Clinical and genetic analysis of a child with 2q37 deletion syndrome resulting from a translocation involving chromosome satellite.
10.3760/cma.j.cn511374-20200219-00090
- Author:
Zhenhua ZHANG
1
;
Shaoli ZHAO
;
Jijun SONG
;
Rui LI
;
Yaodong ZHANG
;
Dongxiao LI
Author Information
1. Henan Provincial Key Laboratory for Children's Genetic and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Provincial Children's Hospital, Zhengzhou Children's Hospital, Zhengzhou, Henan 450018, China. li-dongxiao@sina.com.
- Publication Type:Journal Article
- MeSH:
Child;
Chromosome Deletion;
Chromosomes;
Chromosomes, Human, Pair 2;
Humans;
In Situ Hybridization, Fluorescence;
Karyotyping;
Male;
Translocation, Genetic
- From:
Chinese Journal of Medical Genetics
2021;38(4):373-375
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVE:To carry out cyto- and molecular genetic testing for a child featuring facial dysmorphism and attention deficit and hyperactive disorder.
METHODS:The child was subjected to routine peripheral blood lymphocyte chromosomal karyotyping, fluorescence in situ hybridization (FISH) and single nucleotide polymorphism array (SNP-array) analyses.
RESULTS:The child's facial dysmorphism included low-set ears, curly ear auricle, protuberance of eyebrow arch, nostril notch, short and flat philtrum and thin upper lip. SNP-array revealed that he has carried a 4.883 Mb deletion at 2q37. His chromosomal karyotype was ultimately determined as 45, XY, der(2;21) (2pter→ 2q37.3::21p13→ 21p10::20p10→ 20pter), der(20) (21qter→ 21q10::20q10→ 20qter).
CONCLUSION:A rare case of 2q37 deletion syndrome involving three chromosomes was discovered. Combined use of various cyto- and molecular genetic techniques is crucial for the diagnosis of chromosomal abnormalities with complex structures.
