medRxiv - Genetic and Genomic Medicine最新文献

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Uncovering the genetic underpinnings for different psychiatric disorder combinations 揭示不同精神疾病组合的遗传基础
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-29 DOI: 10.1101/2024.08.29.24312761
Liangying Yin, Menghui Liu, Yujia Shi, Ruoyu Zhang, Simon Sai-Yu Lui, Hon-Cheong So
{"title":"Uncovering the genetic underpinnings for different psychiatric disorder combinations","authors":"Liangying Yin, Menghui Liu, Yujia Shi, Ruoyu Zhang, Simon Sai-Yu Lui, Hon-Cheong So","doi":"10.1101/2024.08.29.24312761","DOIUrl":"https://doi.org/10.1101/2024.08.29.24312761","url":null,"abstract":"Psychiatric disorders are highly heterogeneous, and it is clinically meaningful to distinguish psychiatric disorders by the presence or absence of a specific comorbid condition. In this study, we employed a recently developed algorithm (CombGWAS) to decipher the genetic basis of psychiatric disorder combinations. The focus was on comorbidities and combinations of disorders, such as major depressive disorder(MDD) with and without schizophrenia(SCZ), which can be considered as two ‘subtypes’ of MDD. We also studied psychiatric disorders comorbid with obesity as disease subtypes.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192172","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Substantial role of rare inherited variation in individuals with developmental disorders 罕见遗传变异在发育障碍患者中的重要作用
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-29 DOI: 10.1101/2024.08.28.24312746
Kaitlin E. Samocha, V. Kartik Chundru, Jack M. Fu, Eugene J. Gardner, Petr Danecek, Emilie M. Wigdor, Daniel S. Malawsky, Sarah J. Lindsay, Patrick Campbell, Tarjinder Singh, Ruth Y. Eberhardt, Giuseppe Gallone, Caroline F. Wright, Hilary C. Martin, Helen V. Firth, Matthew E. Hurles
{"title":"Substantial role of rare inherited variation in individuals with developmental disorders","authors":"Kaitlin E. Samocha, V. Kartik Chundru, Jack M. Fu, Eugene J. Gardner, Petr Danecek, Emilie M. Wigdor, Daniel S. Malawsky, Sarah J. Lindsay, Patrick Campbell, Tarjinder Singh, Ruth Y. Eberhardt, Giuseppe Gallone, Caroline F. Wright, Hilary C. Martin, Helen V. Firth, Matthew E. Hurles","doi":"10.1101/2024.08.28.24312746","DOIUrl":"https://doi.org/10.1101/2024.08.28.24312746","url":null,"abstract":"While the role of <em>de novo</em> and recessively-inherited coding variation in risk for rare developmental disorders (DDs) has been well established, the contribution of damaging variation dominantly-inherited from parents is less explored. Here, we investigated the contribution of rare coding variants to DDs by analyzing 13,452 individuals with DDs, 18,613 of their family members, and 3,943 controls using a combination of family-based and case/control analyses. In line with previous studies of other neuropsychiatric traits, we found a significant burden of rare (allele frequency &lt; 1×10<sup>-5</sup>) predicted loss-of-function (pLoF) and damaging missense variants, the vast majority of which are inherited from apparently unaffected parents. These predominantly inherited burdens are strongest in DD-associated genes or those intolerant of pLoF variation in the general population, however we estimate that ∼10% of the excess of these variants in DD cases is found within the DD-associated genes, implying many more risk loci are yet to be identified. We found similar, but attenuated, burdens when comparing the unaffected parents of individuals with DDs to controls, indicating that parents have elevated risk of DDs due to these rare variants, which are overtransmitted to their affected children. We estimate that 6-8.5% of the population attributable risk for DDs are due to rare pLoF variants in those genes intolerant of pLoF variation in the general population. Finally, we apply a Bayesian framework to combine evidence from these analyses of rare, mostly-inherited variants with prior <em>de novo</em> mutation burden analyses to highlight an additional 25 candidate DD- associated genes for further follow up.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192171","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Blood DNA methylation levels of the oxytocin promoter predict conversion from mild cognitive impairment to dementia in females within a clinical cohort of cognitive complaints 血液中催产素启动子 DNA 甲基化水平可预测认知障碍临床队列中女性从轻度认知障碍转变为痴呆症的情况
