Genetic architecture in neonatal intensive care unit patients with congenital heart defects: a retrospective study from the China Neonatal Genomes Project

新生儿重症监护室 外显子组测序 动脉导管 医学 儿科 回顾性队列研究 外显子组 队列 医学遗传学 队列研究 内科学 遗传学 表型 生物 基因
作者
Huijun Wang,Feifan Xiao,Yanyan Qian,Bingbing Wu,Xinran Dong,Yulan Lu,Guoqiang Cheng,Laishuan Wang,Kai Yan,Lin Yang,Liping Chen,Wenqing Kang,Long Li,Xinnian Pan,Qiufen Wei,Deyi Zhuang,Dongmei Chen,Zhaoqing Yin,Ling Yang,Qi Ni,Renchao Liu,Gang Li,Ping Zhang,Xu Li,Xiaomin Peng,Yao Wang,Huiyao Chen,Xiaojing Ma,Fang Liu,Yun Cao,Guoying Huang,Wenhao Zhou
出处
期刊:Journal of Medical Genetics [BMJ]
卷期号:60 (3): 247-253 被引量:8
标识
DOI:10.1136/jmedgenet-2021-108354
摘要

Background Congenital heart defects (CHDs) are the most common type of birth defects. The genetic aetiology of CHD is complex and incompletely understood. The overall distribution of genetic causes in patients with CHD from neonatal intensive care units (NICUs) needs to be studied. Methods CHD cases were extracted from the China Neonatal Genomes Project (2016–2021). Next-generation sequencing results and medical records were retrospectively evaluated to note the frequency of genetic diagnosis and the respective patient outcomes. Results In total, 1795 patients were included. The human phenotype ontology term of atrial septal defect, patent ductus arteriosus and ventricular septal defect account for a large portion of the CHD subtype. Co-occurring extracardiac anomalies were observed in 35.1% of patients. 269 of the cases received genetic diagnoses that could explain the phenotype of CHDs, including 172 copy number variations and 97 pathogenic variants. The detection rate of trio-whole-exome sequencing was higher than clinical exome sequencing (21.8% vs 14.5%, p<0.05). Further follow-up analysis showed the genetic diagnostic rate was higher in the deceased group than in the surviving group (29.0% vs 11.9%, p<0.05). Conclusion This is the largest cohort study to explore the genetic spectrum of patients with CHD in the NICU in China. Our findings may benefit future work on improving genetic screening and counselling for NICU patients with CHD.
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