Oleksandr Frei

• Bahrami, Shahram; Hindley, Guy Frederick Lanyon; Winsvold, Bendik K S; O'Connell, Kevin S; Frei, Oleksandr & Shadrin, Alexey [Vis alle 39 forfattere av denne artikkelen] (2022). Dissecting the shared genetic basis of migraine and mental disorders using novel statistical tools. Brain. ISSN 0006-8950. 145(1), s. 142–153. doi: 10.1093/brain/awab267.
• Mullins, Niamh; Forstner, Andreas J.; O'Connell, Kevin Sean; Coombes, Brandon; Coleman, Jonathan R. I. & Qiao, Zhen [Vis alle 59 forfattere av denne artikkelen] (2021). Genome-wide association study of more than 40,000 bipolar disorder cases provides new insights into the underlying biology. Nature Genetics. ISSN 1061-4036. 53, s. 817–829. doi: 10.1038/s41588-021-00857-4.
• van der Meer, Dennis; Kaufmann, Tobias; Shadrin, Alexey; Makowski, Carolina; Frei, Oleksandr & Roelfs, Daniel [Vis alle 17 forfattere av denne artikkelen] (2021). The genetic architecture of human cortical folding. Science Advances. ISSN 2375-2548. 7(51), s. 1–9. doi: 10.1126/sciadv.abj9446. Fulltekst i vitenarkiv
• Shadrin, Alexey A.; Kaufmann, Tobias; van der Meer, Dennis; Palmer, Clare E.; Makowski, Carolina & Loughnan, Robert [Vis alle 22 forfattere av denne artikkelen] (2021). Vertex-wise multivariate genome-wide association study identifies 780 unique genetic loci associated with cortical morphology. NeuroImage. ISSN 1053-8119. 244, s. 1–8. doi: 10.1016/j.neuroimage.2021.118603. Fulltekst i vitenarkiv
• Pihlstrøm, Lasse; Fan, Chun Chieh; Frei, Oleksandr; Tan, Manuela; Karunamuni, Roshan A. & Blauwendraat, Cornelis [Vis alle 12 forfattere av denne artikkelen] (2021). Genetic Stratification of Age-Dependent Parkinson's Disease Risk by Polygenic Hazard Score. Movement Disorders. ISSN 0885-3185. doi: 10.1002/mds.28808. Fulltekst i vitenarkiv
• Wiström, Erik David; O'Connell, Kevin Sean; Karadag, Naz; Bahrami, Shahram; Hindley, Guy Frederick Lanyon & Lin, Aihua [Vis alle 14 forfattere av denne artikkelen] (2021). Genome-wide analysis reveals genetic overlap between alcohol use behaviours, schizophrenia and bipolar disorder and identifies novel shared risk loci. Addiction. ISSN 0965-2140. doi: 10.1111/add.15680. Fulltekst i vitenarkiv
• Monereo-Sánchez, Jennifer; Schram, Miranda T.; Frei, Oleksandr; O'Connell, Kevin Sean; Shadrin, Alexey & Smeland, Olav Bjerkehagen [Vis alle 11 forfattere av denne artikkelen] (2021). Genetic Overlap Between Alzheimer’s Disease and Depression Mapped Onto the Brain. Frontiers in Neuroscience. ISSN 1662-4548. 15, s. 1–9. doi: 10.3389/fnins.2021.653130. Fulltekst i vitenarkiv
• O'Connell, Kevin Sean; Frei, Oleksandr; Bahrami, Shahram; Smeland, Olav Bjerkehagen; Bettella, Francesco & Cheng, Weiqiu [Vis alle 16 forfattere av denne artikkelen] (2021). Characterizing the Genetic Overlap Between Psychiatric Disorders and Sleep-Related Phenotypes. Biological Psychiatry. ISSN 0006-3223. s. 1–11. doi: 10.1016/j.biopsych.2021.07.007. Fulltekst i vitenarkiv
• Hindley, Guy Frederick Lanyon; Bahrami, Shahram; Steen, Nils Eiel; O'Connell, Kevin Sean; Frei, Oleksandr & Shadrin, Alexey [Vis alle 13 forfattere av denne artikkelen] (2021). Characterising the shared genetic determinants of bipolar disorder, schizophrenia and risk-taking. Translational Psychiatry. ISSN 2158-3188. 11:466, s. 1–10. doi: 10.1038/s41398-021-01576-4. Fulltekst i vitenarkiv
• Elvsåshagen, Torbjørn; Shadrin, Alexey; Frei, Oleksandr; van der Meer, Dennis; Bahrami, Shahram & Kumar, Vinod J. [Vis alle 10 forfattere av denne artikkelen] (2021). The genetic architecture of the human thalamus and its overlap with ten common brain disorders. Nature Communications. ISSN 2041-1723. 12(1). doi: 10.1038/s41467-021-23175-z. Fulltekst i vitenarkiv
• Holland, Dominic; Frei, Oleksandr; Desikan, Rahul S.; Fan, Chun Chieh; Shadrin, Alexey & Smeland, Olav Bjerkehagen [Vis alle 8 forfattere av denne artikkelen] (2021). The genetic architecture of human complex phenotypes is modulated by linkage disequilibrium and heterozygosity. Genetics. ISSN 0016-6731. 217(3), s. 1–21. doi: 10.1093/genetics/iyaa046.
