55 results match your criteria: "Biomedical and Translational Informatics Institute[Affiliation]"

A retrospective review of the association between maternal body mass index and the risk of congenital anomalies.

Congenit Anom (Kyoto)

January 2024

Women's Health Service Line, Division of Maternal-Fetal Medicine, Geisinger, Danville, Pennsylvania, USA.

The objective of the study was to examine the association of congenital anomalies with the specific classes of pre-pregnancy BMI. An IRB-approved retrospective cohort study was performed using the data from the Natality Public Use File from the National Center for Health Statistics (2019). We included all singleton live births and excluded pregnancies with suspected or confirmed chromosomal abnormalities and people with pre-existing diabetes mellitus and missing pertinent data.

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  • Common SNPs may account for 40-50% of human height variation, and this study identifies 12,111 SNPs linked to height from a large sample of 5.4 million individuals.
  • These SNPs cluster in 7,209 genomic segments, encompassing about 21% of the genome and showing varying densities enriched in relevant genes.
  • While these SNPs explain a substantial portion of height variance in European populations (40-45%), their predictive power is lower (10-24%) in other ancestries, suggesting a need for more research to enhance understanding in diverse populations.
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  • The study investigates the genetic factors contributing to the decline in estimated glomerular filtration rate (eGFR), a key indicator of kidney function, by analyzing data from 62 longitudinal studies involving over 343,000 participants.
  • Twelve significant genetic variants related to eGFR decline were identified, with most showing interaction effects based on age, which highlights how genetic influences on kidney function change as individuals get older.
  • The findings emphasize that individuals with certain genetic profiles face higher risks for kidney failure and acute kidney injury, providing valuable insights that could aid in drug development and strategies for managing kidney health.
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  • Reduced glomerular filtration rate (GFR) is a precursor to kidney failure, influenced by factors like genetics and diabetes (DM), but the interaction between these factors is not well understood.
  • A large-scale genome-wide association study (GWAS) analyzed eGFR across almost 1.5 million individuals, revealing distinct genetic loci that differ between those with and without diabetes.
  • The findings identified potential new targets for drug development aimed at protecting kidney function, highlighting that many drug interventions could be effective for both diabetic and non-diabetic populations.
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A retrospective review of pregnancy outcomes in women with uncomplicated mild to moderate chronic hypertension.

J Matern Fetal Neonatal Med

December 2022

Division of Maternal-Fetal Medicine, Women's Health Service Line, Danville, PA, USA.

Objective: To examine pregnancy complications in women with uncomplicated mild-moderate chronic hypertension (CHTN) treated with antihypertensives prior to 20 weeks compared to those not on antihypertensives.

Study Design: This retrospective cohort study examined singleton pregnancies of women with mild-moderate CHTN who delivered from 01/2014-3/2019. Pregnancies complicated by hypertension at ≥ 20 weeks, end organ damage, preexisting diabetes mellitus, early-onset gestational diabetes, multifetal gestation, and fetal anomalies were excluded.

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  • Primary open-angle glaucoma (POAG) is a heritable eye condition leading to blindness and the study involved a large genetic analysis of over 34,000 patients and nearly 350,000 controls from different ethnic backgrounds.
  • Researchers identified 44 new genetic risk factors for POAG and confirmed 83 previously known ones, finding consistent impacts across various ancestries.
  • The study also suggests that certain genes could play significant roles in the disease's development, indicating potential new drug treatments targeting these genetic risk factors.
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Increasingly, clinical phenotypes with matched genetic data from bio-bank linked electronic health records (EHRs) have been used for pleiotropy analyses. Thus far, pleiotropy analysis using individual-level EHR data has been limited to data from one site. However, it is desirable to integrate EHR data from multiple sites to improve the detection power and generalizability of the results.

