Mosaic double aneuploidy: Down syndrome and XYY.

Autor: Parihar M; Cytogenetics Unit, Christian Medical College, Vellore, Tamil Nadu, India., Koshy B, Srivastava VM
Jazyk: angličtina
Zdroj: Indian journal of human genetics [Indian J Hum Genet] 2013 Jul; Vol. 19 (3), pp. 346-8.
DOI: 10.4103/0971-6866.120825
Abstrakt: Chromosomal abnormalities are seen in nearly 1% of live born infants. We report a 5-year-old boy with the clinical features of Down syndrome, which is the most common human aneuploidy. Cytogenetic analysis showed a mosaicism for a double aneuploidy, Down syndrome and XYY. The karyotype was 47, XY,+21[19]/48, XYY,+21[6]. ish XYY (DXZ1 × 1, DYZ1 × 2). Mosaic double aneuploidies are very rare and features of only one of the aneuploidies may predominate in childhood. Cytogenetic analysis is recommended even if the typical features of a recognized aneuploidy are present so that any associated abnormality may be detected. This will enable early intervention to provide the adequate supportive care and management.
Databáze: MEDLINE