• Torgersen, Kristin Stensland; Bahrami, Shahram; Frei, Oleksandr; Shadrin, Alexey; O'Connell, Kevin Sean & Smeland, Olav Bjerkehagen [Vis alle 10 forfattere av denne artikkelen] (2021). Shared genetic architecture between neuroticism, coronary artery disease and cardiovascular risk factors. Translational Psychiatry. ISSN 2158-3188. 11(1), s. 1–13. doi: 10.1038/s41398-021-01466-9. Fulltekst i vitenarkiv
• Sønderby, Ida Elken; van der Meer, Dennis; Moreau, Clara; Kaufmann, Tobias; Walters, G. Bragi & Ellegaard, Maria [Vis alle 76 forfattere av denne artikkelen] (2021). 1q21.1 distal copy number variants are associated with cerebral and cognitive alterations in humans. Translational Psychiatry. ISSN 2158-3188. 11. doi: 10.1038/s41398-021-01213-0. Fulltekst i vitenarkiv
• O'Connell, Kevin S.; Sønderby, Ida Elken; Frei, Oleksandr; van der Meer, Dennis; Athanasiu, Lavinia & Smeland, Olav Bjerkehagen [Vis alle 13 forfattere av denne artikkelen] (2021). Association between complement component 4A expression, cognitive performance and brain imaging measures in UK Biobank. Psychological Medicine. ISSN 0033-2917. s. 1–11. doi: 10.1017/S0033291721000179. Fulltekst i vitenarkiv
• Rødevand, Linn ; Bahrami, Shahram; Frei, Oleksandr; Chu, Yunhan; Shadrin, Alexey A. & O'Connell, Kevin Sean [Vis alle 14 forfattere av denne artikkelen] (2021). Extensive bidirectional genetic overlap between bipolar disorder and cardiovascular disease phenotypes. Translational Psychiatry. ISSN 2158-3188. 11. doi: 10.1038/s41398-021-01527-z. Fulltekst i vitenarkiv
• Cheng, Weiqiu; Frei, Oleksandr; van der Meer, Dennis; Wang, Yunpeng; O`Connell, Kevin & Chu, Yunhan [Vis alle 20 forfattere av denne artikkelen] (2021). Genetic Association Between Schizophrenia and Cortical Brain Surface Area and Thickness. JAMA psychiatry. ISSN 2168-6238. 78(9), s. 1020–1030. doi: 10.1001/jamapsychiatry.2021.1435. Fulltekst i vitenarkiv
• Gurholt, Tiril Pedersen; Kaufmann, Tobias; Frei, Oleksandr; Alnæs, Dag; Haukvik, Unn Kristin H. & van der Meer, Dennis [Vis alle 17 forfattere av denne artikkelen] (2021). Population-based body–brain mapping links brain morphology with anthropometrics and body composition. Translational Psychiatry. ISSN 2158-3188. doi: 10.1038/s41398-021-01414-7. Fulltekst i vitenarkiv
• Maximov, Ivan; van der Meer, Dennis; de Lange, Ann-Marie Glasø; Kaufmann, Tobias; Shadrin, Alexey A. & Frei, Oleksandr [Vis alle 8 forfattere av denne artikkelen] (2021). Fast qualitY conTrol meThod foR derIved diffUsion Metrics (YTTRIUM) in big data analysis: U.K. Biobank 18,608 example. Human Brain Mapping. ISSN 1065-9471. doi: 10.1002/hbm.25424. Fulltekst i vitenarkiv
• Bahrami, Shahram; Shadrin, Alexey A.; Frei, Oleksandr; O`Connell, Kevin; Bettella, Francesco & Krull, Florian [Vis alle 15 forfattere av denne artikkelen] (2021). Genetic loci shared between major depression and intelligence with mixed directions of effect. Nature Human Behaviour. ISSN 2397-3374. s. 1–9. doi: 10.1038/s41562-020-01031-2.
