Publications by authors named "Gunn G"

Background: Definitive radiotherapy (dRT) has been shown to be an effective option for patients with oligometastatic and oligoprogressive cancers; however, this approach has not been well-studied in metastatic thyroid cancer.

Methods: This retrospective cohort included 119 patients with oligometastatic (34%) and oligoprogressive (66%) metastatic thyroid cancer treated from 2005 to 2024 with 207 dRT courses for 344 sites (50% thoracic, 37% bone, 7.5% brain, 4% abdominopelvic, and 1.

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  • This study investigates the progression patterns and outcomes of anaplastic thyroid cancer (ATC) patients with neck disease who received high-dose intensity-modulated radiation therapy (IMRT), focusing on those with unresected or partially resected tumors. !* -
  • The analysis included 40 patients treated from 2010 to 2020, revealing a median overall survival of 7.1 months and a median progression-free survival of 7.4 months for those with locoregional disease. !* -
  • The findings indicate that despite aggressive treatment, 53% of patients experienced loco-regional progression, predominantly in highly irradiated areas, emphasizing the need for improved targeting and strategy in treatment planning. !
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Importance: Anaplastic thyroid carcinoma (ATC) is a rare and lethal cancer. Although progress has been made in recent years in patients with mutated BRAF tumors, those who respond initially eventually die of their disease; furthermore, there are no approved therapies for non-BRAF mutated tumors.

Objective: To determine whether treatment with matched-targeted therapy plus immune checkpoint inhibitors were associated with improved overall survival (OS).

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  • BRAF/MEK inhibitors have significantly improved outcomes for patients with BRAF V600E-variant anaplastic thyroid carcinoma (BRAFv-ATC), which was previously considered untreatable.
  • Given that anaplastic thyroid carcinoma is a highly aggressive cancer linked to high mortality, quick diagnosis and treatment are crucial for better patient survival.
  • The FAST Consensus Statement stresses the need for early detection of the BRAF V600E variant and suggests streamlined treatment approaches to enhance patient care, addressing the recent advancements that still need to be reflected in clinical guidelines.
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To redevelop a neutralizing antibody (NAb) assay to be much more drug tolerant, have a large dynamic range and have high inhibition when using high levels of positive control (PC). Early assay data suggested that typical biotin labeling of the capture reagent (Drug 1, produced in a human cell line) was blocking it from binding with the PC or the detection target, and that the detection target was out competing the PC. Methodical biotin labeling experiments were performed at several challenge ratios and an Fc linker was added to the detection target.

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  • The study investigates radiation induced carotid artery disease (RICAD) in survivors of oropharyngeal cancer, focusing on changes in carotid artery volume after unilateral radiotherapy for early tonsillar cancer.
  • Researchers analyzed pre- and post-therapy CT scans from disease-free patients to assess the effects of differing radiation doses on carotid artery volumes, aiming to identify early imaging markers for RICAD.
  • Results from 46 patients revealed significant volume decrease in irradiated carotid arteries but no clear dose-response relationship, suggesting the need for further research on factors influencing carotid artery changes post-radiation therapy.
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The 17 Workshop on Recent Issues in Bioanalysis (17 WRIB) took place in Orlando, FL, USA on June 19-23, 2023. Over 1000 professionals representing pharma/biotech companies, CROs, and multiple regulatory agencies convened to actively discuss the most current topics of interest in bioanalysis. The 17 WRIB included 3 Main Workshops and 7 Specialized Workshops that together spanned 1 week to allow an exhaustive and thorough coverage of all major issues in bioanalysis of biomarkers, immunogenicity, gene therapy, cell therapy and vaccines.

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Introduction: The use of existing data to provide surveillance intelligence is widely advocated but often presents considerable challenges. Two data sources could be used as proxies for the mortality experienced by the Scottish cattle population: deaths recorded in the mandatory register [Cattle Tracing System (CTS)] and fallen stock collections by the National Fallen Stock Company (NSFCo) with a nationwide voluntary membership.

