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Grigoroiu-Serbanescu M, van der Veen T, Bigdeli T, Herms S, Diaconu CC, Neagu AI, Bass N, Thygesen J, Forstner AJ, Nöthen MM, McQuillin A. Schizophrenia polygenic risk scores, clinical variables and genetic pathways as predictors of phenotypic traits of bipolar I disorder. J Affect Disord 2024; 356:507-518. [PMID: 38640977 DOI: 10.1016/j.jad.2024.04.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 04/05/2024] [Accepted: 04/16/2024] [Indexed: 04/21/2024]
Abstract
AIM We investigated the predictive value of polygenic risk scores (PRS) derived from the schizophrenia GWAS (Trubetskoy et al., 2022) (SCZ3) for phenotypic traits of bipolar disorder type-I (BP-I) in 1878 BP-I cases and 2751 controls from Romania and UK. METHODS We used PRSice-v2.3.3 and PRS-CS for computing SCZ3-PRS for testing the predictive power of SCZ3-PRS alone and in combination with clinical variables for several BP-I subphenotypes and for pathway analysis. Non-linear predictive models were also used. RESULTS SCZ3-PRS significantly predicted psychosis, incongruent and congruent psychosis, general age-of-onset (AO) of BP-I, AO-depression, AO-Mania, rapid cycling in univariate regressions. A negative correlation between the number of depressive episodes and psychosis, mainly incongruent and an inverse relationship between increased SCZ3-SNP loading and BP-I-rapid cycling were observed. In random forest models comparing the predictive power of SCZ3-PRS alone and in combination with nine clinical variables, the best predictions were provided by combinations of SCZ3-PRS-CS and clinical variables closely followed by models containing only clinical variables. SCZ3-PRS performed worst. Twenty-two significant pathways underlying psychosis were identified. LIMITATIONS The combined RO-UK sample had a certain degree of heterogeneity of the BP-I severity: only the RO sample and partially the UK sample included hospitalized BP-I cases. The hospitalization is an indicator of illness severity. Not all UK subjects had complete subphenotype information. CONCLUSION Our study shows that the SCZ3-PRS have a modest clinical value for predicting phenotypic traits of BP-I. For clinical use their best performance is in combination with clinical variables.
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Affiliation(s)
- Maria Grigoroiu-Serbanescu
- Psychiatric Genetics Research Unit, Alexandru Obregia Clinical Psychiatric Hospital, Bucharest, Romania.
| | - Tracey van der Veen
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, London, UK
| | - Tim Bigdeli
- SUNY Downstate Medical Center, Brooklyn, NY, USA
| | - Stefan Herms
- Department of Biomedicine, University of Basel, Basel, Switzerland; Institute of Human Genetics, University of Bonn, School of Medicine, University Hospital Bonn, Germany
| | | | | | - Nicholas Bass
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, London, UK
| | - Johan Thygesen
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, London, UK; Institute of Health Informatics, University College London, London, UK
| | - Andreas J Forstner
- Institute of Human Genetics, University of Bonn, School of Medicine, University Hospital Bonn, Germany
| | - Markus M Nöthen
- Institute of Human Genetics, University of Bonn, School of Medicine, University Hospital Bonn, Germany
| | - Andrew McQuillin
- Molecular Psychiatry Laboratory, Division of Psychiatry, University College London, London, UK
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Wang SH, Lin MC, Wu CS, Chen PC, Thompson WK, Fan CC. Familial factors rather than paternal age contribute to the aetiology of epilepsy. Int J Epidemiol 2024; 53:dyad191. [PMID: 38199793 DOI: 10.1093/ije/dyad191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Accepted: 12/27/2023] [Indexed: 01/12/2024] Open
Abstract
BACKGROUND Whether paternal age associated with offspring's epilepsy risk is a cause of de novo mutation as men age, or just an association due to confounding factors, is still unclear. METHODS We performed a population-based, multi-generation and sibling comparison study in Taiwan, which included 2 751 232 singletons born in 2001-17 who were followed until 2020. Of these, 819 371/826 087 with information on paternal/maternal grandparents were selected for multi-generation analyses and 1 748 382 with sibling(s) were selected for sibling comparison. Cox proportional hazard regression was used to estimate the hazard ratio (HR) and 95% confidence interval (CI). RESULTS In the total cohort, there was an increased risk of epilepsy in individuals with advanced paternal age, e.g. the HR for paternal age ≥50 was1.36 (95% CI: 1.15-1.61) compared with paternal age 25-29, and fathers older than mothers, e.g. the HR for parental age difference ≥15 years was 1.29 (95% CI: 1.16-1.43). When accounting for parental age difference, the association between paternal age and epilepsy in offspring was attenuated (HR for paternal age ≥50 was 1.11, 95% CI: 0.93-1.34). Multi-generation analyses did not support the association of advanced grand-paternal age at childbirth of the parent with offspring's risk of epilepsy. Sibling comparison analyses did not support the association of older paternal age with increased risk of epilepsy (HR was 0.96 for per year increase in paternal age, 95% CI: 0.96-0.97). CONCLUSIONS These results do not support the hypothesis that advanced paternal age is associated with epilepsy in offspring. Instead, familial factors may explain the observed paternal age association with the offspring's risk of epilepsy.
