Human GeneticsPub Date : 2024-03-23DOI: 10.1007/s00439-023-02638-x
S Zucca, G Nicora, F De Paoli, M G Carta, R Bellazzi, P Magni, E Rizzo, I Limongelli
{"title":"An AI-based approach driven by genotypes and phenotypes to uplift the diagnostic yield of genetic diseases.","authors":"S Zucca, G Nicora, F De Paoli, M G Carta, R Bellazzi, P Magni, E Rizzo, I Limongelli","doi":"10.1007/s00439-023-02638-x","DOIUrl":"https://doi.org/10.1007/s00439-023-02638-x","url":null,"abstract":"<p><p>Identifying disease-causing variants in Rare Disease patients' genome is a challenging problem. To accomplish this task, we describe a machine learning framework, that we called \"Suggested Diagnosis\", whose aim is to prioritize genetic variants in an exome/genome based on the probability of being disease-causing. To do so, our method leverages standard guidelines for germline variant interpretation as defined by the American College of Human Genomics (ACMG) and the Association for Molecular Pathology (AMP), inheritance information, phenotypic similarity, and variant quality. Starting from (1) the VCF file containing proband's variants, (2) the list of proband's phenotypes encoded in Human Phenotype Ontology terms, and optionally (3) the information about family members (if available), the \"Suggested Diagnosis\" ranks all the variants according to their machine learning prediction. This method significantly reduces the number of variants that need to be evaluated by geneticists by pinpointing causative variants in the very first positions of the prioritized list. Most importantly, our approach proved to be among the top performers within the CAGI6 Rare Genome Project Challenge, where it was able to rank the true causative variant among the first positions and, uniquely among all the challenge participants, increased the diagnostic yield of 12.5% by solving 2 undiagnosed cases.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140193639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-19DOI: 10.1007/s00439-024-02653-6
Yingdong Song, Tao Shen, Huihui Sun, Xiangting Wang
{"title":"Genome-wide analyses reveal the regulatory roles of DNA methylation-regulated alternative promoter transcripts in breast cancer","authors":"Yingdong Song, Tao Shen, Huihui Sun, Xiangting Wang","doi":"10.1007/s00439-024-02653-6","DOIUrl":"https://doi.org/10.1007/s00439-024-02653-6","url":null,"abstract":"<p>A certain proportion of genes are regulated by multiple, distinct promoters, revealing a dynamic landscape of the cancer transcriptome. However, the contribution of alternative promoters (APs) in breast cancer (BRCA) remains largely unexplored. Here, we identified 3654 genes with multiple promoters in BRCA patients, and 53 of them could generate distinct AP transcripts that are dysregulated and prognosis-related in BRCA, namely prognosis-related dysregulated AP (prdeAP) transcripts. Interestingly, when we searched for the genomic signatures of these prdeAP genes, we found that the promoter regions of 92% of the prdeAP genes were enriched with abundant DNA methylation signals. Through further bioinformatic analysis and experimental validation, we showed that AP selections of <i>TANK</i>, <i>UNKL</i>, <i>CCL28</i>, and <i>MAP1LC3A</i> were regulated by DNA methylation upon their corresponding promoter regions. Functionally, by overexpressing AP variants of <i>TANK</i>, we found that <i>TANK|55731</i> could dramatically suppress MDA-MB-231 cell proliferation and migration. Meanwhile, pan-cancer survival analyses suggested that AP variants of <i>TANK</i> provided more accurate prognostic predictive ability than <i>TANK</i> gene in a variety of tumor types, including BRCA. Together, by uncovering the DNA methylation-regulated AP transcripts with tumor prognostic features, our work revealed a novel layer of regulators in BRCA progression and provided potential targets that served as effective biomarkers for anti-BRCA treatment.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":"26 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140168079","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-14DOI: 10.1007/s00439-024-02650-9
