4号染色体4q21/q22缺失综合征1例报告  

One case of chromosome 4q21/22 deletion syndrome

作　　者：杨宁[1] 张志玲[1] 王新刚[1] 高雁翎[1] 

机构地区：[1]德州市人民医院,山东德州253014

出　　处：《临床儿科杂志》2016年第5期360-362,共3页Journal of Clinical Pediatrics

摘　　要：目的提高对4q21/q22缺失综合征的临床和基因特征的认识。方法回顾性分析1例有特殊面容及体格智力发育迟缓患儿的临床资料及基因检测结果。结果患儿,女,2个月。表现为喂养困难,发育迟缓,新生儿期肌张力低下,头大,前额及枕部突出,小手足;合并先天性心脏病。应用染色体微阵列芯片分析技术发现患儿4q21.21q22.2区域有一缺失,缺失片段大小约15.26 Mb,至少包含76个基因,确诊为4q21/q22缺失综合征。结论患儿有典型面容特征,发育迟缓,伴其他系统累及时应考虑4q21/q22缺失综合征可能,染色体芯片检测技术有助于明确诊断。Objective To enhance the understanding of clinical characteristics and genetic testing of chromosome 4q21/q22 deletion syndrome. Methods Chromosomal microarray analysis was used to detect genetic change in a child with special facial appearance and development delay. Results A 15.26-Mb deletion containing 76 geinges in chromosome 4q21.21q22.2 was identiifed. Thus, this girl was diagnosed as chromosome 4q21/q22 deletion syndrome. Conclusions Chromosome 4q21/q22 deletion syndrome has varied clinical manifestations including typical characteristics (such as absolute or relative macrocephaly, megalencephaly with a characteristic head shape and facial appearance, profound hypotonia, small hands and feet, short limbs, feeding difficulties), mental retardation/severe developmental delay, and other system abnormalities ( such as congenital heart disease, seizure, kidney cysts, etc). The diagnosis of chromosome 4q21/q22 deletion syndrome relies on chromosomal microarray analysis.

关 键 词：4号染色体长臂缺失综合征 生长发育迟缓 染色体微阵列芯片分析 

分 类 号：R725.9[医药卫生—儿科]