Publications by authors named "Brittany Holmes"

Purpose: NFE2L2/KEAP1/CUL3 mutations have been validated for radiation resistance in cell-based assays and animal models. However, clinical validation of these biomarkers has been challenging due to multimodality treatment regimens. This study aims to investigate the association between NFE2L2/KEAP1/CUL3 mutations and patient outcomes, including local failure (LF), locoregional failures (LRF), disease-free survival (DFS) and overall survival (OS), using samples from a phase III trial in which patients were treated with radiation monotherapy at 2 controlled doses.

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Acute liver failure is rare in the neonatal and infant population; however, when encountered, it requires timely diagnosis, management, and identification of the underlying etiology to provide the best clinical outcomes. Here, we present a case of new-onset liver failure in a 4-month-old infant. She had previously been diagnosed with neonatal mucocutaneous herpes simplex virus disease, but had been healthy in the interval, and was referred to our hospital for evaluation of possible need for liver transplantation because of a rapidly progressing pace of disease.

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Newborn screening for Phenylketonuria (PKU) began in 1963, and since then knowledge and treatment recommendations have evolved. In the decades following newborn screening for PKU, individual and family experiences varied widely. We present narratives by people living with PKU during these years, including individuals actively following in PKU clinic and those who have been out of PKU clinic for many years.

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Introduction: Understanding the pharmacokinetics and pharmacodynamics of fentanyl in horses is crucial for optimizing pain management strategies in veterinary medicine.

Methods: Six adult horses were enrolled in a randomized crossover design. Treatments included: placebo, two 100 mcg/h patches (LDF), four 100 mcg/h patches (MDF), and six 100 mcg/h patches (HDF).

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Background: Pegvaliase, an enzyme substitution therapy, is a treatment option for phenylketonuria (PKU). Due to the neuropathophysiology and disease burden of PKU, individuals can experience baseline anxiety unrelated to pegvaliase therapy. In addition, there are aspects of pegvaliase therapy that may be anxiety-inducing for those considering or receiving treatment.

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Background: Intratumor heterogeneity drives disease progression and treatment resistance, which can lead to poor patient outcomes. Here, we present a computational approach for quantification of cancer cell diversity in routine hematoxylin-eosin-stained histopathology images.

Methods: We analyzed publicly available digitized whole-slide hematoxylin-eosin images for 2000 patients.

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Parosteal lipomas and osteochondromas of the head and neck are uncommon benign tumors, constituting a small fraction of lipoma and bone tumor cases. We present a unique case of a 66-year-old male with a parosteal lipoma overlying an osteochondroma in the anterior midline neck, causing dysphagia. Surgical excision confirmed the diagnosis, and a literature review revealed similar cases predominantly adjacent to the mandible or calvaria.

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The NFE2L2 (NRF2) oncogene and transcription factor drives a gene expression program that promotes cancer progression, metabolic reprogramming, immune evasion, and chemoradiation resistance. Patient stratification by NRF2 activity may guide treatment decisions to improve outcome. Here, we developed a mass spectrometry-based targeted proteomics assay based on internal standard-triggered parallel reaction monitoring to quantify 69 NRF2 pathway components and targets, as well as 21 proteins of broad clinical significance in head and neck squamous cell carcinoma (HNSCC).

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Background: Equine pain scoring may be affected by the residual effect of anesthetic drugs.

Objectives: To compare pain scores in the hours immediately following anesthetic recovery to baseline pre-anesthetic scores in equine patients undergoing surgical and non-surgical procedures.

Study Design: Clinical observational study.

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Unlabelled: The immune system plays a crucial role in the regulation of metastasis. Tumor cells systemically change immune functions to facilitate metastatic progression. Through this study, we deciphered how tumoral galectin-1 (Gal1) expression shapes the systemic immune environment to promote metastasis in head and neck cancer (HNC).

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Unlabelled: Radiotherapy (RT) is one of the primary treatments of head and neck squamous cell carcinoma (HNSCC), which has a high-risk of locoregional failure (LRF). Presently, there is no reliable predictive biomarker of radioresistance in HNSCC. Here, we found that mutations in NFE2L2, which encodes Nrf2, are associated with a significantly higher rate of LRF in patients with oral cavity cancer treated with surgery and adjuvant (chemo)radiotherapy but not in those treated with surgery alone.

