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Article in Chinese | WPRIM | ID: wpr-799976

ABSTRACT

Objective@#To carry out genetic testing for a boy presenting with mental retardation and hypoplasia.@*Methods@#Conventional karyotyping, fluorescence in situ hybridization (FISH) and single nucleotide polymorphism based array (SNP-array) were used to analyze the boy and his parents.@*Results@#SNP-array has detected a 25.7 Mb microduplication at 2q33.3q36.3 in the boy. Chromosomal karyotyping and FISH analysis indicated that his mother had a karyotype of 46, XX, ish ins(11; 2)(p15; q33q36), and that the boy has carried an abnormal chromosome 11 derived from the maternal translocation. The karyotype of the boy was ascertained as 46, XY, ish der(11)ins(11; 2)(p15; q33q36)mat.@*Conclusion@#SNP-array combined with G-banding and FISH can delineate the cryptic translocation and is valuable for the assessment of recurrence risk for subsequent pregnancies.

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