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  • - The study investigates the genetic factors contributing to the rapid decline in glomerular filtration rate (eGFRcrea), using data from 42 genome-wide association studies to analyze genetic loci linked to this decline.
  • - Two specific definitions of rapid eGFRcrea decline are examined, leading to the identification of seven independent genetic variants associated with this condition, including significant findings near three novel loci.
  • - The research suggests that individuals with a higher genetic risk for kidney function decline are more likely to experience acute kidney injury, indicating that these identified genetic loci could help in developing targeted therapies and identifying at-risk individuals.
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Electronic health records are an increasingly important resource for understanding the interactions between patient health, environment, and clinical decisions. In this paper we report an empirical study of predictive modeling of seven patient outcomes using three state-of-the-art machine learning methods. Our primary goal is to validate the models by interpreting the importance of predictors in the final models.

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Background: Major Depressive Disorder (MDD) is one of the most common mental illnesses and a leading cause of disability worldwide. Electronic Health Records (EHR) allow researchers to conduct unprecedented large-scale observational studies investigating MDD, its disease development and its interaction with other health outcomes. While there exist methods to classify patients as clear cases or controls, given specific data requirements, there are presently no simple, generalizable, and validated methods to classify an entire patient population into varying groups of depression likelihood and severity.

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Gastric outlet obstruction (GOO) is characterized by epigastric pain and postprandial vomiting secondary to mechanical obstruction. Management of GOO is usually focused on alleviating the symptoms of obstruction and can be achieved by surgical gastrojejunostomy or enteral stenting. Recent studies have shown success with EUS-guided gastroenterostomy (EUS-GE) in the management of GOO but data is limited.

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The Reply.

Am J Med

October 2019

Biomedical and Translational Informatics Institute, Geisinger Health System, Danville, Pa; Geisinger Neuroscience Institute, Geisinger Health System, Danville, Pa; University of Tennessee Health Science Center, Memphis, Tn; Biocomplexity Institute, Virginia Tech, Blacksburg, Va.

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  • Arrhythmogenic right ventricular cardiomyopathy (ARVC) is linked to specific gene variants, but their occurrence and effects in the general population remain unclear.
  • Researchers analyzed data from 61,019 individuals to find loss-of-function (LOF) variants related to ARVC and assessed their clinical significance through ECG and echocardiogram evaluations.
  • The study found ARVC variants in 0.23% of individuals, but these individuals generally showed no significant heart-related symptoms, indicating a low clinical impact and underscoring the need for further detailed studies.
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Elevated serum urate levels cause gout and correlate with cardiometabolic diseases via poorly understood mechanisms. We performed a trans-ancestry genome-wide association study of serum urate in 457,690 individuals, identifying 183 loci (147 previously unknown) that improve the prediction of gout in an independent cohort of 334,880 individuals. Serum urate showed significant genetic correlations with many cardiometabolic traits, with genetic causality analyses supporting a substantial role for pleiotropy.

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Genome-wide association meta-analyses and fine-mapping elucidate pathways influencing albuminuria.

Nat Commun

September 2019

Institute of Genetic Epidemiology, Department of Biometry, Epidemiology and Medical Bioinformatics, Faculty of Medicine and Medical Center - University of Freiburg, Freiburg, Germany.

Article Synopsis
  • Increased urinary albumin-to-creatinine ratio (UACR) is linked to higher risks of kidney disease and cardiovascular issues, yet the underlying causes are not fully understood.
  • A large meta-analysis identified 68 genetic loci associated with UACR, highlighting connections to conditions like proteinuria, hyperlipidemia, and hypertension.
  • Specific genes (such as TGFB1 and PRKCI) were implicated in kidney function, and experiments showed that disrupting these genes in fruit flies affects albumin processing, suggesting new avenues for research to lower albumin levels.
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  • The study examined the link between left ventricular ejection fraction (LVEF) and survival rates in a large group of patients over 20 years, using a multitude of echocardiogram data.
  • Findings revealed a u-shaped relationship between LVEF and mortality, with the lowest risk of death at LVEF levels of 60-65%, and increased risks for values above 70% and below 35-40%.
  • The results suggest that having an LVEF outside the 60-65% range is linked to worse survival outcomes, indicating the potential identification of a new heart function phenotype associated with high LVEF.
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  • Genome-first approaches link genetic sequencing with phenotypes to better understand rare variants in diseases, specifically focusing on loss-of-function variants in the LMNA gene that cause cardiomyopathy.
  • By analyzing exome sequencing data from 11,451 individuals, researchers found a significant association between LMNA gene variants and cardiomyopathy, as well as links to cardiac conduction disorders and chronic kidney disease.
  • The study highlights that pathogenic LMNA variants are often underdiagnosed in cardiomyopathy patients and emphasizes the importance of using aggregated rare variants to discover new insights into human genetic diseases.
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Endometrial cancer is the fourth most commonly diagnosed cancer in women. Family history is a known risk factor for endometrial cancer. The incidence of endometrial cancer in a first-degree relative elevates the relative risk to range between 1.