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-29 DOI: 10.1101/2024.08.28.24312742
Philippos Koulousakis, Rick Reijnders, Inez Ramakers, Frans Verhey, Tim Vanmierlo, Daniël L.A. van den Hove, Renzo J.M. Riemens
{"title":"Blood DNA methylation levels of the oxytocin promoter predict conversion from mild cognitive impairment to dementia in females within a clinical cohort of cognitive complaints","authors":"Philippos Koulousakis, Rick Reijnders, Inez Ramakers, Frans Verhey, Tim Vanmierlo, Daniël L.A. van den Hove, Renzo J.M. Riemens","doi":"10.1101/2024.08.28.24312742","DOIUrl":"https://doi.org/10.1101/2024.08.28.24312742","url":null,"abstract":"Recent studies have highlighted the role of oxytocin (OXT) in Alzheimer’s disease (AD) dementia and demonstrated its potential as a therapeutic target to reverse cognitive impairment and mitigate AD pathology. Epigenetic dysregulation of <em>OXT</em> has been identified in brain tissue from AD patients, and DNA methylation levels of the exact same locus in the blood of healthy aged individuals have shown predictive biomarker value for conversion to AD. Building on these insights, we investigated the DNA methylation status of the <em>OXT</em> promoter in blood in a prospective cohort of consecutive patients from the BioBank Alzheimer Center Limburg (BBACL). This cohort included males and females suffering from subjective cognitive decline (SCD), mild cognitive impairment (MCI), and dementia. Our findings revealed that DNA methylation levels of the <em>OXT</em> promoter at baseline predict the conversion from MCI to dementia in female participants. In addition to discovering differences in the <em>OXT</em> promoter related to sex, we also observed alterations associated with aging, alcohol consumption, and smoking. Overall, our findings underscore the implications of <em>OXT</em> and its DNA methylation changes in blood within the context of dementia.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"79 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Genetic modifiers and ascertainment drive variable expressivity of complex disorders 遗传修饰因子和确定性驱动复杂疾病的可变表达性
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-28 DOI: 10.1101/2024.08.27.24312158
Matthew Jensen, Corrine Smolen, Anastasia Tyryshkina, Lucilla Pizzo, Deepro Banerjee, Matthew Oetjens, Hermela Shimelis, Cora Taylor, Vijay Kumar Pounraja, Hyebin Song, Laura Rohan, Emily Huber, Laila El Khattabi, Ingrid van de Laar, Rafik Tadros, Connie Bezzina, Marjon van Slegtenhorst, Janneke Kammeraad, Paolo Prontera, Jean-Hubert Caberg, Harry Fraser, Siddhartha Banka, Anke Van Dijck, Charles Schwartz, Els Voorhoeve, Patrick Callier, Anne-Laure Mosca-Boidron, Nathalie Marle, Mathilde Lefebvre, Kate Pope, Penny Snell, Amber Boys, Paul J. Lockhart, Myla Ashfaq, Elizabeth McCready, Margaret Nowacyzk, Lucia Castiglia, Ornella Galesi, Emanuela Avola, Teresa Mattina, Marco Fichera, Maria Grazia Bruccheri, Giuseppa Maria Luana Mandara, Francesca Mari, Flavia Privitera, Ilaria Longo, Aurora Curro, Alessandra Renieri, Boris Keren, Perrine Charles, Silvestre Cuinat, Mathilde Nizon, Olivier Pichon, Claire Beneteau, Radka Stoeva, Dominique Martin-Coignard, Sophia Blesson, Cedric Le Caignec, Sandra Mercier, Marie Vincent, Christa Martin, Katrin Mannik, Alexandre Reymond, Laurence Faivre, Erik Sistermans, R. Frank Kooy, David Amor, Corrado Romano, Joris Andreiux, Santhosh Girirajan
