Prenatal cytogenetic findings in 13.466 cases of high-risk pregnant women in one laboratory

Abstract

Objective: This study was aimed to evaluate cytogenetic findings of high risk pregnancies according to indications. Study Design: Between years 2001 and 2009, a large series of 13466 pregnant women with various high-risk factors were referred to our genetic laboratory for prenatal genetic diagnosis. 12.124 amniocentesis, 212 chorionic villus sampling (CVS), 173 percutaneous umbilical blood sampling (PUBS) samples and 809 fetal and placental tissue samples (from aborted or from stillbirth fetuses) were collected. All of the cytogenetic findings were assessed retrospectively. We compared the cytogenetic results in the distribution of indication groups.