• Roelfs, Daniel; Alnæs, Dag; Frei, Oleksandr; van der Meer, Dennis; Smeland, Olav Bjerkehagen & Andreassen, Ole Andreas [Vis alle 8 forfattere av denne artikkelen] (2021). Phenotypically independent profiles relevant to mental health are genetically correlated. Translational Psychiatry. ISSN 2158-3188. 11(1). doi: 10.1038/s41398-021-01313-x. Fulltekst i vitenarkiv Vis sammendrag

  Genome-wide association studies (GWAS) and family-based studies have revealed partly overlapping genetic architectures between various psychiatric disorders. Given clinical overlap between disorders, our knowledge of the genetic architectures underlying specific symptom profiles and risk factors is limited. Here, we aimed to derive distinct profiles relevant to mental health in healthy individuals and to study how these genetically relate to each other and to common psychiatric disorders. Using independent component analysis, we decomposed self-report mental health questionnaires from 136,678 healthy individuals of the UK Biobank, excluding data from individuals with a diagnosed neurological or psychiatric disorder, into 13 distinct profiles relevant to mental health, capturing different symptoms as well as social and risk factors underlying reduced mental health. Utilizing genotypes from 117,611 of those individuals with White British ancestry, we performed GWAS for each mental health profile and assessed genetic correlations between these profiles, and between the profiles and common psychiatric disorders and cognitive traits. We found that mental health profiles were genetically correlated with a wide range of psychiatric disorders and cognitive traits, with strongest effects typically observed between a given mental health profile and a disorder for which the profile is common (e.g. depression symptoms and major depressive disorder, or psychosis and schizophrenia). Strikingly, although the profiles were phenotypically uncorrelated, many of them were genetically correlated with each other. This study provides evidence that statistically independent mental health profiles partly share genetic underpinnings and show genetic overlap with psychiatric disorders, suggesting that shared genetics across psychiatric disorders cannot be exclusively attributed to the known overlapping symptomatology between the disorders.

• Rødevand, Linn ; Bahrami, Shahram; Frei, Oleksandr; Lin, Aihua; Gani, Osman & Shadrin, Alexey A. [Vis alle 18 forfattere av denne artikkelen] (2021). Polygenic overlap and shared genetic loci between loneliness, severe mental disorders, and cardiovascular disease risk factors suggest shared molecular mechanisms. Translational Psychiatry. ISSN 2158-3188. 11(1). doi: 10.1038/s41398-020-01142-4. Fulltekst i vitenarkiv Vis sammendrag

  Clinical and epidemiological evidence suggest that loneliness is associated with severe mental disorders (SMDs) and increases the risk of cardiovascular disease (CVD). However, the mechanisms underlying the relationship between loneliness, SMDs, and CVD risk factors remain unknown. Here we explored overlapping genetic architecture and genetic loci shared between SMDs, loneliness, and CVD risk factors. We analyzed large independent genome-wide association study data on schizophrenia (SCZ), bipolar disorder (BD), major depression (MD), loneliness and CVD risk factors using bivariate causal mixture mode (MiXeR), which estimates the total amount of shared variants, and conditional false discovery rate to evaluate overlap in specific loci. We observed substantial genetic overlap between SMDs, loneliness and CVD risk factors, beyond genetic correlation. We identified 149 loci jointly associated with loneliness and SMDs (MD n = 67, SCZ n = 54, and BD n = 28), and 55 distinct loci jointly associated with loneliness and CVD risk factors. A total of 153 novel loneliness loci were found. Most of the shared loci possessed concordant effect directions, suggesting that genetic risk for loneliness may increase the risk of both SMDs and CVD. Functional analyses of the shared loci implicated biological processes related to the brain, metabolic processes, chromatin and immune system. Altogether, the study revealed polygenic overlap between loneliness, SMDs and CVD risk factors, providing new insights into their shared genetic architecture and common genetic mechanisms.

