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Wang S, Chen Y, Du J, Wang Z, Lin Z, Hong G, Qu D, Shen Y, Li L. Post-mortem genetic analysis of sudden unexplained death in a young cohort: a whole-exome sequencing study. Int J Legal Med 2023; 137:1661-1670. [PMID: 37624372 DOI: 10.1007/s00414-023-03075-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Accepted: 08/15/2023] [Indexed: 08/26/2023]
Abstract
Sudden unexplained death (SUD) constitutes a considerable portion of unexpected sudden death in the young. Molecular autopsy has proved to be an efficient diagnostic tool in the multidisciplinary management of SUD. Yet, many cases remain undiagnosed using the widely adopted targeted genetic screening strategies. Here, we investigated the genetic substrates of a young SUD cohort (18-40 years old) from China using whole-exome sequencing (WES), with the primary aim to identify novel SUD susceptibility genes. Within 255 previously acknowledged SUD-associated genes, 21 variants with likely functional effects (pathogenic/likely pathogenic) were identified in 51.9% of the SUD cases. More importantly, a set of 33 candidate genes associated with myopathy were identified to be novel susceptibility genes for SUD. Comparative analysis of the cumulative PHRED-scaled CADD score and polygenetic burden score showed that the amount and deleteriousness of variants in the 255 SUD-associated genes and the 33 candidate genes identified by this study were significantly higher compared with 289 randomly selected genes. A significantly higher genetic burden of rare variants (MAF < 0.1%) in the 33 candidate genes also highlighted putative roles of these genes in SUD. After incorporating these novel genes, the genetic testing yields of the current SUD cohort elevated from 51.9 to 66.7%. Our study expands understanding of the genetic variants underlying SUD and presents insights that improve the utility of genetic screenings.
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Affiliation(s)
- Shouyu Wang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Yongsheng Chen
- Shanghai Key Laboratory of Crime Scene Evidence, Shanghai Public Security Bureau, Shanghai, 200083, People's Republic of China
| | - Jianghua Du
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Zhimin Wang
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Zijie Lin
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Guanghui Hong
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Dong Qu
- Institute of Legal Medicine, Hannover Medical School, 30625, Hannover, Germany
| | - Yiwen Shen
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China
| | - Liliang Li
- Department of Forensic Medicine, School of Basic Medical Sciences, Fudan University, 131 Dongan Road, Xuhui District, Shanghai, 200032, People's Republic of China.
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Pang JXQ, Kheirkhahrahimabadi H, Bindra S, Bindra G, Panaccione R, Eksteen B, Kaplan GG, Nasser Y, Beck PL, Jijon HB. Differential Effect of Genetic Burden on Disease Phenotypes in Crohn's Disease and Ulcerative Colitis in a Canadian Cohort. J Can Assoc Gastroenterol 2020; 4:65-72. [PMID: 33855263 PMCID: PMC8023832 DOI: 10.1093/jcag/gwaa002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Accepted: 01/06/2020] [Indexed: 02/06/2023] Open
Abstract
Background and Aims Crohn’s disease (CD) and ulcerative colitis (UC) demonstrate considerable phenotypic heterogeneity and course. Accurate predictors of disease behaviour are lacking. The contribution of genetics and specific polymorphisms is widely appreciated; however, their cumulative effect(s) upon disease behaviour remains poorly understood. Here, we investigate the relationship between genetic burden and disease phenotype in a Canadian inflammatory bowel disease (IBD) Cohort. Methods We retrospectively examined a cohort of CD and UC patients recruited from a single tertiary referral center genotyped using a Goldengate Illumina platform. A genetic risk score (GRS) incorporating strength of association (log odds ratio) and allele dose for 151 IBD-risk loci was calculated and evaluated for phenotypic associations. Results Among CD patients, higher GRS was associated with earlier onset of disease (regression coefficient −2.19, 95% confidence interval [CI] −3.77 to −0.61, P = 0.007), ileal disease (odds ratio [OR] 1.45), stricturing/penetrating disease (OR 1.72), perianal disease (OR 1.57) and bowel resection (OR 1.66). Higher GRS was associated with use of anti-tumor necrosis factor (TNF) (P < 0.05) but not immunomodulators. Interestingly, we could not demonstrate an association between higher GRS and family history of IBD (OR 1.27, P = 0.07). Onset of disease remained statistically significant for never smokers (P = 0.03) but not ever smokers (P = 0.13). For UC, having a higher GRS did not predict the age of diagnosis nor was it predictive of UC disease extent (P = 0.18), the need for surgery (P = 0.74), nor medication use (immunomodulators P = 0.53, anti-TNF P = 0.49). We could not demonstrate an association between increased GRS and having a family history of IBD in the UC group. Conclusions Increasing genetic burden is associated with early age of diagnosis in CD and may be useful in predicting disease behaviour in CD but not UC.
