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
Dans Chinois
| WPRIM
| ID: wpr-941041
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.
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Placenta
/
Diagnostic prénatal
/
Trisomie
/
Dépistage génétique
/
Hybridation fluorescente in situ
/
Maladies chromosomiques
/
Variations de nombre de copies de segment d'ADN
/
Mosaïcisme
Type d'étude:
Etude diagnostique
/
Étude pronostique
Limites du sujet:
Femelle
/
Humains
/
Nouveau-né
/
Grossesse
langue:
Chinois
Texte intégral:
Journal of Southern Medical University
Année:
2022
Type:
Article
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