• Holland, Dominic; Frei, Oleksandr; Desikan, Rahul S.; Fan, Chun-Chieh; Shadrin, Alexey A. & Smeland, Olav Bjerkehagen [Vis alle 10 forfattere av denne artikkelen] (2020). Beyond SNP heritability: Polygenicity and discoverability of phenotypes estimated with a univariate Gaussian mixture model. PLoS Genetics. ISSN 1553-7390. doi: 10.1371/journal.pgen.1008612. Fulltekst i vitenarkiv
• Shadrin, Alexey A.; Mucha, Sören; Ellinghaus, David; Makarious, Mary B; Blauwendraat, Cornelis & Sreelatha, Ashwin [Vis alle 36 forfattere av denne artikkelen] (2020). Shared Genetics of Multiple System Atrophy and Inflammatory Bowel Disease. Movement Disorders. ISSN 0885-3185. doi: 10.1002/mds.28338. Fulltekst i vitenarkiv
• Shadrin, Alexey A.; Frei, Oleksandr; Smeland, Olav Bjerkehagen; Bettella, Francesco; O`Connell, Kevin & Gani, Osman [Vis alle 12 forfattere av denne artikkelen] (2020). Phenotype-specific differences in polygenicity and effect size distribution across functional annotation categories revealed by AI-MiXeR. Bioinformatics. ISSN 1367-4803. doi: 10.1093/bioinformatics/btaa568. Fulltekst i vitenarkiv
• Elvsåshagen, Torbjørn; Bahrami, Shahram; van der Meer, Dennis; Agartz, Ingrid; Alnæs, Dag & Barch, Deanna M. [Vis alle 76 forfattere av denne artikkelen] (2020). The genetic architecture of human brainstem structures and their involvement in common brain disorders. Nature Communications. ISSN 2041-1723. 11. doi: 10.1038/s41467-020-17376-1. Fulltekst i vitenarkiv
• Còrdova Palomera, Aldo; van der Meer, Dennis; Kaufmann, Tobias; Bettella, Francesco; Wang, Yunpeng & Alnæs, Dag [Vis alle 40 forfattere av denne artikkelen] (2020). Genetic control of variability in subcortical and intracranial volumes. Molecular Psychiatry. ISSN 1359-4184. s. 1–8. doi: 10.1038/s41380-020-0664-1. Fulltekst i vitenarkiv
• van der Meer, Dennis; Frei, Oleksandr; Kaufmann, Tobias; Shadrin, Alexey A.; Devor, Anna & Smeland, Olav Bjerkehagen [Vis alle 12 forfattere av denne artikkelen] (2020). Understanding the genetic determinants of the brain with MOSTest. Nature Communications. ISSN 2041-1723. 11:3512, s. 1–9. doi: 10.1038/s41467-020-17368-1.
• Smeland, Olav Bjerkehagen; Shadrin, Alexey A.; Bahrami, Shahram; Broce, Iris J.; Tesli, Martin Steen & Frei, Oleksandr [Vis alle 22 forfattere av denne artikkelen] (2020). Genome-wide Association Analysis of Parkinson’s Disease and Schizophrenia Reveals Shared Genetic Architecture and Identifies Novel Risk Loci. Biological Psychiatry. ISSN 0006-3223. 89(3), s. 227–235. doi: 10.1016/j.biopsych.2020.01.026. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Dale, Anders & Andreassen, Ole Andreas (2020). The polygenic architecture of schizophrenia — rethinking pathogenesis and nosology. Nature Reviews Neurology. ISSN 1759-4758. s. 1–14. doi: 10.1038/s41582-020-0364-0.