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Affiliation(s)
- Jack X Q Pang
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | | | - Sunint Bindra
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Gurmeet Bindra
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Remo Panaccione
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Bertus Eksteen
- Current Address: Aspen Woods Clinic, Calgary, Alberta, Canada
| | - Gilaad G Kaplan
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Yasmin Nasser
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Paul L Beck
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
| | - Humberto B Jijon
- Division of Gastroenterology, University of Calgary, Calgary, Alberta, Canada
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Katsavos S, Artemiadis A, Davaki P, Stamboulis E, Kilindireas K, Anagnostouli M. Familial multiple sclerosis in Greece: Distinct clinical and imaging characteristics in comparison with the sporadic disease. Clin Neurol Neurosurg 2018; 173:144-149. [PMID: 30125837 DOI: 10.1016/j.clineuro.2018.08.021] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 06/26/2018] [Accepted: 08/11/2018] [Indexed: 11/28/2022]
Abstract
OBJECTIVE Few studies are available worldwide concerning clinical, imaging and genetic/immunogenetic profile of familial multiple sclerosis (fMS). Recent but not systematic data concerning fMS, without direct comparison to sporadic MS (sMS) drove our aim towards further research in the field, given the total lack of information for the Greek population as well. Thus, in this case-control study we examined the clinical and imaging characteristics of 102 fMS-patients, compared to 282 patients suffering sMS. PATIENTS AND METHODS Patients recruited underwent medical interview (demographic, clinical and family history data collected). They were also assessed for disability and their MRI-scans were analyzed for lesion distribution. Statistical analyses were performed using SPSS v.21.0 software. RESULTS 49% of unrelated fMS cases had at least one 1st degree relative affected, while the rest had also at least one relative with MS, 3rd degree or closer. Only the former subgroup (1st degree relative) and not the entire fMS sample, had significantly younger age at onset (AAO) compared to sMS cases (mean AAO 28.08 vs 31.33 years, p = 0.036). AAO anticipation was noted in younger generation fMS patients (mean AAO 24.67 years in younger generation vs 37 years in older generation, p = 0.001). With regard to our MRI findings, subcortical lesions were less frequent in fMS (71% in fMS vs 81.9% in sMS patients, p = 0.028), whereas cervical cord lesions more frequent (93% in fMS vs 79.9% in sMS patients, p = 0.033, only in the 1st degree relative subgroup). Double vision was a less common first symptom in fMS (4.1% in fMS vs 14.8% in sMS patients, p = 0.005). 1st degree relatives of fMS patients were more often diagnosed with Hashimoto's (8.9% in fMS relatives vs 3.3% in sMS relatives, p = 0.033). CONCLUSION Younger AAO and different lesion distribution in brain and possibly spinal cord was observed in fMS in comparison to sMS patients. The hypothesis of increased genetic burden in fMS could offer some explanation for these differences, which needs though further validation as a next step, through genetic/immunogenetic testing in larger cohorts, of different ethnic groups.
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Affiliation(s)
- Serafeim Katsavos
- Immunogenetics Laboratory, 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece
| | - Artemios Artemiadis
- Immunogenetics Laboratory, 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece
| | - Panagiota Davaki
- 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece
| | - Eleftherios Stamboulis
- 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece
| | - Konstantinos Kilindireas
- 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece
| | - Maria Anagnostouli
- Immunogenetics Laboratory, 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece; 1st Dept. of Neurology, Medical School of Athens National and Kapodistrian University, Aeginition Hospital, Vas. Sofias Ave. 72-74, Athens, Greece.