{"title":"Genetic modifiers and ascertainment drive variable expressivity of complex disorders","authors":"Matthew Jensen, Corrine Smolen, Anastasia Tyryshkina, Lucilla Pizzo, Deepro Banerjee, Matthew Oetjens, Hermela Shimelis, Cora Taylor, Vijay Kumar Pounraja, Hyebin Song, Laura Rohan, Emily Huber, Laila El Khattabi, Ingrid van de Laar, Rafik Tadros, Connie Bezzina, Marjon van Slegtenhorst, Janneke Kammeraad, Paolo Prontera, Jean-Hubert Caberg, Harry Fraser, Siddhartha Banka, Anke Van Dijck, Charles Schwartz, Els Voorhoeve, Patrick Callier, Anne-Laure Mosca-Boidron, Nathalie Marle, Mathilde Lefebvre, Kate Pope, Penny Snell, Amber Boys, Paul J. Lockhart, Myla Ashfaq, Elizabeth McCready, Margaret Nowacyzk, Lucia Castiglia, Ornella Galesi, Emanuela Avola, Teresa Mattina, Marco Fichera, Maria Grazia Bruccheri, Giuseppa Maria Luana Mandara, Francesca Mari, Flavia Privitera, Ilaria Longo, Aurora Curro, Alessandra Renieri, Boris Keren, Perrine Charles, Silvestre Cuinat, Mathilde Nizon, Olivier Pichon, Claire Beneteau, Radka Stoeva, Dominique Martin-Coignard, Sophia Blesson, Cedric Le Caignec, Sandra Mercier, Marie Vincent, Christa Martin, Katrin Mannik, Alexandre Reymond, Laurence Faivre, Erik Sistermans, R. Frank Kooy, David Amor, Corrado Romano, Joris Andreiux, Santhosh Girirajan","doi":"10.1101/2024.08.27.24312158","DOIUrl":"https://doi.org/10.1101/2024.08.27.24312158","url":null,"abstract":"Variable expressivity of disease-associated variants implies a role for secondary variants that modify clinical features. We assessed the effects of modifier variants towards clinical outcomes of 2,252 individuals with primary variants. Among 132 families with the 16p12.1 deletion, distinct rare and common variant classes conferred risk for specific developmental features, including short tandem repeats for neurological defects and SNVs for microcephaly, while additional disease-associated variants conferred multiple genetic diagnoses. Within disease and population cohorts of 773 individuals with the 16p12.1 deletion, we found opposing effects of secondary variants towards clinical features across ascertainments. Additional analysis of 1,479 probands with other primary variants, such as 16p11.2 deletion and CHD8 variants, and 1,084 without primary variants, showed that phenotypic associations differed by primary variant context and were influenced by synergistic interactions between primary and secondary variants. Our study provides a paradigm to dissect the genomic architecture of complex disorders towards personalized treatment.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"60 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192179","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
COA5 has an essential role in the early stage of mitochondrial complex IV assembly COA5 在线粒体复合体 IV 组装的早期阶段发挥着重要作用
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-28 DOI: 10.1101/2024.08.27.24312374
Jia Xin Tang, Alfredo Cabrera-Orefice, Jana Meisterknecht, Lucie Taylor, Geoffray Monteuuis, Maria Ekman Stensland, Adam Szczepanek, Karen L Stals, James Davison, Langping He, Sila Hopton, Tuula A Nyman, Christopher B Jackson, Angela Pyle, Monika Winter, Ilka Wittig, Robert W Taylor
{"title":"COA5 has an essential role in the early stage of mitochondrial complex IV assembly","authors":"Jia Xin Tang, Alfredo Cabrera-Orefice, Jana Meisterknecht, Lucie Taylor, Geoffray Monteuuis, Maria Ekman Stensland, Adam Szczepanek, Karen L Stals, James Davison, Langping He, Sila Hopton, Tuula A Nyman, Christopher B Jackson, Angela Pyle, Monika Winter, Ilka Wittig, Robert W Taylor","doi":"10.1101/2024.08.27.24312374","DOIUrl":"https://doi.org/10.1101/2024.08.27.24312374","url":null,"abstract":"Pathogenic variants in cytochrome c oxidase assembly factor 5 (COA5), a proposed complex IV (CIV) assembly factor, have been shown to cause clinical mitochondrial disease with two siblings affected by neonatal hypertrophic cardiomyopathy manifesting a rare, homozygous COA5 missense variant (NM_001008215.3: c.157G&gt;C, p.Ala53Pro). The most striking observation in the affected individuals was an isolated impairment in the early stage of mitochondrial CIV assembly. In this study, we report an unrelated family in who we have identified the same COA5 variant with patient-derived fibroblasts and skeletal muscle biopsies replicating an isolated CIV deficiency. A CRISPR/Cas9-edited homozygous COA5 knockout U2OS cell line with similar biochemical profile was generated to interrogate the functional role of the human COA5 protein. Mitochondrial complexome profiling pinpointed a role for COA5 in early CIV assembly, more specifically, its involvement in the stage between MTCO1 maturation and the incorporation of MTCO2. We therefore propose that the COA5 protein plays an essential role for the biogenesis of MTCO2 and its integration into the early CIV assembly intermediate for downstream assembly of the functional holocomplex.