Abstract |
Birth defects are caused by multiple factors, such as chromosome abnormality, environmental factors, and maternal factors. In this study, we focused on exploring the genetic causes of a non-consanguineous couple who suffered from four times of unsuccessful pregnancy due to unexplained recurrent fetal malformations with similar symptoms and normal chromosome copy number variations. Using trio-whole exome sequencing (trio-WES) for this couple and one of the affected fetuses, we found a mutation, c.1996delC on the maternal imprinted gene MAGEL2 that was carried by the affected fetus and husband, leading to Schaaf-Yang syndrome. To screen this mutation, we further performed preimplantation genetic diagnosis ( PGD) strategy followed by a gene pedigree validation and pathogenicity analysis. After the transfer of a PGD-screened embryo, a normal newborn without previous abnormal symptoms was born (February 15, 2019). We present the first data that identified a pathogenic gene (MAGEL2 c.1996delC) in a fetus with Schaaf-Yang syndrome in the EAS (East Asian) database and overcame this genetic defect by using processed PGD for this couple based on the WES results.
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Authors | Wei Guo, Yanli Nie, Zhiqiang Yan, Xiaohui Zhu, Yuqian Wang, Shuo Guan, Ying Kuo, Wenxin Zhang, Xu Zhi, Yuan Wei, Liying Yan, Jie Qiao |
Journal | Science China. Life sciences
(Sci China Life Sci)
Vol. 62
Issue 7
Pg. 886-894
(Jul 2019)
ISSN: 1869-1889 [Electronic] China |
PMID | 31152388
(Publication Type: Journal Article)
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Chemical References |
- MAGEL2 protein, human
- Proteins
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Topics |
- DNA Copy Number Variations
- Databases, Genetic
- Embryonic Development
(genetics)
- Female
- Fetus
(physiopathology)
- Humans
- Infant, Newborn
- Intellectual Disability
(genetics)
- Male
- Mutation
- Pedigree
- Pregnancy
- Preimplantation Diagnosis
- Proteins
(genetics)
- Exome Sequencing
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