scholarly journals Polygenic risk for schizophrenia, transition and cortical gyrification: a high-risk study

2017 ◽  
Vol 48 (9) ◽  
pp. 1532-1539 ◽  
Author(s):  
E. Neilson ◽  
C. Bois ◽  
T.-K. Clarke ◽  
L. Hall ◽  
E. C. Johnstone ◽  
...  
Keyword(s):  
High Risk ◽  
Risk Score ◽  
Familial Risk ◽  
Positive Association ◽  
Polygenic Risk Score ◽  
Polygenic Risk ◽  
Score Analysis ◽  
Increased Risk ◽  
Heritable Disorder ◽  
Diagnostic Symptoms

AbstractBackgroundSchizophrenia is a highly heritable disorder, linked to several structural abnormalities of the brain. More specifically, previous findings have suggested that increased gyrification in frontal and temporal regions are implicated in the pathogenesis of schizophrenia.MethodsThe current study included participants at high familial risk of schizophrenia who remained well (n= 31), who developed sub-diagnostic symptoms (n= 28) and who developed schizophrenia (n= 9) as well as healthy controls (HC) (n= 16). We first tested whether individuals at high familial risk of schizophrenia carried an increased burden of trait-associated alleles using polygenic risk score analysis. We then assessed the extent to which polygenic risk was associated with gyral folding in the frontal and temporal lobes.ResultsWe found that individuals at high familial risk of schizophrenia who developed schizophrenia carried a significantly greater burden of risk-conferring variants for the disorder compared to those at high risk (HR) who developed sub-diagnostic symptoms or remained well and HC. Furthermore, within the HR cohort, there was a significant and positive association between schizophrenia polygenic risk score and bilateral frontal gyrification.ConclusionsThese results suggest that polygenic risk for schizophrenia impacts upon early neurodevelopment to confer greater gyral folding in adulthood and an increased risk of developing the disorder.

scholarly journals POLYGENIC RISK SCORE ANALYSIS OF ALZHEIMER’S DISEASE IN CASES WITHOUT APOE4 OR APOE2 ALLELES

2018 ◽  
pp. 1-4
Author(s):  
V. Escott-Price ◽  
A. Myers ◽  
M. Huentelman ◽  
M. Shoai ◽  
J. Hardy
Keyword(s):  
Alzheimer’S Disease ◽  
Alzheimer's Disease ◽  
Risk Score ◽  
Clinical Trial Design ◽  
Polygenic Risk Score ◽  
Carrier Status ◽  
Predictive Utility ◽  
Polygenic Risk ◽  
Score Analysis ◽  
E4 Allele

The We and others have previously shown that polygenic risk score analysis (PRS) has considerable predictive utility for identifying those at high risk of developing Alzheimer’s disease (AD) with an area under the curve (AUC) of >0.8. However, by far the greatest determinant of this risk is the apolipoprotein E locus with the E4 allele alone giving an AUC of ~0.68 and the inclusion of the protective E2 allele increasing this to ~0.69 in a clinical cohort. An important question is to determine how good PRS is at predicting risk in those who do not carry the E4 allele (E3 homozygotes, E3E2 and E2E2) and in those who carry neither the E4 or E2 allele (i.e. E3 homozygotes). Previous studies have shown that PRS remains a significant predictor of AD risk in clinical cohorts after controlling for APOE ε4 carrier status. In this study we assess the accuracy of PRS prediction in a cohort of pathologically confirmed AD cases and controls. The exclusion of APOE4 carriers has surprisingly little effect on the PRS prediction accuracy (AUC ~0.83 [95% CI: 0.80-0.86]), and the accuracy remained higher than that in clinical cohorts with APOE included as a predictor. From a practical perspective this suggests that PRS analysis will have predictive utility even in E4 negative individuals and may be useful in clinical trial design.

scholarly journals A polygenic risk score analysis of psychosis endophenotypes across brain functional, structural, and cognitive domains

2017 ◽  
Vol 177 (1) ◽  
pp. 21-34 ◽  
Author(s):  
Siri Ranlund ◽  
Stella Calafato ◽  
Johan H. Thygesen ◽  
Kuang Lin ◽  
Wiepke Cahn ◽  
...  
Keyword(s):  
Risk Score ◽  
Polygenic Risk Score ◽  
Cognitive Domains ◽  
Polygenic Risk ◽  
Score Analysis

Polygenic risk score for breast cancer in high-risk women.