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Guo J, Huang J, Zhou Y, Zhou Y, Yu L, Li H, Hou L, Zhu L, Ge D, Zeng Y, Guleng B, Li Q. Germline and somatic variations influence the somatic mutational signatures of esophageal squamous cell carcinomas in a Chinese population. BMC Genomics 2018; 19:538. [PMID: 30012096 PMCID: PMC6048762 DOI: 10.1186/s12864-018-4906-4] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 06/29/2018] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Esophageal squamous cell carcinomas (ESCC) is the fourth most lethal cancer in China. Previous studies reveal several highly conserved mutational processes in ESCC. However, it remains unclear what are the true regulators of the mutational processes. RESULTS We analyzed the somatic mutational signatures in 302 paired whole-exome sequencing data of ESCC in a Chinese population for potential regulators of the mutational processes. We identified three conserved subtypes based on the mutational signatures with significantly different clinical outcomes. Our results show that patients of different subpopulations of Chinese differ significantly in the activity of the "NpCpG" signature (FDR = 0.00188). In addition, we report ZNF750 and CDC27, of which the somatic statuses and the genetic burdens consistently influence the activities of specific mutational signatures in ESCC: the somatic ZNF750 status is associated with the AID/APOBEC-related mutational process (FDR = 0.0637); the somatic CDC27 copy-number is associated with the "NpCpG" (FDR = 0.00615) and the AID/APOBEC-related mutational processes (FDR = 8.69 × 10- 4). The burdens of germline variants in the two genes also significantly influence the activities of the same somatic mutational signatures (FDR < 0.1). CONCLUSIONS We report multiple factors that influence the mutational processes in ESCC including: the subpopulations of Chinese; the germline and somatic statuses of ZNF750 and CDC27 and exposure to alcohol and tobacco. Our findings based on the evidences from both germline and somatic levels reveal potential genetic regulators of the somatic mutational processes and provide insights into the biology of esophageal carcinogenesis.
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Affiliation(s)
- Jintao Guo
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
- Center for BioMedical Big Data Research, Medical College of Xiamen University, Xiamen, 361102 China
| | - Jiankun Huang
- Central Laboratory, Zhongshan Hospital affiliated to Xiamen University, Xiamen, 361004 China
| | - Ying Zhou
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
- Center for BioMedical Big Data Research, Medical College of Xiamen University, Xiamen, 361102 China
| | - Yulin Zhou
- Maternity and Child Health Care Hospital, Xiamen, 361003 China
| | - Liying Yu
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
- Center for BioMedical Big Data Research, Medical College of Xiamen University, Xiamen, 361102 China
| | - Huili Li
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
| | - Lingyun Hou
- Department of Pediatrics, The First Affiliated Hospital of Xiamen University, Xiamen, 361003 China
| | - Liuwei Zhu
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
| | - Dandan Ge
- Department of Pediatrics, The First Affiliated Hospital of Xiamen University, Xiamen, 361003 China
| | - Yuanyuan Zeng
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
| | - Bayasi Guleng
- Department of Gastroenterology, Zhongshan Hospital affiliated to Xiamen University, 201 Hu’bin South Road, Xiamen, Fujian Province China
| | - Qiyuan Li
- Department of Translational Medicine, Medical College of Xiamen University, Xiamen, 361102 China
- Center for BioMedical Big Data Research, Medical College of Xiamen University, Xiamen, 361102 China
- Medical College of Xiamen University, 4221-120 South Xiang’an Road, Xiang’an District, Xiamen, Fujian Province China
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Søndergaard HB, Petersen ER, Magyari M, Sellebjerg F, Oturai AB. Genetic burden of MS risk variants distinguish patients from healthy individuals but are not associated with disease activity. Mult Scler Relat Disord 2017; 13:25-27. [PMID: 28427696 DOI: 10.1016/j.msard.2017.01.015] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2016] [Revised: 01/20/2017] [Accepted: 01/27/2017] [Indexed: 11/18/2022]
Abstract
Weighted genetic risk score (wGRS) was analysed for association with disease activity in more than 500 MS patients before and during interferon-beta treatment. The wGRS was higher in MS patients than in healthy controls when analysing eight HLA - and 109 non-HLA MS risk gene variants. No significant associations were observed between number of relapses prior to or during treatment with interferon-beta, both with and without HLA risk alleles included in the wGRS. In conclusion, among Danes the wGRS was higher in MS patients than controls but was not associated with the overall disease activity or response to treatment with interferon-beta.
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Affiliation(s)
- Helle Bach Søndergaard
- Danish Multiple Sclerosis Center, Department of Neurology, Rigshospitalet, University of Copenhagen, Denmark.
| | - Eva Rosa Petersen
- Danish Multiple Sclerosis Center, Department of Neurology, Rigshospitalet, University of Copenhagen, Denmark
| | - Melinda Magyari
- Danish Multiple Sclerosis Center, Department of Neurology, Rigshospitalet, University of Copenhagen, Denmark; The Danish Multiple Sclerosis Registry, Department of Neurology, Rigshospitalet, University of Copenhagen, Denmark
| | - Finn Sellebjerg
- Danish Multiple Sclerosis Center, Department of Neurology, Rigshospitalet, University of Copenhagen, Denmark
| | - Annette Bang Oturai
- Danish Multiple Sclerosis Center, Department of Neurology, Rigshospitalet, University of Copenhagen, Denmark
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