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"75 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192177","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Immunological profiles in Lynch syndrome colorectal cancers are not specific to mismatch repair gene defects 林奇综合征结直肠癌的免疫特征与错配修复基因缺陷无关
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-28 DOI: 10.1101/2024.08.27.24311855
Noah C. Helderman, Marieke E. IJsselsteijn, Madalina Cabuta, Manon van der Ploeg, Tom van Wezel, Aysel Ahadova, Matthias Kloor, Hans Morreau, Maartje Nielsen, Noel F.C.C. de Miranda
{"title":"Immunological profiles in Lynch syndrome colorectal cancers are not specific to mismatch repair gene defects","authors":"Noah C. Helderman, Marieke E. IJsselsteijn, Madalina Cabuta, Manon van der Ploeg, Tom van Wezel, Aysel Ahadova, Matthias Kloor, Hans Morreau, Maartje Nielsen, Noel F.C.C. de Miranda","doi":"10.1101/2024.08.27.24311855","DOIUrl":"https://doi.org/10.1101/2024.08.27.24311855","url":null,"abstract":"<strong>Background and aims</strong>: Colorectal carcinomas (CRCs) in patients with Lynch syndrome (LS) exhibit heightened immunogenicity due to mismatch repair deficiency (MMR-d), often resulting in favorable responses to T cell immune checkpoint therapies. Recent studies indicate that the phenotype and genotype of LS-associated CRCs vary depending on the specific MMR gene mutated. Here, we investigated whether the immune profiles of LS-associated CRCs differ based on the MMR gene defects. <strong>Methods</strong>: Tissue material from 18 <em>MLH1</em>-, 16 <em>MSH2</em>-, 40 <em>MSH6</em>-, and 23 <em>PMS2</em>-mutated CRCs and 35 sporadic MMR-d CRCs were included in the study. Imaging mass cytometry (IMC) analysis, along with targeted multiplex immunofluorescence imaging (mIF) and immunohistochemistry, were applied to examine the tumor immune microenvironment, including Human Leukocyte Antigen (HLA) class I and programmed death-ligand 1 (PD-L1) expression. <strong>Results</strong>: Unsupervised hierarchical clustering of cell phenotypes identified by IMC, followed by mIF validation, revealed comparable lymphoid and myeloid cell infiltration levels across CRCs from all MMR groups. Infiltrating T cell levels negatively correlated with the number of mutations at coding microsatellite sequences, particularly in <em>MLH1</em>-mutated CRCs. HLA class I defects were observed in 76% of all CRCs. These defects were more frequently accompanied by β2M defects in hereditary MMR-d CRCs (67%) compared to sporadic MMR-d CRCs (37%), and did not associate with the number of γδ T cells, which were present in CRCs from all MMR groups. PD-L1 expression in tumor cells was only detected in 8% of all CRCs. <strong>Conclusion</strong>: Our findings illustrate that, from an immunological perspective, there is no evidence of differing immunogenic features across MMR defects. This is important to consider when developing preventive vaccine strategies and evaluating immunotherapy for LS patients and those with MMR-d CRCs.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"12 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192209","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Genetic Relationships Between Post-Traumatic Stress Disorder and Its Corresponding Neural Circuit Structures 创伤后应激障碍与相应神经回路结构之间的遗传关系
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-26 DOI: 10.1101/2024.08.25.24312540
Qian Gong, Honggang Lyu, Lijun Kang, Simeng Ma, Nan Zhang, Xin-hui Xie, Enqi Zhou, Zipeng Deng, Jiewei Liu, Zhongchun Liu
