Genetic screening for deafness in pregnant women has 235 loci in GJB2.
Deafness genetic testing can be used to find out if there is a deafness gene mutation by sequencing the DNA. Genetic Screening for Deafness in Pregnant Women consists of 4 main genes, including GJB2, SLC26A4, mitochondrial 12SrRNA, and GJB34 common causative genes. mutations in GJB2 are mostly heterozygous and are considered to be caused by a genetic mutation, which is inherited in an autosomal recessive manner.
The test can be done at any time, the earlier the better, and can be done at the same time as the documentation at the community hospital. For couples with a history of deafness in the family, a deafness gene test is needed to prevent congenital disorders in children in advance, which is conducive to eugenics.