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A -Ethnic Genome-Wide Association Study of Uterine Fibroids.

Front Genet

June 2019

Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, Nashville, TN, United States.

Uterine fibroids affect up to 77% of women by menopause and account for up to $34 billion in healthcare costs each year. Although fibroid risk is heritable, genetic risk for fibroids is not well understood. We conducted a two-stage case-control meta-analysis of genetic variants in European and African ancestry women with and without fibroids classified by a previously published algorithm requiring pelvic imaging or confirmed diagnosis.

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Chronic kidney disease (CKD) is responsible for a public health burden with multi-systemic complications. Through trans-ancestry meta-analysis of genome-wide association studies of estimated glomerular filtration rate (eGFR) and independent replication (n = 1,046,070), we identified 264 associated loci (166 new). Of these, 147 were likely to be relevant for kidney function on the basis of associations with the alternative kidney function marker blood urea nitrogen (n = 416,178).

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Endometrial cancer (EMCA) is a clinically heterogeneous disease. Previously, we tested the efficacy of Verteporfin (VP) in EMCA cells and observed cytotoxic and anti-proliferative effects. In this study, we analyzed RNA sequencing data to investigate the comprehensive transcriptomic landscape of VP treated Type 1 EMCA cell lines, including HEC-1-A and HEC-1-B.

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Artificial Intelligence Transforms the Future of Health Care.

Am J Med

July 2019

Biomedical and Translational Informatics Institute, Geisinger Health System, Danville, Penn; Biocomplexity Institute, Virginia Tech, Blacksburg, Va. Electronic address:

Life sciences researchers using artificial intelligence (AI) are under pressure to innovate faster than ever. Large, multilevel, and integrated data sets offer the promise of unlocking novel insights and accelerating breakthroughs. Although more data are available than ever, only a fraction is being curated, integrated, understood, and analyzed.

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Identification of exon skipping events associated with Alzheimer's disease in the human hippocampus.

BMC Med Genomics

January 2019

Center for Neuroimaging, Department of Radiology and Imaging Sciences and Indiana Alzheimer Disease Center, Indiana University School of Medicine, Indianapolis, IN, USA.

Background: At least 90% of human genes are alternatively spliced. Alternative splicing has an important function regulating gene expression and miss-splicing can contribute to risk for human diseases, including Alzheimer's disease (AD).

Methods: We developed a splicing decision model as a molecular mechanism to identify functional exon skipping events and genetic variation affecting alternative splicing on a genome-wide scale by integrating genomics, transcriptomics, and neuroimaging data in a systems biology approach.

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Real world scenarios in rare variant association analysis: the impact of imbalance and sample size on the power in silico.

BMC Bioinformatics

January 2019

Genomics and Computational Biology Graduate Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.

Background: The development of sequencing techniques and statistical methods provides great opportunities for identifying the impact of rare genetic variation on complex traits. However, there is a lack of knowledge on the impact of sample size, case numbers, the balance of cases vs controls for both burden and dispersion based rare variant association methods. For example, Phenome-Wide Association Studies may have a wide range of case and control sample sizes across hundreds of diagnoses and traits, and with the application of statistical methods to rare variants, it is important to understand the strengths and limitations of the analyses.

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