{"title":"The Genetic Relationships Between Post-Traumatic Stress Disorder and Its Corresponding Neural Circuit Structures","authors":"Qian Gong, Honggang Lyu, Lijun Kang, Simeng Ma, Nan Zhang, Xin-hui Xie, Enqi Zhou, Zipeng Deng, Jiewei Liu, Zhongchun Liu","doi":"10.1101/2024.08.25.24312540","DOIUrl":"https://doi.org/10.1101/2024.08.25.24312540","url":null,"abstract":"Post-traumatic stress disorder (PTSD) may be linked to abnormalities in neural circuits that facilitate fear learning and memory processes. The precise degree to which this connection is influenced by genetic factors is still uncertain. This study aimed to investigate the genetic association between PTSD and its corresponding brain circuitry components. We conducted a meta-analysis using the summary of PTSD genome-wide association studies (GWAS) from multiple cohorts to enhance statistical power (sample size = 306,400). Based on the result, and utilizing the lifetime trauma events (LTE) trait as a control for PTSD, we investigated the genetic association of PTSD and LTE with 9 brain structure traits related to the brain circuitry (4 cortical, 2 subcortical, and 3 white matter) by various methodologies, including heritability tissue enrichment analysis, global and local genetic correlations, polygenic overlap analysis, and causal inference. As a result, we discovered the enrichment of heritability for PTSD within circuitry-relevant brain regions such as the cingulate cortex and frontal cortex, and we identified genetic correlations between PTSD and these brain regions. We have observed a polygenic overlap and a total of 31 novel jointly significant genetic loci (conjunction FDR &lt; 0.05). These loci are involved in the process of DNA damage and repair as well as the pathway of neurodegenerative diseases. We also identified a potential causal relationship between PTSD and the surface area of the frontal pole. Our findings offer a valuable understanding of the genetic mechanisms underlying PTSD and its associated brain circuitry.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"47 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192211","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Differential Tractography: A Biomarker for Neuronal Function in Neurodegenerative Disease 差异牵张成像:神经退行性疾病中神经元功能的生物标志物
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-26 DOI: 10.1101/2024.08.25.24312255
Connor J Lewis, Zeynep Vardar, Anna Luisa Kühn, Jean M Johnston, Precilla D'Souza, William A Gahl, Mohammed Salman Shazeeb, Cynthia J Tifft, Maria T Acosta
{"title":"Differential Tractography: A Biomarker for Neuronal Function in Neurodegenerative Disease","authors":"Connor J Lewis, Zeynep Vardar, Anna Luisa Kühn, Jean M Johnston, Precilla D'Souza, William A Gahl, Mohammed Salman Shazeeb, Cynthia J Tifft, Maria T Acosta","doi":"10.1101/2024.08.25.24312255","DOIUrl":"https://doi.org/10.1101/2024.08.25.24312255","url":null,"abstract":"GM1 gangliosidosis is an ultra-rare inherited neurodegenerative lysosomal storage disorder caused by biallelic mutations in the <em>GLB1</em> gene. GM1 is uniformly fatal and has no approved therapies, although clinical trials investigating gene therapy as a potential treatment for this condition are underway. Novel outcome measures or biomarkers demonstrating the longitudinal effects of GM1 and potential recovery due to therapeutic intervention are urgently needed to establish efficacy of potential therapeutics. One promising tool is differential tractography, a novel imaging modality utilizing serial diffusion weighted imaging (DWI) to quantify longitudinal changes in white matter microstructure. In this study, we present the novel use of differential tractography in quantifying the progression of GM1 alongside age-matched neurotypical controls. We analyzed 113 DWI scans from 16 GM1 patients and 32 age-matched neurotypical controls to investigate longitudinal changes in white matter pathology. GM1 patients showed white matter degradation evident by both the number and size of fiber tract