Can IVF avoid birth defects?
Birth defects are a major concern for many prospective parents during the process of preparing for and giving birth to a child. With the development of IVF technology, many people expect to reduce the risk of birth defects through this assisted reproductive technology. So, can IVF really avoid birth defects? I. Advantages of IVF technology in reducing birth defects 1. The core of the third generation of IVF – Pre-implantation Genetic Testing (PGT) technology This is an important tool used in IVF to screen the genetic material of embryos. PGT technology includes PGT – A (Aneuploidy Screening), PGT – M (Monogenic Disease Detection) and PGT – SR (Chromosomal Rearrangement Detection). PGT – A: It is mainly used to test whether the chromosome number of the embryo is normal. During natural conception, chromosomal abnormalities in embryos are an important cause of early miscarriage and birth defects. With PGT-A, all 23 pairs of chromosomes in an embryo can be screened and those with a normal number of chromosomes can be selected for transfer. For example, as the quality of eggs of women of advanced maternal age decreases and the probability of chromosomal abnormalities in embryos is higher, PGT – A technology can effectively reduce birth defects such as Down’s Syndrome caused by abnormal chromosome numbers. PGT – M: For known single-gene genetic diseases, such as thalassaemia and cystic fibrosis. If both husband and wife carry the causative gene of a certain single-gene genetic disease, PGT – M can detect whether they carry the causative gene at the embryo stage, so that healthy embryos without the causative gene can be selected for implantation, thus fundamentally avoiding the emergence of this type of single-gene genetic disease in the offspring. PGT – SR: It is used to detect the presence of chromosomal structural abnormalities, such as chromosomal balanced translocations and…