Publications by authors named "Higginbotham E"

Purpose: To determine the rate of visual field (VF) loss before and after the diagnosis of primary open angle glaucoma (POAG) in the Ocular Hypertension Treatment Study (OHTS).

Design: Pre-specified analyses of data collected prospectively in a clinical trial with extended follow-up.

Setting And Participants: Participants who developed POAG during OHTS 1 and 2 (February 1994 to December 2008) constitute an inception cohort.

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  • Rare structural variations, particularly copy number variants, are found in 5%-10% of autism spectrum disorder (ASD) families, often requiring advanced methods for precise detection and characterization of genomic breakpoints.
  • Using Oxford Nanopore's PromethION long-read genome sequencing, researchers successfully identified and characterized complex genomic rearrangements (CGRs) in five ASD-affected families, resolving all breakpoint junctions but leaving some genomic architectures unresolved.
  • The study revealed potential fusion genes due to duplications and identified a shared rearrangement in two families, suggesting a common ancestor, while also analyzing methylation patterns to understand gene activity related to these rearrangements.
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Importance: If preperimetric glaucoma reduces patient-reported vision-related quality of life (VRQoL), clinicians might consider earlier and more aggressive treatment of some patients with ocular hypertension and early glaucoma.

Objective: To determine the impact of preperimetric glaucoma and early glaucomatous visual field (VF) loss on participants' VRQoL compared with participants who did not develop glaucoma in the Ocular Hypertension Treatment Study (OHTS).

Design, Setting, And Participants: This cross-sectional study used data from participants enrolled in the OHTS from 1994 to 1996 who completed 20-year examination follow-up and VRQoL surveys from January 7, 2016, to November 19, 2019.

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We performed whole-genome sequencing (WGS) in 327 children with cerebral palsy (CP) and their biological parents. We classified 37 of 327 (11.3%) children as having pathogenic/likely pathogenic (P/LP) variants and 58 of 327 (17.

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  • - The study explores pre-mRNA splicing, its critical role in neurodevelopment, and how mutations in spliceosome-related genes U2AF2 and PRPF19 contribute to neurodevelopmental disorders (NDDs).
  • - Researchers found multiple pathogenic variants in U2AF2 and PRPF19 across unrelated individuals, with functional analysis showing that specific U2AF2 variants disrupted normal splicing and neuritogenesis in human neurons.
  • - Additionally, investigations in Drosophila models revealed that the loss of function in U2AF2 and PRPF19 caused severe developmental defects and social issues, pointing to a genetic network wherein splicing factors like Rbfox1 play a significant role in brain development and function. *
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Purpose: Visual impairment (VI) negatively impacts the quality of lives of individuals and the optimal health of populations, creating both human and financial costs. Yet, VI has not risen to a level that is considered a priority in population health. This analysis assesses the evidence currently available for strengthening the value proposition for eye health, particularly the demographic characteristics and patient-centered outcomes found in clinical research.

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Purpose: The murder of George Floyd in 2020 prompted a national demand for cultural transformation to confront the systemic racism prevalent in the country. Academic medical centers were not exempt from this urgent call. This article evaluates the efficacy of a strategic process in fostering cultural transformation within an academic medical system.

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  • Most neonatal and infantile-onset epilepsies are thought to have genetic causes, and early genetic testing could help improve treatment and outcomes for affected infants.
  • The Gene-STEPS study involved four pediatric centers across Australia, Canada, the UK, and the USA, where researchers collected blood samples and clinical data from infants under 12 months old who had new-onset epilepsy or complex febrile seizures.
  • Out of 100 enrolled infants, 43 (43%) received genetic diagnoses through rapid genome sequencing, showing the effectiveness of this method in identifying underlying genetic factors.
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To mitigate the structural and institutional biases that contribute to inequities in health, we need a diverse cadre of individuals to feel included and advance within our field in order to bring a multicultural set of perspectives to the studies we conduct, the science we generate, the health and academic systems we design, and the medical and scientific knowledge we impart. There has been increasing focus on diversity, inclusion, and equity in recent years; however, often these terms are presented without adequate precision and, therefore, the inability to effectively operationalize inclusion and achieve diversity within organizations. This narrative review details several key studies, with the primary objective of presenting a roadmap to guide defining, measuring, and operationalizing inclusion within work and learning environments.