{"title":"Novel compound heterozygous variants in FANCI cause premature ovarian insufficiency","authors":"","doi":"10.1007/s00439-024-02650-9","DOIUrl":"https://doi.org/10.1007/s00439-024-02650-9","url":null,"abstract":"<h3>Abstract</h3> <p>Premature ovarian insufficiency (POI) is a common reproductive aging disorder due to a dramatic decline of ovarian function before 40 years of age. Accumulating evidence reveals that genetic defects, particularly those related to DNA damage response, are a crucial contributing factor to POI. We have demonstrated that the functional Fanconi anemia (FA) pathway maintains the rapid proliferation of primordial germ cells to establish a sufficient reproductive reserve by counteracting replication stress, but the clinical implications of this function in human ovarian function remain to be established. Here, we screened the <em>FANCI</em> gene, which encodes a key component for FA pathway activation, in our whole-exome sequencing database of 1030 patients with idiopathic POI, and identified two pairs of novel compound heterozygous variants, c.[97C > T];[1865C > T] and c.[158-2A > G];[c.959A > G], in two POI patients, respectively. The missense variants did not alter FANCI protein expression and nuclear localization, apart from the variant c.158-2A > G causing abnormal splicing and leading to a truncated mutant p.(S54Pfs*5). Furthermore, the four variants all diminished FANCD2 ubiquitination levels and increased DNA damage under replication stress, suggesting that the <em>FANCI</em> variants impaired FA pathway activation and replication stress response. This study first links replication stress response defects with the pathogenesis of human POI, providing a new insight into the essential roles of the FA genes in ovarian function.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":"72 1","pages":""},"PeriodicalIF":5.3,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140126598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"STEAP3 promotes colon cancer cell proliferation and migration via regulating histone acetylation.","authors":"Jinjuan Lv, Xiaoqian Liu, Zhiwei Sun, Jianfeng Gao, Xiaoqi Yu, Mengyan Zhang, Zhenyu Zhang, Shuangyi Ren, Yunfei Zuo","doi":"10.1007/s00439-024-02646-5","DOIUrl":"10.1007/s00439-024-02646-5","url":null,"abstract":"<p><p>Colorectal cancer (CRC) is the third most prevalent diagnosed cancer in men and second most prevalent cancer in women. H3K27ac alterations are more commonly than gene mutations in colorectal cancer. Most colorectal cancer genes have significant H3K27ac changes, which leads to an over-expression disorder in gene transcription. Over-expression of STEAP3 is involved in a variety of tumors, participating in the regulation of cancer cell proliferation and migration. The purpose of this work is to investigate the role of STEAP3 in the regulation of histone modification (H3K27ac) expression in colon cancer. Bioinformatic ChIP-seq, ChIP-qPCR and ATAC-seq were used to analyze the histone modification properties and gene accessibility of STEAP3. Western blot and qRT-PCR were used to evaluate relative protein and gene expression, respectively. CRISPR/Cas9 technology was used to knockout STEAP3 on colon cancer cells to analyze the effect of ATF3 on STEAP3. STEAP3 was over-expressed in colon cancer and associated with higher metastases and more invasive and worse stage of colon cancer. ChIP-seq and ChIP-qPCR analyses revealed significant enrichment of H3K27ac in the STEAP3 gene. In addition, knocking down STEAP3 significantly inhibits colon cancer cell proliferation and migration and down-regulates H3K27ac expression. ChIP-seq found that ATF3 is enriched in the STEAP3 gene and CRISPR/Cas9 technology used for the deletion of the ATF3 binding site suppresses the expression of STEAP3. Over-expression of STEAP3 promotes colon cancer cell proliferation and migration. Mechanical studies have indicated that H3K27ac and ATF3 are significantly enriched in the STEAP3 gene and regulate the over-expression of STEAP3.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"343-355"},"PeriodicalIF":5.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140119343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-01Epub Date: 2024-03-18DOI: 10.1007/s00439-024-02658-1
Xueyuan Liu, Chengliang Yang, Xiaohui Chen, Xiaolong Han, Hong Liu, Xingkun Zhang, Quyi Xu, Xingyi Yang, Changhui Liu, Ling Chen, Chao Liu
{"title":"A novel 193-plex MPS panel integrating STRs and SNPs highlights the application value of forensic genetics in individual identification and paternity testing.","authors":"Xueyuan Liu, Chengliang Yang, Xiaohui Chen, Xiaolong Han, Hong Liu, Xingkun Zhang, Quyi Xu, Xingyi Yang, Changhui Liu, Ling Chen, Chao Liu","doi":"10.1007/s00439-024-02658-1","DOIUrl":"10.1007/s00439-024-02658-1","url":null,"abstract":"<p><p>Massively parallel sequencing (MPS) has emerged as a promising technology for targeting multiple genetic loci simultaneously in forensic genetics. Here, a novel 193-plex panel was designed to target 28 A-STRs, 41 Y-STRs, 21 X-STRs, 3 sex-identified loci, and 100 A-SNPs by employing a single-end 400 bp sequencing strategy on the MGISEQ-2000™ platform. In the present study, a series of validations