• Bahrami, Shahram; Steen, Nils Eiel; Shadrin, Alexey A.; O`Connell, Kevin; Frei, Oleksandr & Bettella, Francesco [Vis alle 13 forfattere av denne artikkelen] (2020). Shared genetic loci between body mass index and major psychiatric disorders: A genome-wide association study. JAMA psychiatry. ISSN 2168-6238. 77(5), s. 503–512. doi: 10.1001/jamapsychiatry.2019.4188.
• van der Meer, Dennis; Frei, Oleksandr; Kaufmann, Tobias; Chen, Chi-Hua; Thompson, Wesley K. & O'Connell, Kevin S. [Vis alle 11 forfattere av denne artikkelen] (2020). Quantifying the polygenic architecture of the human cerebral cortex: Extensive genetic overlap between cortical thickness and surface area. Cerebral Cortex. ISSN 1047-3211. 30(10), s. 5597–5603. doi: 10.1093/cercor/bhaa146. Fulltekst i vitenarkiv
• Lam, Max; Awasthi, Swapnil; Watson, Hunna J.; Goldstein, Jackie; Panagiotaropoulou, Georgia & Trubetskoy, Vassily [Vis alle 22 forfattere av denne artikkelen] (2019). RICOPILI: Rapid Imputation for COnsortias PIpeLIne. Bioinformatics. ISSN 1367-4803. 36(3), s. 930–933. doi: 10.1093/bioinformatics/btz633. Fulltekst i vitenarkiv
• O`Connell, Kevin; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr & Bettella, Francesco [Vis alle 24 forfattere av denne artikkelen] (2019). Identification of genetic loci shared between ADHD, intelligence and educational attainment . Biological Psychiatry. ISSN 0006-3223. 87(12), s. 1052–1062. doi: 10.1016/j.biopsych.2019.11.015. Fulltekst i vitenarkiv
• Watanabe, Kyoko; Stringer, Sven; Frei, Oleksandr; Mirkov, Maša Umićević; de Leeuw, Christiaan & Polderman, Tinca J.C. [Vis alle 10 forfattere av denne artikkelen] (2019). A global overview of pleiotropy and genetic architecture in complex traits. Nature Genetics. ISSN 1061-4036. 51(9), s. 1339–1348. doi: 10.1038/s41588-019-0481-0.
• O`Connell, Kevin; Shadrin, Alexey A.; Bahrami, Shahram; Smeland, Olav Bjerkehagen; Bettella, Francesco & Frei, Oleksandr [Vis alle 20 forfattere av denne artikkelen] (2019). Identification of genetic overlap and novel risk loci for attention-deficit/hyperactivity disorder and bipolar disorder. Molecular Psychiatry. ISSN 1359-4184. s. 1–11. doi: 10.1038/s41380-019-0613-z. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Shadrin, Alexey A.; O`Connell, Kevin; Fan, Chun Chieh & Bahrami, Shahram [Vis alle 11 forfattere av denne artikkelen] (2019). Discovery of shared genomic loci using the conditional false discovery rate approach. Human Genetics. ISSN 0340-6717. s. 1–10. doi: 10.1007/s00439-019-02060-2. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Fan, Chun-Chieh; Shadrin, Alexey A.; Dale, Anders & Andreassen, Ole Andreas (2019). The emerging pattern of shared polygenic architecture of psychiatric disorders, conceptual and methodological challenges. Psychiatric Genetics. ISSN 0955-8829. 29(5), s. 152–159. doi: 10.1097/YPG.0000000000000234. Fulltekst i vitenarkiv Vis sammendrag

  Genome-wide association studies have transformed psychiatric genetics and provided novel insights into the genetic etiology of psychiatric disorders. Two major discoveries have emerged; the disorders are polygenic, with a large number of common variants each with a small effect and many genetic variants influence more than one phenotype, suggesting shared genetic etiology. These concepts have the potential to revolutionize the current classification system with diagnostic categories and facilitate development of better treatments. However, to reach clinical impact, we need larger samples and better analytical tools, as most polygenic factors remain undetected. We here present statistical approaches designed to improve the yield of existing genome-wide association studies for polygenic phenotypes. We review how these tools have informed the current knowledge on the genetic architecture of psychiatric disorders, focusing on schizophrenia, bipolar disorder and major depression, and overlap with psychological and cognitive traits. We discuss application of statistical tools for stratification and prediction.