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Affiliation(s)
- Shi-Heng Wang
- National Center for Geriatrics and Welfare Research, National Health Research Institutes, Zhunan, Taiwan
- Department of Medical Research, China Medical University Hospital, China Medical University, Taichung, Taiwan
| | - Mei-Chen Lin
- National Center for Geriatrics and Welfare Research, National Health Research Institutes, Zhunan, Taiwan
| | - Chi-Shin Wu
- National Center for Geriatrics and Welfare Research, National Health Research Institutes, Zhunan, Taiwan
- Department of Psychiatry, National Taiwan University Hospital, Yunlin Branch, Douliu, Taiwan
| | - Pei-Chun Chen
- National Center for Geriatrics and Welfare Research, National Health Research Institutes, Zhunan, Taiwan
| | - Wesley K Thompson
- Center for Population Neuroscience and Genetics, Laureate Institute for Brain Research, Tulsa, OK, USA
| | - Chun-Chieh Fan
- Center for Population Neuroscience and Genetics, Laureate Institute for Brain Research, Tulsa, OK, USA
- Department of Radiology, School of Medicine, University of California San Diego, La Jolla, CA, USA
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Wang SH, Wu CS, Hsu LY, Lin MC, Chen PC, Thompson WK, Fan CC. Paternal age and 13 psychiatric disorders in the offspring: a population-based cohort study of 7 million children in Taiwan. Mol Psychiatry 2022; 27:5244-5254. [PMID: 36042285 DOI: 10.1038/s41380-022-01753-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 08/02/2022] [Accepted: 08/12/2022] [Indexed: 01/14/2023]
Abstract
Although paternal age has been linked to certain psychiatric disorders, the nature of any causal relationship remains elusive. Here, we aimed to comprehensively assess the magnitude of a wide range of offspring's psychiatric risk conferred by paternal age, leveraging a pedigree inferred from covered-insurance relationship (accuracy >98%) in Taiwan's single-payer compulsory insurance program. We also examined whether there is an independent role of paternal age and explored the potential effect of parental age difference. A total cohort of 7,264,788 individuals born between 1980 and 2018 were included; 5,572,232 with sibling(s) were selected for sibling-comparison analyses and 1,368,942 and 1,044,420 children with information of paternal-grandparents and maternal-grandparents, respectively, were selected for multi-generation analyses. Using inpatient/outpatient claims data (1997-2018), we identified schizophrenia, autism, bipolar disorder (BPD), attention deficit-hyperactivity disorder (ADHD), major depressive disorder (MDD), eating disorder (ED), substance use disorder (SUD), mental retardation (MR), tic disorder, obsessive-compulsive disorder (OCD), anxiety, and somatoform disorder. We identified suicides using death certificates. Logistic regression analysis was used to estimate the paternal/maternal/grand-paternal age association with psychiatric risk in the offspring. The total cohort and sibling-comparison cohort resulted in similar estimates. Paternal age had a U-shaped relationship with offspring's MDD, ED, SUD, and anxiety. A very young maternal age (<20 years) was associated with markedly higher risk in offspring's SUD, MR, and suicide. Older paternal age (>25 years) was linearly associated with offspring's schizophrenia, autism, BPD, ADHD, MDD, ED, SUD, MR, OCD, anxiety, and suicide. Older grand-paternal age was linearly associated with offspring's schizophrenia, autism, ADHD, and MR. Dissimilar parental age was positively associated with offspring's ADHD, MDD, SUD, MR, anxiety, and suicide, and negatively associated with offspring's OCD. This comprehensive assessment provides solid evidence for the independent role of paternal age in psychiatric risk in the offspring and clarifies the significance of both early parenthood and delayed paternity.
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Affiliation(s)
- Shi-Heng Wang
- Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan.
- Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan.