loss. In contrast, neurotypical controls showed longitudinal white matter improvements as evident by both the number and size of fiber tract growth. We also corroborated these findings by documenting significant correlations between cognitive global impression (CGI) scores of clinical presentations and our differential tractography derived metrics in our GM1 cohort. Specifically, GM1 patients who lost more neuronal fiber tracts also had a worse clinical presentation. This result demonstrates the importance of differential tractography as an important biomarker for disease progression in GM1 patients with potential extension to other neurodegenerative diseases and therapeutic intervention.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"24 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring Youth-Perceived Barriers and Attitudes Towards the Clinical Use of Pharmacogenetic Testing to Optimise Antidepressant Pharmacotherapy 探索青少年对药物基因检测在临床上用于优化抗抑郁药物治疗的障碍和态度
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-26 DOI: 10.1101/2024.08.25.24312539
Bradley Roberts, Zahra Cooper, Georgia Landery, Susanne Stanley, Bernadette T Majda, Khan RL Collins, P Anthony Akkari, Sean D Hood, Jennifer Rodger
{"title":"Exploring Youth-Perceived Barriers and Attitudes Towards the Clinical Use of Pharmacogenetic Testing to Optimise Antidepressant Pharmacotherapy","authors":"Bradley Roberts, Zahra Cooper, Georgia Landery, Susanne Stanley, Bernadette T Majda, Khan RL Collins, P Anthony Akkari, Sean D Hood, Jennifer Rodger","doi":"10.1101/2024.08.25.24312539","DOIUrl":"https://doi.org/10.1101/2024.08.25.24312539","url":null,"abstract":"The field of pharmacogenetics (PGx) is experiencing significant growth, with increasing evidence to support its application in psychiatric care, suggesting its potential to personalise treatment plans, optimise medication efficacy, and reduce adverse drug reactions. However, the perceived utility and practicability of PGx for psychiatric treatment in youth remains underexplored. This study investigated youth-perceived barriers and attitudes towards the implementation of PGx testing to guide antidepressant treatment in primary care. Semi-structured focus groups and interviews were conducted with 17 participants aged between 18 to 24 years. These sessions were recorded and transcribed before thematic analysis was used to identify collective themes. Three key themes were identified, including attitudes towards the medication prescription process, concerns and attitudes towards PGx testing, and perceived barriers to its clinical implementation. Although PGx testing was positively perceived by most participants, all participants shared concerns about PGx testing. Participants voiced concerns about the financial impact of PGx testing, the potential for treatment delays, and the accuracy of PGx testing in guiding antidepressant treatment. Additionally, participants noted that the low awareness and willingness of general practitioners to incorporate PGx testing into routine practice could hinder successful clinical implementation. Prior to the implementation of PGx testing into Australian primary practices, it is essential to acknowledge patient perspectives and ensure that clinical practices remain patient-focused. This study highlights important considerations for integrating PGx testing into antidepressant pharmacotherapy and emphasizes the need for future research to address and mitigate youth-perceived barriers.","PeriodicalId":501375,"journal":{"name":"medRxiv - Genetic and Genomic Medicine","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142192210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Large-scale genome-wide analyses with proteomics integration reveal novel loci and biological insights into frailty 大规模全基因组分析与蛋白质组学整合揭示了有关虚弱的新基因位点和生物学见解
medRxiv - Genetic and Genomic Medicine Pub Date : 2024-08-26 DOI: 10.1101/2024.08.26.24312584
Jonathan Mak, Chenxi Qin, Anna Kuukka, FinnGen Consortium, Sara Hagg, Jake K. L. Lin, Juulia Jylhava
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