An infant with trisomy 9p and partial trisomy 12p derived from maternal balanced translocation: A case report and literature review

We present here, a case of a neonate with an unbalanced chromosomal translocation due to a maternal chromosomal translocation carriage that resulted in the presence of trisomy 9p combined with a partial trisomy 12p. Karyotype analysis was performed using conventional cytogenetic chromosomal analysis...

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Bibliographic Details
Main Authors: Shengjin Ming, Zhumei Zhou, Yao Huang, Ying Huang, Jinping Zhong, Yingli Li
Format: Article
Language:English
Published: SAGE Publishing 2024-11-01
Series:Journal of International Medical Research
Online Access:https://doi.org/10.1177/03000605241300093
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Summary:We present here, a case of a neonate with an unbalanced chromosomal translocation due to a maternal chromosomal translocation carriage that resulted in the presence of trisomy 9p combined with a partial trisomy 12p. Karyotype analysis was performed using conventional cytogenetic chromosomal analysis using the GTG-banding technique. The mother was a carrier of a balanced chromosomal translocation of 46, XX, t(9;12)(q13;p11.2), that resulted in an unbalanced translocation of the offspring, who had a karyotype 47, XX, +der(9)t(9;12)(q13;p11.2)dmat, featuring a combined trisomy of 9q13→9pter region and 12p11.2→12pter region. Clinical phenotype of the infant included cephalo-facial deformity, growth retardation, hypertonia, opisthotonus, laryngeal wheezing, foot deformity, and congenital heart disease.
ISSN:1473-2300