- Interdisciplinary Freshmen Program of Public Health, College of Public Health, China Medical University, Taichung, Taiwan.
| | - Chi-Shin Wu
- National Center for Geriatrics and Welfare Research, National Health Research Institutes, Miaoli, Taiwan
- Department of Psychiatry, National Taiwan University Hospital, Yunlin branch, Douliu, Taiwan
| | - Le-Yin Hsu
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University, Taipei, Taiwan
- Graduate Program of Data Science, National Taiwan University and Academia Sinica, Taipei, Taiwan
| | - Mei-Chen Lin
- Department of Occupational Safety and Health, College of Public Health, China Medical University, Taichung, Taiwan
- Interdisciplinary Freshmen Program of Public Health, College of Public Health, China Medical University, Taichung, Taiwan
| | - Pei-Chun Chen
- Department of Public Health, College of Public Health, China Medical University, Taichung, Taiwan
| | - Wesley K Thompson
- Center for Population Neuroscience and Genetics, Laureate Institute for Brain Research, Tulsa, OK, USA
| | - Chun-Chieh Fan
- Center for Population Neuroscience and Genetics, Laureate Institute for Brain Research, Tulsa, OK, USA
- Department of Radiology, School of Medicine, University of California San Diego, La Jolla, CA, USA
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Fountoulakis KN, Panagiotidis P, Tegos T, Kimiskidis V, Nimatoudis I. Paternal age and specific neurological soft signs as reliable and valid neurobiological markers for the diagnosis of patients with schizophrenia. Eur Arch Psychiatry Clin Neurosci 2022; 272:1087-1096. [PMID: 34842982 DOI: 10.1007/s00406-021-01357-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 11/08/2021] [Indexed: 12/17/2022]
Abstract
Advanced parental age at delivery and neurological soft signs (NSS) constitute risk factors for schizophrenia. The aim of the current study was to develop a neurobiological diagnostic index by combining them, and without the contribution of clinical symptomatology. The study sample included 133 patients suffering from schizophrenia according to DSM-IV-TR (77 males and 56 females; aged 33.55 ± 11.22 years old) and 122 normal controls (66 males and 56 females; aged 32.89 ± 9.91 years old). The assessment included the Neurological Evaluation Scale (NES), and a number of scales assessing the clinical symptoms and adverse effects. The statistical analysis included exploratory t-test, Pearson Correlation coefficient (R) and Discriminant Function Analysis (DFA). Exploratory t-tests and Pearson's R suggested that sex, parental age and NSS constitute independent components. On the basis of DFA results, the Psychotic Neurological Index was developed. At the cut-off PNI score of 8.5, sensitivity was equal to 94.74 and specificity to 93.44. The current is probably the first study to report on an easily obtainable diagnostic neurobiological marker with identifiable properties which is absolutely independent from the clinical manifestations and could serve in distinguishing between patients with schizophrenia and healthy controls with high efficacy.
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Affiliation(s)
- Konstantinos N Fountoulakis
- 3rd Department of Psychiatry, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece.
| | - Panagiotis Panagiotidis
- 3rd Department of Psychiatry, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Thomas Tegos
- 1st Department of Neurology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Vasileios Kimiskidis
- 1st Department of Neurology, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Ioannis Nimatoudis
- 3rd Department of Psychiatry, School of Medicine, Faculty of Health Sciences, Aristotle University of Thessaloniki, Thessaloniki, Greece
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5
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Fico G, Oliva V, De Prisco M, Giménez-Palomo A, Sagué-Vilavella M, Gomes-da-Costa S, Garriga M, Solé E, Valentí M, Fanelli G, Serretti A, Fornaro M, Carvalho AF, Vieta E, Murru A. The U-shaped relationship between parental age and the risk of bipolar disorder in the offspring: A systematic review and meta-analysis. Eur Neuropsychopharmacol 2022; 60:55-75. [PMID: 35635997 DOI: 10.1016/j.euroneuro.2022.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2022] [Revised: 05/02/2022] [Accepted: 05/10/2022] [Indexed: 01/06/2023]
Abstract
Parenthood age may affect the risk for the development of different psychiatric disorders in the offspring, including bipolar disorder (BD). The present systematic review and meta-analysis aimed to appraise the relationship between paternal age and risk for BD and to explore the eventual relationship between paternal age and age at onset of BD. We searched the MEDLINE, Scopus, Embase, PsycINFO online databases for original studies from inception, up to December 2021. Random-effects meta-analyses were conducted. Sixteen studies participated in the qualitative synthesis, of which k = 14 fetched quantitative data encompassing a total of 13,424,760 participants and 217,089 individuals with BD. Both fathers [adjusted for the age of other parent and socioeconomic status odd ratio - OR = 1.29(95%C.I. = 1.13-1.48)] and mothers aged ≤ 20 years [(OR = 1.23(95%C.I. = 1.14-1.33)] had consistently increased odds of BD diagnosis in their offspring compared to parents aged 25-29 years. Fathers aged ≥ 45 years [adjusted OR = 1.29 (95%C.I. = 1.15-1.46)] and mothers aged 35-39 years [OR = 1.10(95%C.I. = 1.01-1.19)] and 40 years or older [OR = 1.2(95% C.I. = 1.02-1.40)] likewise had inflated odds of BD diagnosis in their offspring compared to parents aged 25-29 years. Early and delayed parenthood are associated with an increased risk of BD in the offspring. Mechanisms underlying this association are largely unknown and may involve a complex interplay between psychosocial, genetic and biological factors, and with different impacts according to sex and age range. Evidence on the association between parental age and illness onset is still tentative but it points towards a possible specific effect of advanced paternal age on early BD-onset.