• Frei, Oleksandr; Holland, Dominic; Smeland, Olav Bjerkehagen; Shadrin, Alexey A.; Fan, Chun Chieh & Mæland, Steffen [Vis alle 12 forfattere av denne artikkelen] (2019). Bivariate causal mixture model quantifies polygenic overlap between complex traits beyond genetic correlation. Nature Communications. ISSN 2041-1723. 10(1). doi: 10.1038/s41467-019-10310-0. Fulltekst i vitenarkiv
• Drange, Ole Kristian; Smeland, Olav Bjerkehagen; Shadrin, Alexey A.; Finseth, Per Ivar; Witoelar, Aree & Frei, Oleksandr [Vis alle 52 forfattere av denne artikkelen] (2019). Genetic Overlap Between Alzheimer’s Disease and Bipolar Disorder Implicates the MARK2 and VAC14 Genes. Frontiers in Neuroscience. ISSN 1662-4548. 13. doi: 10.3389/fnins.2019.00220. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Shadrin, Alexey A.; O`Connell, Kevin & Savage, Jeanne E. [Vis alle 15 forfattere av denne artikkelen] (2019). Genome-wide analysis reveals extensive genetic overlap between schizophrenia, bipolar disorder, and intelligence. Molecular Psychiatry. ISSN 1359-4184. s. 1–10. doi: 10.1038/s41380-018-0332-x. Fulltekst i vitenarkiv
• van der Meer, Dennis; Rokicki, Jaroslav; Kaufmann, Tobias; Còrdova Palomera, Aldo; Moberget, Torgeir & Alnæs, Dag [Vis alle 54 forfattere av denne artikkelen] (2018). Brain scans from 21,297 individuals reveal the genetic architecture of hippocampal subfield volumes. Molecular Psychiatry. ISSN 1359-4184. s. 1–13. doi: 10.1038/s41380-018-0262-7. Fulltekst i vitenarkiv
• Srinivasan, Saurabh; Bettella, Francesco; Frei, Oleksandr; Hill, W. David; Wang, Yunpeng & Witoelar, Aree [Vis alle 17 forfattere av denne artikkelen] (2018). Enrichment of genetic markers of recent human evolution in educational and cognitive traits. Scientific Reports. ISSN 2045-2322. 8:12585, s. 1–9. doi: 10.1038/s41598-018-30387-9. Fulltekst i vitenarkiv
• Fan, Chun Chieh; Smeland, Olav Bjerkehagen; Schork, Andrew J.; Chen, Chi-Hua; Holland, Dominic & Lo, Min-Tzu [Vis alle 11 forfattere av denne artikkelen] (2018). Beyond heritability: Improving discoverability in imaging genetics. Human Molecular Genetics. ISSN 0964-6906. 27(1), s. R22–R28. doi: 10.1093/hmg/ddy082.
• Zuber, Verena; Jönsson, Erik Gunnar; Frei, Oleksandr; Witoelar, Aree; Thompson, Wesley Kurt & Schork, Andrew J. [Vis alle 18 forfattere av denne artikkelen] (2018). Identification of shared genetic variants between schizophrenia and lung cancer. Scientific Reports. ISSN 2045-2322. 674(8), s. 1–8. doi: 10.1038/s41598-017-16481-4. Fulltekst i vitenarkiv
• Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Zayats, Tetyana; Schork, Andrew J; Frei, Oleksandr & Bettella, Francesco [Vis alle 19 forfattere av denne artikkelen] (2017). Novel loci associated with attention-deficit/hyperactivity disorder are revealed by leveraging polygenic overlap with educational attainment. Journal of the American Academy of Child and Adolescent Psychiatry. ISSN 0890-8567. 57(2), s. 86–95. doi: 10.1016/j.jaac.2017.11.013. Fulltekst i vitenarkiv
• Winsvold, Bendik K S; Bettella, Francesco; Witoelar, Aree; Anttila, Verneri; Gormley, Padhraig & Kurth, Tobias [Vis alle 18 forfattere av denne artikkelen] (2017). Shared genetic risk between migraine and coronary artery disease: A genome-wide analysis of common variants. PLOS ONE. ISSN 1932-6203. s. 1–15. doi: 10.1371/journal.pone.0185663. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Wang, Yunpeng; Frei, Oleksandr; Li, Wen; Hibar, Derrek P & Franke, Barbara [Vis alle 13 forfattere av denne artikkelen] (2017). Genetic overlap between schizophrenia and volumes of hippocampus, putamen, and intracranial volume indicates shared molecular genetic mechanisms. Schizophrenia Bulletin. ISSN 0586-7614. 44(4), s. 854–864. doi: 10.1093/schbul/sbx148.