2018 ◽  
Vol 36 (15_suppl) ◽  
pp. 1508-1508 ◽  
Author(s):  
Mary Helen Black ◽  
Shuwei Li ◽  
Holly LaDuca ◽  
Jefferey Chen ◽  
Robert Hoiness ◽  
...  
Keyword(s):  
Breast Cancer ◽  
High Risk ◽  
Risk Score ◽  
Polygenic Risk Score ◽  
Polygenic Risk ◽  
High Risk Women

scholarly journals Phenotypic Differences Between Polygenic and Monogenic Hypobetalipoproteinemia

2020 ◽  
Author(s):  
Antoine Rimbert ◽  
Xavier Vanhoye ◽  
Dramane Coulibaly ◽  
Marie Marrec ◽  
Matthieu Pichelin ◽  
...  
Keyword(s):  
Liver Injury ◽  
Risk Score ◽  
Clinical Care ◽  
Liver Steatosis ◽  
Genetic Diagnosis ◽  
Density Lipoprotein ◽  
Polygenic Risk Score ◽  
Nonalcoholic Fatty Liver ◽  
Polygenic Risk ◽  
Increased Risk

Objective: Primary hypobetalipoproteinemia is characterized by LDL-C (low-density lipoprotein cholesterol) concentrations below the fifth percentile. Primary hypobetalipoproteinemia mostly results from heterozygous mutations in the APOB and PCSK9 genes, and a polygenic origin is hypothesized in the remaining cases. Hypobetalipoproteinemia patients present an increased risk of nonalcoholic fatty liver disease and steatohepatitis. Here, we compared hepatic alterations between monogenic, polygenic, and primary hypobetalipoproteinemia of unknown cause. Approach and Results: Targeted next-generation sequencing was performed in a cohort of 111 patients with hypobetalipoproteinemia to assess monogenic and polygenic origins using an LDL-C-dedicated polygenic risk score. Forty patients (36%) had monogenic hypobetalipoproteinemia, 38 (34%) had polygenic hypobetalipoproteinemia, and 33 subjects (30%) had hypobetalipoproteinemia from an unknown cause. Patients with monogenic hypobetalipoproteinemia had lower LDL-C and apolipoprotein B plasma levels compared with those with polygenic hypobetalipoproteinemia. Liver function was assessed by hepatic ultrasonography and liver enzymes levels. Fifty-nine percent of patients with primary hypobetalipoproteinemia presented with liver steatosis, whereas 21% had increased alanine aminotransferase suggestive of liver injury. Monogenic hypobetalipoproteinemia was also associated with an increased prevalence of liver steatosis (81% versus 29%, P <0.001) and liver injury (47% versus 0%) compared with polygenic hypobetalipoproteinemia. Conclusions: This study highlights the importance of genetic diagnosis in the clinical care of primary hypobetalipoproteinemia patients. It shows for the first time that a polygenic origin of hypobetalipoproteinemia is associated with a lower risk of liver steatosis and liver injury versus monogenic hypobetalipoproteinemia. Thus, polygenic risk score is a useful tool to establish a more personalized follow-up of primary hypobetalipoproteinemia patients.

T80SCHIZOPHRENIA POLYGENIC RISK SCORE CORRELATES WITH DECREASED COGNITIVE FUNCTIONS IN ULTRA-HIGH-RISK INDIVIDUALS FOR PSYCHOSIS

2019 ◽  
Vol 29 ◽  
pp. S258-S259
Author(s):  
Qin He ◽  
Oussama Kebir ◽  
Gabrielle Houle ◽  
Calwing Liao ◽  
Patrick A. Dion ◽  
...  
Keyword(s):  
High Risk ◽  
Risk Score ◽  
Cognitive Functions ◽  
Polygenic Risk Score ◽  
Polygenic Risk ◽  
Ultra High Risk

scholarly journals Polygenic risk score-analysis of thromboembolism in patients with acute lymphoblastic leukemia

2020 ◽  
Vol 196 ◽  
pp. 15-20
Author(s):  
Kirsten Brunsvig Jarvis ◽  
Rikke Linnemann Nielsen ◽  
Ramneek Gupta ◽  
Freja Dahl Hede ◽  
Pasi Huttunen ◽  
...  
Keyword(s):  
Acute Lymphoblastic Leukemia ◽  
Risk Score ◽  
Lymphoblastic Leukemia ◽  
Polygenic Risk Score ◽  
Polygenic Risk ◽  
Score Analysis

P.0580 A polygenic risk score predicts an increased risk of depression in mentally healthy young adults

2021 ◽  
Vol 53 ◽  
pp. S425-S426
Author(s):  
A. Kazantseva ◽  
Y. Davydova ◽  
R. Enikeeva ◽  
R. Mustafin ◽  
M. Lobaskova ◽  
...  
Keyword(s):  
Young Adults ◽  
Risk Score ◽  
Polygenic Risk Score ◽  
Polygenic Risk ◽  
Increased Risk
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