Evidence map›Paper›PMID 39528574›Full record

ArticleScientific reports2024

Trio-whole exome sequencing reveals the importance of de novo variants in children with intellectual disability and developmental delay.

Chengyan Li, You Wang, Cizheng Zeng, Binglong Huang, Yinhui Chen, Chupeng Xue, Ling Liu, Shiwen Rong, Yongwen Lin

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In one paragraph

Article in Scientific reports, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
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15citing papers in PubMed, 2 pooled it
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1 · What the graph read from it

What it found

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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

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3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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4 · The record

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5 · Who and what money

Authors and funding

9 authors.

Chengyan LiDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
You WangDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
Cizheng ZengDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
Binglong HuangDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
Yinhui ChenDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
Chupeng XueDepartment of Pediatrics, Shantou Central Hospital, ShanTou, 515000, Guangdong Province, People's Republic of China.
Ling LiuDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
Shiwen RongDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China.
Yongwen LinDepartment of Pediatrics, Affiliated Hospital of Guangdong Medical University, No. 57, Renmin Avenue (South), Xiashan, Zhanjiang, 524000, Guangdong Province, People's Republic of China. fylinywen@163.com.

Funding

Affiliated Hospital of Guangdong Medical University Clinical Research Program LCYJ2020DL01
6 · The paper itself

Abstract

Understanding the genetic basis of developmental delay (DD) and intellectual disability (ID) remains a considerable clinical challenge. This study evaluated the clinical application of trio whole exome sequencing (WES) in children diagnosed with DD/ID. The study comprised 173 children with unexplained DD/ID. The participants underwent trio-WES and their demographic, clinical, and genetic characteristics were evaluated. Based on their clinical features, the participants were classified into two groups for further analysis: a syndromic DD/ID group and a non-syndromic DD/ID group. The genetic diagnostic yield of the 173 children diagnosed with DD/ID was 49.7% (86/173). This included 58 pathogenic or likely pathogenic single nucleotide variants (SNVs) in 41 genes identified across 54 individuals (31.2%) through trio-WES. Among these, 22 SNVs had not been previously reported. Additionally, 30 copy number variations (CNVs) were detected in 36 individuals (20.8%). The diagnostic yield in the syndromic DD/ID group was higher than that in the non-syndromic DD/ID group (57.8% vs. 47.2%, P < 0.001). Within the syndromic DD/ID subgroup, the diagnostic yield of the DD/ID with epilepsy subgroup (83.9%) was significantly higher than those of the other subgroups (P < 0.001). Based on the analysis of the individuals' clinical phenotypes, the individuals with facial dysmorphism shown a higher diagnostic yield (68.2%, P < 0.001). The diagnostic yield of SNVs was higher in the individuals with DD/ID accompanied by epilepsy, whereas the diagnostic yield of CNVs was higher in the DD/ID without epilepsy group. Similarly, the diagnostic yield of de novo SNVs was higher in the DD/ID with epilepsy group, while the diagnostic yield of de novo CNVs was higher in the DD/ID without epilepsy group (all P < 0.001). Trio-WES is a crucial tool for the genetic diagnosis of DD/ID, demonstrating a diagnostic yield of up to 49.7%. De novo variants in autosomal dominant genes are significant contributors to DD/ID, particularly in non-consanguineous families.

Indexed as

Developmental DisabilitiesDNA Copy Number VariationsExome SequencingIntellectual DisabilityAdolescentChildChild, PreschoolFemaleGenetic Predisposition to DiseaseHumansInfantMalePolymorphism, Single NucleotideDe novo variantDevelopmental delayIntellectual disabilityTrio-whole exome sequencing

Identifiers

PMID39528574
PMCPMC11555314

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.