and sequencing of 1642 population samples were performed to evaluate the overall performance of the MPS-based panel and its practicality in forensic application according to the SWGDAM guidelines. In general, the 193-plex markers in our panel showed good performance in terms of species specificity, stability, and repeatability. Compared to commercial kits, this panel achieved 100% concordance for standard gDNA and 99.87% concordance for 14,560 population genotypes. Moreover, this panel detected 100% of the loci from 0.5 ng of DNA template and all unique alleles at a 1:4 DNA mixture ratio (0.2 ng minor contributor), and the applicability of the proposed approach for tracing and degrading DNA was further supported by case samples. In addition, several forensic parameters of STRs and SNPs were calculated in a population study. High CPE and CPD values greater than 0.9999999 were clearly demonstrated and these results could be useful references for the application of this panel in individual identification and paternity testing. Overall, this 193-plex MPS panel has been shown to be a reliable, repeatable, robust, inexpensive, and powerful tool sufficient for forensic practice.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"371-383"},"PeriodicalIF":5.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140158051","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-01Epub Date: 2024-03-07DOI: 10.1007/s00439-024-02647-4
Elias Oxman, Huili Li, Hong-Yan Wang, Irene E Zohn
{"title":"Identification and functional analysis of rare HECTD1 missense variants in human neural tube defects.","authors":"Elias Oxman, Huili Li, Hong-Yan Wang, Irene E Zohn","doi":"10.1007/s00439-024-02647-4","DOIUrl":"10.1007/s00439-024-02647-4","url":null,"abstract":"<p><p>Neural tube defects (NTDs) are severe malformations of the central nervous system that arise from failure of neural tube closure. HECTD1 is an E3 ubiquitin ligase required for cranial neural tube closure in mouse models. NTDs in the Hectd1 mutant mouse model are due to the failure of cranial mesenchyme morphogenesis during neural fold elevation. Our earlier research has linked increased extracellular heat shock protein 90 (eHSP90) secretion to aberrant cranial mesenchyme morphogenesis in the Hectd1 model. Furthermore, overexpression of HECTD1 suppresses stress-induced eHSP90 secretion in cell lines. In this study, we report the identification of five rare HECTD1 missense sequence variants in NTD cases. The variants were found through targeted next-generation sequencing in a Chinese cohort of 352 NTD cases and 224 ethnically matched controls. We present data showing that HECTD1 is a highly conserved gene, extremely intolerant to loss-of-function mutations and missense changes. To evaluate the functional consequences of NTD-associated missense variants, functional assays in HEK293T cells were performed to examine protein expression and the ability of HECTD1 sequence variants to suppress eHSP90 secretion. One NTD-associated variant (A1084T) had significantly reduced expression in HEK293T cells. All five NTD-associated variants (p.M392V, p.T801I, p.I906V, p.A1084T, and p.P1835L) reduced regulation of eHSP90 secretion by HECTD1, while a putative benign variant (p.P2474L) did not. These findings are the first association of HECTD1 sequence variation with NTDs in humans.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"263-277"},"PeriodicalIF":5.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11043113/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140049314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-01Epub Date: 2024-02-23DOI: 10.1007/s00439-024-02644-7
Marina Sanchez-Flores, Marc Corral-Juan, Esther Gasch-Navalón, Davide Cirillo, Ivelisse Sanchez, Antoni Matilla-Dueñas
{"title":"Novel genotype-phenotype correlations, differential cerebellar allele-specific methylation, and a common origin of the (ATTTC)<sub>n</sub> insertion in spinocerebellar ataxia type 37.","authors":"Marina Sanchez-Flores, Marc Corral-Juan, Esther Gasch-Navalón, Davide Cirillo, Ivelisse Sanchez, Antoni Matilla-Dueñas","doi":"10.1007/s00439-024-02644-7","DOIUrl":"10.1007/s00439-024-02644-7","url":null,"abstract":"<p><p>Spinocerebellar ataxia subtype 37 (SCA37) is a rare disease originally identified in ataxia patients from the Iberian Peninsula with a pure cerebellar syndrome. SCA37 patients carry a pathogenic intronic (ATTTC)n repeat insertion flanked by two polymorphic (ATTTT)n repeats in the Disabled-1 (DAB1) gene leading to cerebellar dysregulation. Herein, we determine the precise configuration of the pathogenic 5'(ATTTT)n-(ATTTC)n-3'(ATTTT)n SCA37 alleles by CRISPR-Cas9 and long-read nanopore