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Kauppi, Karolina; Hill, W. David; Li, Wen & Wang, Yunpeng [Vis alle 22 forfattere av denne artikkelen] (2017). Identification of genetic loci jointly influencing schizophrenia risk and the cognitive traits of verbal-numerical reasoning, reaction time, and general cognitive function. JAMA psychiatry. ISSN 2168-6238. 74(10), s. 1065–1075. doi: 10.1001/jamapsychiatry.2017.1986. Fulltekst i vitenarkiv
• Smeland, Olav Bjerkehagen; Wang, Yunpeng; Lo, Min-Tzu; Li, Wen; Frei, Oleksandr & Witoelar, Aree [Vis alle 13 forfattere av denne artikkelen] (2017). Identification of genetic loci shared between schizophrenia and the Big Five personality traits. Scientific Reports. ISSN 2045-2322. 7:2222(1), s. 1–9. doi: 10.1038/s41598-017-02346-3. Fulltekst i vitenarkiv

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• Maximov, Ivan; van der Meer, Dennis; de Lange, Ann-Marie Glasø; Kaufmann, Tobias; Shadrin, Alexey & Frei, Oleksandr [Vis alle 8 forfattere av denne artikkelen] (2021). YTTRIUM: QC algorithm for the processed diffusion maps in UK Biobank 18608 sample.
• Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Shadrin, Alexey; O'Connell, Kevin & Savage, Jeanne [Vis alle 15 forfattere av denne artikkelen] (2019). Correction: Genome-wide analysis reveals extensive genetic overlap between schizophrenia, bipolar disorder, and intelligence (Molecular Psychiatry, (2019), 10.1038/s41380-018-0332-x). Molecular Psychiatry. ISSN 1359-4184. 25(4), s. 914–914. doi: 10.1038/s41380-019-0456-7.
• Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Shadrin, Alexey A.; Savage, Jeanne E. & Watanabe, Kyoko [Vis alle 14 forfattere av denne artikkelen] (2018). Genome-wide analysis reveals extensive genetic overlap between schizophrenia, bipolar disorder and intelligence .
• Smeland, Olav Bjerkehagen; Wang, Yunpeng; Frei, Oleksandr; Li, Wen; Hibar, Derrek & Franke, Barbara [Vis alle 13 forfattere av denne artikkelen] (2017). Conditional false discovery rate analysis of genome-wide association studies uncovers genetic loci shared between schizophrenia and volumes of hippocampus, putamen and intracranial volume.
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Wang, Yunpeng; Fan, Chun Chieh; Shadrin, Alexey A. & Li, Wen [Vis alle 13 forfattere av denne artikkelen] (2017). C-Reactive Protein Levels and Schizophrenia Share Genetic Influences.
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Wang, Yunpeng; Fan, Chun Chieh; Alexey, Shadrin & Li, Wen [Vis alle 13 forfattere av denne artikkelen] (2017). Increased discovery of risk loci for bipolar disorder by leveraging prior probabilities of true associations using the covariate modulated mixture model (CM3).
• Smeland, Olav Bjerkehagen; Frei, Oleksandr; Wang, Yunpeng; Dale, Anders & Andreassen, Ole Andreas (2017). Combined Analysis of Large Genetic Samples. New Statistical Approaches Improve Gene Discovery.
• Smeland, Olav Bjerkehagen; Kauppi, Karolina; Wang, Yunpeng; Frei, Oleksandr; Li, Wen & Hill, David W [Vis alle 17 forfattere av denne artikkelen] (2016). Schizophrenia and general cognitive function share genetic influences.

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