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Affiliation(s)
- Giovanna Fico
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Vincenzo Oliva
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain; Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Michele De Prisco
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain; Department of Neuroscience, Section of Psychiatry, Reproductive Science and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Anna Giménez-Palomo
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Maria Sagué-Vilavella
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Susana Gomes-da-Costa
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Marina Garriga
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Eva Solé
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Marc Valentí
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
| | - Giuseppe Fanelli
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy; Department of Human Genetics, Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Alessandro Serretti
- Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Michele Fornaro
- Department of Neuroscience, Section of Psychiatry, Reproductive Science and Odontostomatology, Federico II University of Naples, Naples, Italy
| | - Andre F Carvalho
- IMPACT - the Institute for Mental and Physical Health and Clinical Translation, School of Medicine, Geelong, Vic., Australia 6 Perinatal Health Unit, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, Deakin University, Barcelona, Catalonia, Spain
| | - Eduard Vieta
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain.
| | - Andrea Murru
- Bipolar and Depressive Disorders Unit, Institute of Neuroscience, Hospital Clinic, IDIBAPS, CIBERSAM, University of Barcelona, 170 Villarroel st, 12-0, Barcelona, Catalonia 08036, Spain
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6
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A multifactorial model for the etiology of neuropsychiatric disorders: the role of advanced paternal age. Pediatr Res 2022; 91:757-770. [PMID: 33674740 DOI: 10.1038/s41390-021-01435-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 01/07/2021] [Accepted: 02/02/2021] [Indexed: 12/21/2022]
Abstract
Mental or neuropsychiatric disorders are widespread within our societies affecting one in every four people in the world. Very often the onset of a mental disorder (MD) occurs in early childhood and substantially reduces the quality of later life. Although the global burden of MDs is rising, mental health care is still suboptimal, partly due to insufficient understanding of the processes of disease development. New insights are needed to respond to this worldwide health problem. Next to the growing burden of MDs, there is a tendency to postpone pregnancy for various economic and practical reasons. In this review, we describe the current knowledge on the potential effect from advanced paternal age (APA) on development of autism spectrum disorder, schizophrenia, attention-deficit/hyperactivity disorder, bipolar disorder, obsessive-compulsive disorder, and Tourette syndrome. Although literature did not clearly define an age cut-off for APA, we here present a comprehensive multifactorial model for the development of MDs, including the role of aging, de novo mutations, epigenetic mechanisms, psychosocial environment, and selection into late fatherhood. Our model is part of the Paternal Origins of Health and Disease paradigm and may serve as a foundation for future epidemiological research designs. This blueprint will increase the understanding of the etiology of MDs and can be used as a practical guide for clinicians favoring early detection and developing a tailored treatment plan. Ultimately, this will help health policy practitioners to prevent the development of MDs and to inform health-care workers and the community about disease determinants. Better knowledge of the proportion of all risk factors, their interactions, and their role in the development of MDs will lead to an optimization of mental health care and management. IMPACT: We design a model of causation for MDs, integrating male aging, (epi)genetics, and environmental influences. It adds new insights into the current knowledge about associations between APA and MDs. In clinical practice, this comprehensive model may be helpful in early diagnosis and in treatment adopting a personal approach. It may help in identifying the proximate cause on an individual level or in a specific subpopulation. Besides the opportunity to measure the attributed proportions of risk factors, this model may be used as a blueprint to design prevention strategies for public health purposes.
