Genetic testing: couples ensuring they have healthy babies

admin | 杭州桑拿
7 Jul 2019

More couples are using a technique called Pre-implantation Genetic Diagnosis to ensure they have a healthy babyMore couples are using a sophisticated scientific test to ensure they have a healthy baby, according to research released by the Australian and New Zealand Assisted Reproduction Database on Thursday.

The number of assisted reproductive technology (ART) cycles involving the technique called Pre-implantation Genetic Diagnosis (PGD) almost doubled between 2011 and 2012.

Under the procedure, cells are removed from an embryo before implantation and tested for genetic or chromosomal conditions such as Huntington’s disease, cystic fibrosis or hereditary breast and ovarian cancer.

According to the report produced by the University of NSW, the number of cycles involving PGD increased by 94 per cent from 1182 in 2011 to 2294 in 2012.

The report found an overall increase in ART with the number of  treatment cycles increasing by almost 6 per cent in Australia between 2011 and 2012.

Almost 33,000 Australian women underwent about 64,000 reproductive treatment cycles.

The average age of a woman undergoing ART with her own eggs was 35, but just over one-quarter of patients were aged 40 or older.

For women aged under 30, the live delivery rate was 26 per cent but for those aged over 44 the rate dropped to 0.9 per cent for a cycle using a fresh embryo and 4.6 per cent for a cycle using a thawed embryo.

There were 12,304 babies born following ART treatment Australian clinics in 2012, with more than three-quarters of them full-term singletons of average birthweight.

The proportion of multiple births following ART decreased slightly to 6.5 per cent in 2012 but is still more than four times higher than the Australian average from all conceptions.

IVF Australia consultant and professor of obstetrics and gynaecology at UNSW Michael Chapman said the low rate of multiple births showed Australia was a world leader in safe IVF with specialists favouring single embryo transfers.

About one in 10 couples are infertile with the report finding male infertility was a factor in 22 per cent of ART procedures and female infertility the cause in 28 per cent of cases.

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