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Article Synopsis
  • Metagenomic next-generation sequencing (mNGS) of body fluids is a new method aimed at detecting hidden infections and potential cancerous tumors in patients who remain undiagnosed.
  • The study analyzed samples from two groups totaling 205 patients, comparing those diagnosed with malignancies and those with infections to assess the test's effectiveness in detecting cancer.
  • The findings revealed that the test had a high sensitivity of 87% for confirmed malignancies and 100% specificity, showcasing its potential to identify cancer using the same test used for infectious disease diagnosis.
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Background: High-grade transformation (HGT) is a rare process whereby conventional low- to intermediate-grade salivary gland carcinomas (SGC) transform into high-grade, poorly or undifferentiated malignancies with focal or complete loss of their conventional histomorphologic features. Because tumors with HGT are associated with a worse prognosis than their conventional counterparts, preoperative recognition of HGT may be of benefit for optimal patient management. Using a multi-institutional approach, we describe the largest fine needle aspiration (FNA) cohort of salivary gland carcinomas with HGT.

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Background: PERP (p53 apoptosis effector related to PMP22) localizes to desmosomes and suppresses squamous cell carcinoma development. Loss of PERP leads to worse local control in head and neck squamous cell carcinoma (HNSCC), likely by destabilizing desmosomes. We evaluated PERP loss at HNSCC surgical margins as a predictor of local relapse.

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Mammary analogue secretory carcinoma (MASC) is a relatively recently described salivary gland adenocarcinoma characterized by ETV6-NTRK3 gene fusion and in most cases indolent clinical behavior. The majority of tumors show an admixture of microcystic, solid, and tubular growth patterns but only a few cases with dominant macrocystic growth have been reported. We report 15 cases of macrocystic MASC.

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A 38-year-old woman presented with 2 months of dry cough, progressive shortness of breath, central chest pain, nausea, vomiting, and dizziness. She was previously healthy and was not taking any medications. She denied fever, night sweats, or weight loss.

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Purpose Of Review: This article reviews the latest treatment paradigms in sinonasal undifferentiated carcinoma (SNUC).

Recent Findings: The aggressive biology and associated advanced presentation of SNUC make successful treatment a challenge shared across medical specialties. Still, studies reporting outcomes in SNUC indicate that an aggressive treatment strategy consisting of surgery, radiation and chemotherapy offers the best chance of prolonged survival.

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Virus-associated carcinomas of the head and neck represent an unusual confluence of infections spread by viral transmission and cellular dysregulation resulting in carcinogenesis. While much remains to be elucidated about the exact progression from infection to cancer, a basic framework of viral biology can complement the pathologist's understanding of morphology. This context informs the pathologist's everyday practice, including selecting ancillary studies, communicating prognostically relevant findings, and participating in treatment planning.

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Background: The recently introduced Afirma gene expression classifier (AGEC) provides binary results (benign or suspicious) to guide management of cytologically indeterminate thyroid nodules. The AGEC is intended to reduce unnecessary surgeries for benign nodules, and management algorithms favor surgery for suspicious results. Limited data are available on the performance of this test for Hürthle cell nodules (HCNs).

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Objectives: The importance of detecting human papillomavirus (HPV) in head and neck squamous cell carcinoma (HNSCC) has resulted in a growing expectation for HPV testing of clinical samples. Although testing protocols vary, most pertain to primary tumor biopsies/resections. Testing of fine-needle aspirates and core biopsies (FNACBs) is advantageous, but it is unclear whether technical and biological factors adversely affect the fidelity of HPV detection in these samples.

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In this study, we successfully applied a previously modified version of the QuEChERS approach to quantify pesticide residues in samples of fresh salmon. Analysis was performed using a combination of liquid and gas chromatography-tandem mass spectrometry (LC-MS/MS and GC-MS/MS). The validated QuEChERS method used ethyl acetate for the extraction solvent and involved two freezing steps and a C18 dispersive solid phase extraction for removal of lipids.

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One's own face and gaze are never seen directly but only in a mirror. Yet, these stimuli capture attention more powerfully than others' face and gaze, suggesting the self is special for brain and behavior. Synchronous touches felt on one's own and seen on the face of others induce the sensation of including others in one's own face (enfacement).

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PAX8 is a useful immunohistochemical marker for the diagnosis of gynecologic tract malignancies. Several studies have described PAX8 expression in a wide variety of epithelial neoplasms, including ovarian and endometrial carcinomas. The goal of this study was to evaluate PAX8 expression in various types of uterine adenocarcinomas and mesonephric proliferations.

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PAX8 has emerged as a useful immunohistochemical marker for epithelial neoplasms of gynecologic origin. Expression of PAX8 in uterine malignant mesodermal mixed tumors (MMMT, carcinosarcoma) has not been characterized in detail. The goal of this study is to evaluate PAX8 expression in uterine MMMTs, with particular attention to its distribution in specific tumor components.

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