Systematic Analysis of Copy-Number Variations Associated with Early Pregnancy Loss.

(Abstracted from Ultrasound Obstet Gynecol 2020;55:96–104) Early pregnancy loss is most commonly caused by embryonic numerical and structural chromosomal abnormalities, which explain more than 50% of miscarriages. In more recent years, submicroscopic copy-number variations (CNVs) have also been identified in some early miscarriage specimens.