sequencing, reveal their epigenomic signatures in SCA37 lymphocytes, fibroblasts, and cerebellar samples, and establish new molecular and clinical correlations. The 5'(ATTTT)n-(ATTTC)n-3'(ATTTT)n pathogenic allele configurations revealed repeat instability and differential methylation signatures. Disease age of onset negatively correlated with the (ATTTC)n, and positively correlated with the 3'(ATTTT)n. Geographic origin and gender significantly correlated with age of onset. Furthermore, significant predictive regression models were obtained by machine learning for age of onset and disease evolution by considering gender, the (ATTTC)n, the 3'(ATTTT)n, and seven CpG positions differentially methylated in SCA37 cerebellum. A common 964-kb genomic region spanning the (ATTTC)n insertion was identified in all SCA37 patients analysed from Portugal and Spain, evidencing a common origin of the SCA37 mutation in the Iberian Peninsula originating 859 years ago (95% CI 647-1378). In conclusion, we demonstrate an accurate determination of the size and configuration of the regulatory 5'(ATTTT)n-(ATTTC)n-3'(ATTTT)n repeat tract, avoiding PCR bias amplification using CRISPR/Cas9-enrichment and nanopore long-read sequencing, resulting relevant for accurate genetic diagnosis of SCA37. Moreover, we determine novel significant genotype-phenotype correlations in SCA37 and identify differential cerebellar allele-specific methylation signatures that may underlie DAB1 pathogenic dysregulation.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"211-232"},"PeriodicalIF":5.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11043136/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139939950","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-01Epub Date: 2024-03-22DOI: 10.1007/s00439-024-02643-8
Alberto M Parra-Perez, Alvaro Gallego-Martinez, Jose A Lopez-Escamez
{"title":"An overload of missense variants in the OTOG gene may drive a higher prevalence of familial Meniere disease in the European population.","authors":"Alberto M Parra-Perez, Alvaro Gallego-Martinez, Jose A Lopez-Escamez","doi":"10.1007/s00439-024-02643-8","DOIUrl":"10.1007/s00439-024-02643-8","url":null,"abstract":"<p><p>Meniere disease is a complex inner ear disorder with significant familial aggregation. A differential prevalence of familial MD (FMD) has been reported, being 9-10% in Europeans compared to 6% in East Asians. A broad genetic heterogeneity in FMD has been described, OTOG being the most common mutated gene, with a compound heterozygous recessive inheritance. We hypothesize that an OTOG-related founder effect may explain the higher prevalence of FMD in the European population. Therefore, the present study aimed to compare the allele frequency (AF) and distribution of OTOG rare variants across different populations. For this purpose, the coding regions with high constraint (low density of rare variants) were retrieved in the OTOG coding sequence in Non-Finnish European (NFE).. Missense variants (AF < 0.01) were selected from a 100 FMD patient cohort, and their population AF was annotated using gnomAD v2.1. A linkage analysis was performed, and odds ratios were calculated to compare AF between NFE and other populations. Thirteen rare missense variants were observed in 13 FMD patients, with 2 variants (rs61978648 and rs61736002) shared by 5 individuals and another variant (rs117315845) shared by two individuals. The results confirm the observed enrichment of OTOG rare missense variants in FMD. Furthermore, eight variants were enriched in the NFE population, and six of them were in constrained regions. Structural modeling predicts five missense variants that could alter the otogelin stability. We conclude that several variants reported in FMD are in constraint regions, and they may have a founder effect and explain the burden of FMD in the European population.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"423-435"},"PeriodicalIF":3.8,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11043142/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140193640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-01Epub Date: 2024-03-25DOI: 10.1007/s00439-024-02655-4
Charlotte Herbst, Viktoria Bothe, Meret Wegler, Susanne Axer-Schaefer, Séverine Audebert-Bellanger, Jozef Gecz, Benjamin Cogne, Hagit Baris Feldman, Anselm H C Horn, Anna C E Hurst, Melissa A Kelly, Michael C Kruer, Alina Kurolap, Annie Laquerriere, Megan Li, Paul R Mark, Markus Morawski, Mathilde Nizon, Tomi Pastinen, Tilman Polster, Pascale Saugier-Veber, Jang SeSong, Heinrich Sticht, Jens T Stieler, Isabelle Thifffault, Clare L van Eyk, Pascale Marcorelles, Myriam Vezain-Mouchard, Rami Abou Jamra, Henry Oppermann
