Association of assisted reproductive technology, germline de novo mutations and congenital heart defects in a prospective birth cohort study.

Abstract

Emerging evidence suggests that children conceived through assisted reproductive technology (ART) have a higher risk of congenital heart defects (CHDs) even when there is no family history. De novo mutation (DNM) is a well-known cause of sporadic congenital diseases; however, whether ART procedures increase the number of germline DNM (gDNM) has not yet been well studied. Here, we performed whole-genome sequencing of 1137 individuals from 160 families conceived through ART and 205 families conceived spontaneously. Children conceived via ART carried 4.59 more gDNMs than children conceived spontaneously, including 3.32 paternal and 1.26 maternal DNMs, after correcting for parental age at conception, cigarette smoking, alcohol drinking, and exercise behaviors. Paternal DNMs in offspring conceived via ART are characterized by C>T substitutions at CpG sites, which potentially affect protein-coding genes and are significantly associated with the increased risk of CHD. In addition, the accumulation of non-coding functional mutations was independently associated with CHD and 87.9% of the mutations were originated from the father. Among ART offspring, infertility of the father was associated with elevated paternal DNMs; usage of both recombinant and urinary follicle-stimulating hormone and high-dosage human chorionic gonadotropin trigger was associated with an increase of maternal DNMs. In sum, the increased gDNMs in offspring conceived by ART were primarily originated from fathers, indicating that ART itself may not be a major reason for the accumulation of gDNMs. Our findings emphasize the importance of evaluating the germline status of the fathers in families with the use of ART.

• Authors: Cheng Wang, Hong Lv, Xiufeng Ling, Hong Li, Feiyang Diao, Juncheng Dai, Jiangbo Du, Ting Chen, Qi Xi, Yang Zhao, Kun Zhou, Bo Xu, Xiumei Han, Xiaoyu Liu, Meijuan Peng, Congcong Chen, Shiyao Tao, Lei Huang, Cong Liu, Mingyang Wen, Yangqian Jiang, Tao Jiang, Chuncheng Lu, Wei Wu, Di Wu, Minjian Chen, Yuan Lin, Xuejiang Guo, Ran Huo, Jiayin Liu, Hongxia Ma, Guangfu Jin, Yankai Xia, Jiahao Sha, Hongbing Shen, Zhibin Hu
• Journal: Cell research (Cell Res) Vol. 31 Issue 8 Pg. 919-928 (08 2021) ISSN: 1748-7838 [Electronic] England
• PMID: 34108666 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
• Copyright: © 2021. The Author(s), under exclusive licence to Center for Excellence in Molecular Cell Science, CAS.

Topics

• Birth Cohort
• Cohort Studies
• Germ Cells
• Heart Defects, Congenital (genetics)
• Humans
• Mutation
• Prospective Studies
• Reproductive Techniques, Assisted (adverse effects)