. Sometimes a child only needs to inherit one gene, from either their mother or their father (dominant inheritance), to have that particular characteristic.
Recessive inheritance: Sometimes the child would need to have the same gene passed on from both parents in order to have a condition (recessive inheritance).