Mutation analysis and prenatal diagnosis of a family with congenital contractural arachnodactyly.

Abstract

BACKGROUND:

Congenital contractural arachnodactyly (CCA) is a rare autosomal dominant condition caused by mutations in the fibrillin 2 gene (FBN2). The primary clinical symptoms of CCA include multiple flexion contractures, arachnodactyly, dolichostenomelia, scoliosis, abnormal pinnae, muscular hypoplasia, and crumpled ears.

METHODS:

We used whole-exome sequencing technology to examine an arthrogryposis multiplex congenita and used Sanger sequencing technology to genetically confirm its family.

RESULTS:

FBN2 c.3344A>T(p.D1115V) was identified in this family with CCA in a pedigree. Prenatal diagnosis and counseling were carried out simultaneously to avoid the birth of the sick fetus.

CONCLUSION:

The study is on FBN2 variant in CCA, which potentially having implications for genetic counseling and clinical management, our study may provide new insights into the cause and diagnosis of CCA.

• Authors: Lin Hu, Huanzheng Li, Guang Sun, Ke Wu, Zhaotang Luan, Yanbao Xiang, Shaohua Tang
• Journal: Molecular genetics & genomic medicine (Mol Genet Genomic Med) Vol. 9 Issue 4 Pg. e1638 (04 2021) ISSN: 2324-9269 [Electronic] United States
• PMID: 33638605 (Publication Type: Case Reports, Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2021 The Authors. Molecular Genetics & Genomic Medicine published by Wiley Periodicals LLC.

Chemical References

• FBN2 protein, human
• Fibrillin-2

Topics

• Adult
• Amniocentesis
• Arachnodactyly (genetics, pathology)
• Contracture (genetics, pathology)
• Female
• Fibrillin-2 (genetics)
• Humans
• Male
• Mutation, Missense
• Pedigree
• Pregnancy
• Whole Genome Sequencing