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Salazar R, Arbeithuber B, Ivankovic M, Heinzl M, Moura S, Hartl I, Mair T, Lahnsteiner A, Ebner T, Shebl O, Pröll J, Tiemann-Boege I. Discovery of an unusually high number of de novo mutations in sperm of older men using duplex sequencing. Genome Res 2022; 32:499-511. [PMID: 35210354 PMCID: PMC8896467 DOI: 10.1101/gr.275695.121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 01/14/2022] [Indexed: 11/25/2022]
Abstract
De novo mutations (DNMs) are important players in heritable diseases and evolution. Of particular interest are highly recurrent DNMs associated with congenital disorders that have been described as selfish mutations expanding in the male germline, thus becoming more frequent with age. Here, we have adapted duplex sequencing (DS), an ultradeep sequencing method that renders sequence information on both DNA strands; thus, one mutation can be reliably called in millions of sequenced bases. With DS, we examined ∼4.5 kb of the FGFR3 coding region in sperm DNA from older and younger donors. We identified sites with variant allele frequencies (VAFs) of 10-4 to 10-5, with an overall mutation frequency of the region of ∼6 × 10-7 Some of the substitutions are recurrent and are found at a higher VAF in older donors than in younger ones or are found exclusively in older donors. Also, older donors harbor more mutations associated with congenital disorders. Other mutations are present in both age groups, suggesting that these might result from a different mechanism (e.g., postzygotic mosaicism). We also observe that independent of age, the frequency and deleteriousness of the mutational spectra are more similar to COSMIC than to gnomAD variants. Our approach is an important strategy to identify mutations that could be associated with a gain of function of the receptor tyrosine kinase activity, with unexplored consequences in a society with delayed fatherhood.
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Affiliation(s)
- Renato Salazar
- Institute of Biophysics, Johannes Kepler University, Linz, Austria 4020
| | | | - Maja Ivankovic
- Institute of Biophysics, Johannes Kepler University, Linz, Austria 4020
| | - Monika Heinzl
- Institute of Biophysics, Johannes Kepler University, Linz, Austria 4020
| | - Sofia Moura
- Institute of Biophysics, Johannes Kepler University, Linz, Austria 4020
| | - Ingrid Hartl
- Institute of Biophysics, Johannes Kepler University, Linz, Austria 4020
| | - Theresa Mair
- Institute of Biophysics, Johannes Kepler University, Linz, Austria 4020
| | | | - Thomas Ebner
- Department of Gynecology, Obstetrics and Gynecological Endocrinology, Kepler University Hospital, Linz, Austria 4020
| | - Omar Shebl
- Department of Gynecology, Obstetrics and Gynecological Endocrinology, Kepler University Hospital, Linz, Austria 4020
| | - Johannes Pröll
- Center for Medical Research, Faculty of Medicine, Johannes Kepler University, Linz, Austria 4020
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Goes FS, Pirooznia M, Tehan M, Zandi PP, McGrath J, Wolyniec P, Nestadt G, Pulver AE. De novo variation in bipolar disorder. Mol Psychiatry 2021; 26:4127-4136. [PMID: 31776463 PMCID: PMC10754065 DOI: 10.1038/s41380-019-0611-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2019] [Revised: 11/10/2019] [Accepted: 11/14/2019] [Indexed: 11/09/2022]
Abstract
Bipolar disorder (BD) is a common, highly heritable disorder that affects 1-2% of the world's population. To date, most genetic studies of BD have focused on common gene variation, and while robustly associated loci have been identified, a substantial proportion of the heritability remains missing and could be partially attributable to rare variation. In this study, we apply a de novo paradigm in BD to identify newly arisen variants that have yet to undergo natural selection and may represent highly pathogenic variants. We performed whole genome sequencing of 97 trios of Ashkenazi Jewish descent, selecting "simplex" families with no family history of BD and an early age of onset. We found a total of 6882 de novo variants (an average of 70.9 ± 12.9 S.D. variants per trio), including 107 variants within protein-coding genes. We combined our exonic variations with the results of 79 previously published BD trios, identifying 20 loss-of-function (LoF) and 77 missense damaging de novo variants in BD. These variants showed significant enrichment for constrained genes and for genes located to the postsynaptic density (PSD) (all Bonferroni corrected p < 0.05). Pathway analyses showed enrichment in several pathways, including "Phosphoinositides (PI) and their downstream targets" (Bonferroni p = 4.2 × 10-6), a pathway prominently featured in lithium's hypothesized mechanism of action. In addition, while we found overall evidence for transmission of common variant polygenic risk of BD in our full sample (pTDT p = 2.21 × 10-4), specific trios with LoF variants showed no evidence of polygenic transmission. In sum, our findings support the de novo paradigm as a contributor to the genetic architecture of BD and provide evidence that constrained genes, as well as genes within the PSD and PI pathway harbor rare variation associated with BD.