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Article Synopsis
  • - The study examined gene copy number variation (CNV) in a large group of 7,100 children and youth, focusing on its impact on mental health, cognitive functioning, and physical health.
  • - Clinically relevant CNVs were found in 3.9% of participants and were linked to higher ADHD traits, cognitive deficits, and increased occurrence of specific mental health diagnoses like ADHD, autism spectrum disorder, and learning disorders.
  • - The research highlights the role of rare genetic deletions in brain-related gene sets, suggesting they contribute to ADHD characteristics, and sets a baseline for understanding genetic factors in mental health issues among youth during a growing crisis.
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Problem: To the best of our knowledge, there are no standard accountability measures for diversity efforts at the departmental level. Therefore, the purpose of this study is to evaluate a multiprong report card as a structure for evaluation, tracking, and reporting as well as to examine any relationships between expenditures and outcomes.

Approach: We instituted an intervention that offered leadership a report card of metrics related to diversity efforts.

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Copy number variants (CNVs) represent major etiologic factors in rare genetic diseases. Current clinical CNV interpretation workflows require extensive back-and-forth with multiple tools and databases. This increases complexity and time burden, potentially resulting in missed genetic diagnoses.

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  • Full understanding of autism spectrum disorder (ASD) genetics requires whole-genome sequencing (WGS), highlighted by the latest Autism Speaks MSSNG resource that includes data from over 11,000 individuals.
  • The study found ASD-associated rare genetic variants in about 14% of individuals with ASD, examining data from MSSNG and the Simons Simplex Collection, which suggests similar prevalence in both datasets.
  • The identified variants were mostly nuclear (98%) with a small fraction being mitochondrial, and the research aims to help explore genetic links to ASD traits and identify causes for the 85% of ASD cases that currently lack identified genetic causes.
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Study Objective: Despite the popularity of vaping and electronic vapor delivery systems (EVDS), the healthcare community remains largely unfamiliar with their potential to induce harm. The purpose of this systematic review is to identify how EVDS use affects the pulmonary system in order to support future anesthetic guidelines for patients who vape.

Design: Systematic Review.

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Oligogenic inheritance of autism spectrum disorder (ASD) has been supported by several studies. However, little is known about how the risk variants interact and converge on causative neurobiological pathways. We identified in an ASD proband deleterious compound heterozygous missense variants in the Reelin (RELN) gene, and a de novo splicing variant in the Cav3.

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Purpose: Enhancing diversity on boards has been linked to greater profitability and innovation. Unfortunately, there remains an underrepresentation of women in executive management and leadership positions in the ophthalmic corporate world. The purpose of these analyses was to examine the gender composition of directors for boards associated with the discipline of ophthalmology.

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Importance: Organizational culture and workplace interactions may enhance or adversely impact the wellness of all members of learning and work environments, yet a nuanced understanding of how such experiences within health care organizations impact the health and wellness of their membership is lacking.

Objective: To identify and characterize the reported health and wellness outcomes associated with perceived discrimination among academic medicine faculty, staff, and students.

Design, Setting, And Participants: This qualitative study analyzed anonymously submitted written narratives from 2016 that described experiences related to inclusion in the workplace or lack thereof.

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Copy number variants (CNVs) are recognized as a crucial genetic cause of neurodevelopmental disorders (NDDs). Chromosomal microarray analysis (CMA), the first-tier diagnostic test for individuals with NDDs, has been utilized to detect CNVs in clinical practice, but most reports are still from populations of European ancestry. To contribute more worldwide clinical genomics data, we investigated the genetic etiology of 410 Han Chinese patients with NDDs (151 with autism and 259 with unexplained intellectual disability (ID) and developmental delay (DD)) using CMA (Affymetrix) after G-banding karyotyping.

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In more than one-third of primary immunodeficiency (PID) patients, extensive genetic analysis including whole-exome sequencing (WES) fails to identify the genetic defect. Whole-genome sequencing (WGS) is able to detect variants missed by other genomics platforms, enabling the molecular diagnosis of otherwise unresolved cases. Here, we report two siblings, offspring of consanguineous parents, who experienced similar severe events encompassing early onset of colitis, lymphoproliferation, and hypogammaglobulinemia, typical of lipopolysaccharide-responsive and beige-like anchor (LRBA) or cytotoxic T lymphocyte antigen 4 (CTLA4) deficiencies.

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Background: Ensuring equitable care remains a critical issue for healthcare systems. Nationwide evidence highlights the persistence of healthcare disparities and the need for research-informed approaches for reducing them at the local level.

Objective: To characterize key contributors in racial/ethnic disparities in emergency department (ED) throughput times.

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Importance: Ocular hypertension is an important risk factor for the development of primary open-angle glaucoma (POAG). Data from long-term follow-up can be used to inform the management of patients with ocular hypertension.

Objective: To determine the cumulative incidence and severity of POAG after 20 years of follow-up among participants in the Ocular Hypertension Treatment Study.

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