Trophectoderm biopsy is associated with lower risks of moderate to extreme prematurity and low birthweights - a national registry cohort study of singleton live births from frozen-thawed blastocyst transfers

Trophectoderm biopsy has become the mainstay assisted reproductive technique performed for preimplantation genetic testing, accounting for 43.8% of embryo transfer cycles in the United States in 2019 alone. Despite its prevalence, data on the obstetric and perinatal outcomes post-trophectoderm biopsy remains sparse and mixed.