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Affiliation(s)
- Fernando S Goes
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA.
| | - Mehdi Pirooznia
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
| | - Martin Tehan
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
| | - Peter P Zandi
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
| | - John McGrath
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
| | - Paula Wolyniec
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
| | - Gerald Nestadt
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
| | - Ann E Pulver
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 550 N. Broadway, Suite 202, Baltimore, MD, 21287, USA
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9
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Couture V, Delisle S, Mercier A, Pennings G. The other face of advanced paternal age: a scoping review of its terminological, social, public health, psychological, ethical and regulatory aspects. Hum Reprod Update 2020; 27:305-323. [PMID: 33201989 DOI: 10.1093/humupd/dmaa046] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/25/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND There is a global tendency for parents to conceive children later in life. The maternal dimension of the postponement transition has been thoroughly studied, but interest in the paternal side is more recent. For the moment, most literature reviews on the topic have focused on the consequences of advanced paternal age (APA) on fertility, pregnancy and the health of the child. OBJECTIVE AND RATIONALE The present review seeks to move the focus away from the biological and medical dimensions of APA and synthesise the knowledge of the other face of APA. SEARCH METHODS We used the scoping review methodology. Searches of interdisciplinary articles databases were performed with keywords pertaining to APA and its dimensions outside of biology and medicine. We included scientific articles, original research, essays, commentaries and editorials in the sample. The final sample of 177 documents was analysed with qualitative thematic analysis. OUTCOMES We identified six themes highlighting the interdisciplinary nature of APA research. The 'terminological aspects' highlight the lack of consensus on the definition of APA and the strategies developed to offer alternatives. The 'social aspects' focus on the postponement transition towards reproducing later in life and its cultural dimensions. The 'public health aspects' refer to attempts to analyse APA as a problem with wider health and economic implications. The 'psychological aspects' focus on the consequences of APA and older fatherhood on psychological characteristics of the child. The 'ethical aspects' reflect on issues of APA emerging at the intersection of parental autonomy, children's welfare and social responsibility. The 'regulatory aspects' group different suggestions to collectively approach the implications of APA. Our results show that the field of APA is still in the making and that evidence is lacking to fully address the issues of APA. The review suggests promising avenues of research such as introducing the voice of fathers of advanced age into the research agenda. WIDER IMPLICATIONS The results of this review will be useful for developing policies and preconception health interventions that consider and include prospective fathers of advanced age.
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Affiliation(s)
- Vincent Couture
- Faculty of Nursing, Université Laval, Québec G1V 0A6, Canada.,Research Center of the CHU de Québec-Université Laval, Québec G1L 3L5, Canada
| | - Stéphane Delisle
- Research Center of the CHU de Québec-Université Laval, Québec G1L 3L5, Canada
| | - Alexis Mercier
- Faculty of Nursing, Université Laval, Québec G1V 0A6, Canada
| | - Guido Pennings
- Department of Philosophy and Moral Sciences, Bioethics Institute Ghent, Ghent University, Gent 9000, Belgium
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Fountoulakis KN, Gonda X, Siamouli M, Panagiotidis P, Moutou K, Nimatoudis I, Kasper S. A case-control study of paternal and maternal age as risk factors in mood disorders. Int J Psychiatry Clin Pract 2019; 23:90-98. [PMID: 30880518 DOI: 10.1080/13651501.2018.1519079] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Objective: Advanced parental age might constitute a risk factor for various disorders. We tested whether this concerns also mood disorder patients. Methods: The study included 314 subjects (42 bipolar-BD patients; 21 manics and 21 depressives, 68 unipolar-UD, and 204 normal controls-NC). Analysis of Covariance (ANCOVA) and the calculation of the Relative Risk (RR) and the Odds Ratio (OR) were used for the analysis. Results: Paternal age differed between NC and UD patients (29.42 ± 6.07 vs. 32.12 ± 5.54; p = .01) and manics (29.42 ± 6.07 vs. 35.00 ± 5.75; p = .001) and maternal age between NC and manics (25.46 ± 4.52 vs. 31.43 ± 4.75; p < .001) and manic and UD (31.43 ± 4.75 vs. 26.75 ± 6.03; p = .002). The RR and OR values suggested that advanced parental age constitutes a risk factor for the development of mood disorders. Conclusions: In a non-dose dependent and gender-independent, advanced parental age constitutes a risk factor for the development of BD with index episode of mania (probably manic predominant polarity); only advanced paternal age constitutes a risk factor for the development of UD and BD with index episode of depression (probably depressive predominant polarity). This is the first study suggesting differential effect of advanced parental age depending on predominant polarity of BD.
