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Research: Prenatal diagnosis of Coffin-Siris syndrome: WHAT ARE THE FETAL FEATURES?

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Research: Prenatal diagnosis of Coffin-Siris syndrome: WHAT ARE THE FETAL FEATURES?

Prenat Diagn

. 2022 Jul 7.

 doi: 10.1002/pd.6213. Online ahead of print. https://pubmed.ncbi.nlm.nih.gov/35801292/

Prenatal diagnosis of Coffin-Siris syndrome: WHAT ARE THE FETAL FEATURES?

Qiu-Xia Yu 1Xiang-Yi Jing 1Xiao-Mei Lin 1Li Zhen 1Dong-Zhi Li 1

Affiliations expand

Abstract

Objective: To present both our center’s and previously reported experience of prenatal diagnosis of Coffin-Siris syndrome (CSS) with regard to the laboratory testing and fetal features of this syndrome.

Methods: This was a retrospective study of eight pregnancies with fetal CSS identified by prenatal or postnatal genetic testing. Clinical and laboratory data were collected and reviewed for these cases, including maternal demographics, prenatal sonographic findings, chromosomal microarray and exome sequencing (ES) results, and pregnancy outcomes.

Results: A total of eight cases of fetal CSS based on molecular testing were detected. Two cases presented with an increased nuchal translucency (NT) in the first trimester. The remaining six were identified at the second trimester scan. Agenesis of the corpus callosum (ACC) was the most common sonographic finding, accounting for 5/7 (71.4%) cases in which a second trimester sonogram was performed: four had ACC as an isolated finding, and one had additional features of cerebellar hypoplasia and left congenital diaphragmatic hernia.

Conclusion: CSS should be included in the differential diagnosis when ACC is found by prenatal ultrasound. Both chromosomal microarray and ES should be options when counseling patients with a structurally anomalous fetus. This article is protected by copyright. All rights reserved.

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