Genetic testing and analysis of 2 cases of trisomy 11 mosaicism / 南方医科大学学报
Journal of Southern Medical University
; (12): 1057-1061, 2022.
Article
em Zh
| WPRIM
| ID: wpr-941041
Biblioteca responsável:
WPRO
ABSTRACT
Trisomy 11 mosaicism is clinically rare, for which making diagnostic and treatment decisions can be challenging. In this study, we used noninvasive prenatal testing, chromosome karyotype analysis, chromosome microarray analysis, copy number variation sequencing and fluorescence in situ hybridization for detecting trisomy 11 mosaicism in two cases and provided them with genetic counseling. In one of the cases, the fetus with confined placental mosaicism trisomy 11 presented with severe growth restriction and a placental mosaic level of 44%, and pregnancy was terminated at 25+3 weeks of gestation. In the other case with true low-level fetal mosaicism of trisomy 11, the pregnancy continued after exclusion of the possibility of uniparental disomy and structural abnormalities and careful prenatal counseling. The newborn was followed up for more than one year, and no abnormality was found. Noninvasive prenatal testing is capable of detecting chromosomal mosaicism but may cause missed diagnosis of true fetal mosaicism. For cases with positive noninvasive prenatal testing but a normal karyotype of the fetus, care should be taken in prenatal counseling and pregnancy management.
Palavras-chave
Texto completo:
1
Base de dados:
WPRIM
Assunto principal:
Placenta
/
Diagnóstico Pré-Natal
/
Trissomia
/
Testes Genéticos
/
Hibridização in Situ Fluorescente
/
Transtornos Cromossômicos
/
Variações do Número de Cópias de DNA
/
Mosaicismo
Tipo de estudo:
Diagnostic_studies
/
Prognostic_studies
Limite:
Female
/
Humans
/
Newborn
/
Pregnancy
Idioma:
Zh
Revista:
Journal of Southern Medical University
Ano de publicação:
2022
Tipo de documento:
Article