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Affiliation(s)
- Konstantinos N Fountoulakis
- a 3rd Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Xenia Gonda
- b Department of Psychiatry and Psychotherapy , Semmelweis University , Budapest , Hungary
| | - Melina Siamouli
- a 3rd Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Panagiotis Panagiotidis
- a 3rd Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | | | - Ioannis Nimatoudis
- a 3rd Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Siegfried Kasper
- d Universitätsklinik für Psychiatrie und Psychotherapie, Medizinische Universität Wien , Vienna , Austria
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Fountoulakis KN, Gonda X, Siamouli M, Panagiotidis P, Moutou K, Nimatoudis I, Kasper S. Paternal and maternal age as risk factors for schizophrenia: a case-control study. Int J Psychiatry Clin Pract 2018; 22:170-176. [PMID: 29069946 DOI: 10.1080/13651501.2017.1391292] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE Advanced parental age might constitute a generic risk factor for mental and somatic disorders. The current study tested whether this concerns also patients with schizophrenia. METHODS A total of 231 schizophrenic, 56 other severe mental disorders patients and 204 controls were diagnosed according to DSM-IV-TR. Data were tested with ANOVA models including relative risk and odds ratios. RESULTS Patients with schizophrenia manifested higher paternal (32.55 ± 6.35 vs. 29.42 ± 6.07, p < .001) and maternal age (27.66 ± 5.57 vs. 25.46 ± 4.52, p < .001). Patients with other mental disorders had higher paternal (33.29 ± 8.35; p = .001) but not maternal age (26.69 ± 5.89; p = .296) compared to controls. There was no difference between the two patient groups concerning either paternal or maternal age (p > .05). There seems to be a higher risk for the development of schizophrenia in offspring with paternal age above 25 years and maternal age above 22 years at delivery. CONCLUSIONS The current study provides further support for the suggestion that advanced paternal age constitutes a risk factor (in a non-dose dependent and gender-independent way) for the development of schizophrenia but also for other mental disorders. In contrast, advanced maternal age characterises schizophrenia specifically. The higher risk is evident after 25 years of paternal and 22 years of maternal age, respectively.
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Affiliation(s)
- Konstantinos N Fountoulakis
- a Third Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Xenia Gonda
- b Department of Psychiatry and Psychotherapy , Semmelweis University , Budapest , Hungary.,c MTA-SE Neuropsychopharmacology and Neurochemistry Research Group , Hungarian Academy of Sciences, Semmelweis University , Budapest , Hungary
| | - Melina Siamouli
- a Third Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Panagiotis Panagiotidis
- a Third Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | | | - Ioannis Nimatoudis
- a Third Department of Psychiatry , School of Medicine, Aristotle University of Thessaloniki , Thessaloniki , Greece
| | - Siegfried Kasper
- e Universitätsklinik für Psychiatrie und Psychotherapie , Medizinische Universität , Vienna , Austria
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Smith KR. Paternal age bioethics. JOURNAL OF MEDICAL ETHICS 2015; 41:775-779. [PMID: 26037282 DOI: 10.1136/medethics-2014-102405] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Accepted: 05/13/2015] [Indexed: 06/04/2023]
Abstract
Modern genetic sequencing studies have confirmed that the sperm of older men contain a greater number of de novo germline mutations than the sperm of younger men. Although most of these mutations are neutral or of minimal phenotypic impact, a minority of them present a risk to the health of future children. If demographic trends towards later fatherhood continue, this will likely lead to a more children suffering from genetic disorders. A trend of later fatherhood will accelerate the accumulation of paternal-origin de novo mutations in the gene pool, gradually reducing human fitness in the long term. These risks suggest that paternal age is of ethical importance. Children affected by de novo mutations arising from delayed fatherhood can be said to be harmed, in the sense of 'impersonal' harm or 'non-comparative' harm. Various strategies are open at societal and individual levels towards reducing deleterious paternal age effects. Options include health education to promote earlier fatherhood, incentives for young sperm donors and state-supported universal sperm banking. The latter approach would likely be of the greatest benefit and could in principle be implemented immediately. More futuristically, human germline genetic modification offers the potential to repair heritable mutational damage.