{"title":"Heterozygous loss-of-function variants in DOCK4 cause neurodevelopmental delay and microcephaly.","authors":"Charlotte Herbst, Viktoria Bothe, Meret Wegler, Susanne Axer-Schaefer, Séverine Audebert-Bellanger, Jozef Gecz, Benjamin Cogne, Hagit Baris Feldman, Anselm H C Horn, Anna C E Hurst, Melissa A Kelly, Michael C Kruer, Alina Kurolap, Annie Laquerriere, Megan Li, Paul R Mark, Markus Morawski, Mathilde Nizon, Tomi Pastinen, Tilman Polster, Pascale Saugier-Veber, Jang SeSong, Heinrich Sticht, Jens T Stieler, Isabelle Thifffault, Clare L van Eyk, Pascale Marcorelles, Myriam Vezain-Mouchard, Rami Abou Jamra, Henry Oppermann","doi":"10.1007/s00439-024-02655-4","DOIUrl":"10.1007/s00439-024-02655-4","url":null,"abstract":"<p><p>Neurons form the basic anatomical and functional structure of the nervous system, and defects in neuronal differentiation or formation of neurites are associated with various psychiatric and neurodevelopmental disorders. Dynamic changes in the cytoskeleton are essential for this process, which is, inter alia, controlled by the dedicator of cytokinesis 4 (DOCK4) through the activation of RAC1. Here, we clinically describe 7 individuals (6 males and one female) with variants in DOCK4 and overlapping phenotype of mild to severe global developmental delay. Additional symptoms include coordination or gait abnormalities, microcephaly, nonspecific brain malformations, hypotonia and seizures. Four individuals carry missense variants (three of them detected de novo) and three individuals carry null variants (two of them maternally inherited). Molecular modeling of the heterozygous missense variants suggests that the majority of them affect the globular structure of DOCK4. In vitro functional expression studies in transfected Neuro-2A cells showed that all missense variants impaired neurite outgrowth. Furthermore, Dock4 knockout Neuro-2A cells also exhibited defects in promoting neurite outgrowth. Our results, including clinical, molecular and functional data, suggest that loss-of-function variants in DOCK4 probable cause a variable spectrum of a novel neurodevelopmental disorder with microcephaly.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"455-469"},"PeriodicalIF":5.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11043173/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140287302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Human GeneticsPub Date : 2024-03-01Epub Date: 2024-03-13DOI: 10.1007/s00439-024-02645-6
Bing Zeng, Dong Cheng Liu, Jian Guo Huang, Xiao Bo Xia, Bo Qin
{"title":"PdmIRD: missense variants pathogenicity prediction for inherited retinal diseases in a disease-specific manner.","authors":"Bing Zeng, Dong Cheng Liu, Jian Guo Huang, Xiao Bo Xia, Bo Qin","doi":"10.1007/s00439-024-02645-6","DOIUrl":"10.1007/s00439-024-02645-6","url":null,"abstract":"<p><p>Accurate discrimination of pathogenic and nonpathogenic variation remains an enormous challenge in clinical genetic testing of inherited retinal diseases (IRDs) patients. Computational methods for predicting variant pathogenicity are the main solutions for this dilemma. The majority of the state-of-the-art variant pathogenicity prediction tools disregard the differences in characteristics among different genes and treat all types of mutations equally. Since missense variants are the most common type of variation in the coding region of the human genome, we developed a novel missense mutation pathogenicity prediction tool, named Prediction of Deleterious Missense Mutation for IRDs (PdmIRD) in this study. PdmIRD was tailored for IRDs-related genes and constructed with the conditional random forest model. Population frequencies and a newly available prediction tool were incorporated into PdmIRD to improve the performance of the model. The evaluation of PdmIRD demonstrated its superior performance over nonspecific tools (areas under the curves, 0.984 and 0.910) and an existing eye abnormalities-specific tool (areas under the curves, 0.975 and 0.891). We also demonstrated the submodel that used a smaller gene panel further slightly improved performance. Our study provides evidence that a disease-specific model can enhance the prediction of missense mutation pathogenicity, especially when new and important features are considered. Additionally, this study provides guidance for exploring the characteristics and functions of the mutated proteins in a greater number of Mendelian disorders.</p>","PeriodicalId":13175,"journal":{"name":"Human Genetics","volume":" ","pages":"331-342"},"PeriodicalIF":5.3,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140119287","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}