Genetic Analysis of a Fetus with 14q11.2 Microdeletion in Ultrasound Abnormalities.

Background: This study aimed to explore the genetic basis of a fetus with ultrasound indicating a thickening of the nuchal translucency (NT) and a choroid plexus cyst. Methods: Fetal amniotic fluid and peripheral blood were collected for a G-banding karyotype analysis and single nucleotide polymorphism array (SNP-array) detection. Results: The chromosome karyotypes of the fetus and its parents were normal. SNP-array showed the fetus had carried 277 kb microdeletion at 14q11.2, which was a new mutation. After the induced abortion, the fetus was diagnosed with macrocephaly. Conclusions: A prenatal diagnosis of a fetus with 14q11.2 microdeletion-induced intrauterine growth retardation was confirmed, which has provided guidance for the subsequent pregnancy. [ABSTRACT FROM AUTHOR]