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Wang SH, Liu CM, Hwu HG, Hsiao CK, Chen WJ. Association of older paternal age with earlier onset among co-affected schizophrenia sib-pairs. Psychol Med 2015; 45:2205-2213. [PMID: 25746410 DOI: 10.1017/s0033291715000203] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
BACKGROUND Advanced paternal age is associated with increased risk of schizophrenia. This study aimed to explore whether older paternal age is associated with earlier onset among co-affected schizophrenia sib-pairs with the same familial predisposition. METHOD A total of 1297 patients with schizophrenia from 630 families, which were ascertained to have at least two siblings affected, throughout Taiwan were interviewed using the Diagnostic Interview for Genetic Studies. Both inter-family comparisons, a hierarchical regression model allowing for familial dependence and adjusting for confounders, and within-family comparisons, examining the consistency between onset order and birth order, were performed. RESULTS An inverted U shape was observed between paternal age and onset of schizophrenia. Affected offspring with paternal age of 20-24 years had the oldest onset. As paternal age increased over 25 years, older paternal age exhibited a linear decrease in the onset of schizophrenia. On average, the onset was lowered by 1.5 years for paternal age of 25-29 years and by 5.5 years for paternal age ⩾50 years (p = 0.04; trend test). The proportion of younger siblings with earlier onset (58%) was larger than that of older siblings with earlier onset (42%) (p = 0.0002). CONCLUSIONS These findings indicate that paternal age older than 25 years and younger than 20 years were both associated with earlier onset among familial schizophrenia cases. The associations of advanced paternal age with both increased susceptibility to schizophrenia and earlier onset of schizophrenia are consistent with the rate of increases in spontaneous mutations in sperm as men age.
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Affiliation(s)
- S H Wang
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University,Taipei,Taiwan
| | - C M Liu
- Institute of Brain and Mind Sciences, College of Medicine, National Taiwan University,Taipei,Taiwan
| | - H G Hwu
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University,Taipei,Taiwan
| | - C K Hsiao
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University,Taipei,Taiwan
| | - W J Chen
- Institute of Epidemiology and Preventive Medicine, College of Public Health, National Taiwan University,Taipei,Taiwan
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Carkaci-Salli N, Salli U, Tekin I, Hengst JA, Zhao MK, Gilman TL, Andrews AM, Vrana KE. Functional characterization of the S41Y (C2755A) polymorphism of tryptophan hydroxylase 2. J Neurochem 2014; 130:748-58. [PMID: 24899127 DOI: 10.1111/jnc.12779] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Accepted: 05/23/2014] [Indexed: 01/11/2023]
Abstract
Human TPH2 (hTPH2) catalyzes the rate-limiting step in CNS serotonin biosynthesis. We characterized a single-nucleotide polymorphism (C2755A) in the hTPH2 gene that substitutes tyrosine for serine at position 41 in the regulatory domain of the enzyme. This polymorphism is associated with bipolar disorder and peripartum depression in a Chinese population. Recombinant h TPH2 human proteins were expressed in bacteria and also stably expressed in PC12 cells. Following bacterial expression and purification, the tyrosine for serine substitution at position 41 (S41Y) polymorphic enzyme displayed increased Vmax with unchanged Km values. By contrast, enzyme stability was decreased in vitro from 32 min to 4 min (37 °C) for the S41Y enzyme (as compared to the wild-type enzyme). The S41Y polymorphism decreased cyclic AMP-dependent protein kinase A-mediated phosphorylation ~ 50% relative to wild-type hTPH2, suggesting that the S41Y mutation may disrupt the post-translational regulation of this enzyme. Transfected PC12 cells expressed hTPH2 mRNA, active protein, and synthesized and released serotonin. Paradoxically, while S41Y-transfected PC12 cells expressed higher levels of hTPH2 than wild type, they synthesized less serotonin. These findings suggest a modified regulation of the S41Y gene variant leading to altered regulation and reduced neurotransmitter synthesis that may contribute to association of the polymorphism with bipolar disorder and depression. We report the functional implications of a polymorphic human tryptophan hydroxylase-2 gene associated with depression and bipolar disorder. The polymorphic enzyme (serine-41 converted to tyrosine) has increased activity, but decreased enzyme stability and serotonin production. Moreover, cyclic AMP-dependent protein kinase (PKA)-mediated phosphorylation of the mutant enzyme is decreased suggesting modified regulation of the S41Y variant leading to altered serotonin.
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Affiliation(s)
- Nurgul Carkaci-Salli
- Department of Pharmacology, Penn State College of Medicine, Hershey, Pennsylvania, USA
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