Methods: Data for the period 2011-2016 were described and compared to establish their strengths and limitations.

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Background: Acute pain is a common and debilitating symptom experienced by oral cavity and oropharyngeal cancer (OC/OPC) patients undergoing radiation therapy (RT). Uncontrolled pain can result in opioid overuse and increased risks of long-term opioid dependence. The specific aim of this exploratory analysis was the prediction of severe acute pain and opioid use in the acute on-treatment setting, to develop risk-stratification models for pragmatic clinical trials.

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The measurement of antidrug antibodies (ADA) in nonclinical studies provides limited value because the formation and incidence of nonclinical ADA does not translate to clinical experience. The formation and presence of ADA in nonclinical species can, however, correlate to reduced drug exposure and safety observations including vasculitis and immune complex disease. Generic ADA methods for humanized monoclonal antibody biotherapeutics mitigate the need to develop bespoke ADA methods during nonclinical drug development.

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  • Targeted policies for small-scale livestock keepers are limited due to a lack of information about smallholder farmers, who are key in managing disease outbreaks.
  • Social media serves as an important communication tool for these communities, prompting the need for improved monitoring methods that include them.
  • This study employs social network analysis to identify key influencers within the smallholder farming sector and highlights distinct networks that can enhance disease surveillance and control, emphasizing the need for further research on these communities.
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  • Recent outbreaks of Avian Influenza in Europe have prompted an investigation into the use of social media, particularly Twitter, for tracking disease outbreaks.
  • The study analyzed the relationship between avian influenza tweets and verified cases in the UK using various statistical methods, finding a weak correlation suggesting social media alone is inadequate for surveillance.
  • While social media can provide insights into public sentiment during outbreaks, it should be used alongside traditional surveillance methods for better accuracy, emphasizing the need for robust data analysis and surveillance systems.
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O26 is the commonest non-O157 Shiga toxin ()-producing serogroup reported in human infections worldwide. Ruminants, particularly cattle, are the primary reservoir source for human infection. In this study, we compared the whole genomes and virulence profiles of O26:H11 strains ( = 99) isolated from Scottish cattle with strains from human infections ( = 96) held by the Scottish O157/STEC Reference Laboratory, isolated between 2002 and 2020.

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Background: Sinonasal NUT carcinoma is an extremely rare, lethal malignancy with limited literature.

Methods: A case series was conduction of all patients with sinonasal NUT carcinoma at a single institution between 2010 and 2022. Survival and associated were evaluated.

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  • Over the past 20 years, the frequency of human infections caused by the E. coli strain O157 has been 2.5 times higher in Scotland compared to England and Wales.
  • A study combining cattle survey data and human clinical cases from 2014-2015 found that certain strains of O157 are more prevalent in Scottish cattle and humans, particularly the Stx2a+ strain PT21/28.
  • Whole genome sequencing revealed that most O157 diversity in human cases stemmed from cattle, with significant strain differences indicating localized transmission within Scotland.
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The 2022 16th Workshop on Recent Issues in Bioanalysis (WRIB) took place in Atlanta, GA, USA on September 26-30, 2022. Over 1000 professionals representing pharma/biotech companies, CROs, and multiple regulatory agencies convened to actively discuss the most current topics of interest in bioanalysis. The 16th WRIB included 3 Main Workshops and 7 Specialized Workshops that together spanned 1 week in order to allow exhaustive and thorough coverage of all major issues in bioanalysis, biomarkers, immunogenicity, gene therapy, cell therapy and vaccines.

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In the Surveillance Tool for Outcome-based Comparison of FREEdom from infection (STOC free) project (https://www.stocfree.eu), a data collection tool was constructed to facilitate standardised collection of input data, and a model was developed to allow a standardised and harmonised comparison of the outputs of different control programmes (CPs) for cattle diseases.

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Purpose: To report long-term outcomes of modern radiotherapy for sinonasal cancers.

Methods And Materials: A retrospective analysis of patients with sinonasal tumors treated with intensity-modulated radiotherapy or proton therapy. Multivariate analysis was used to determine predictive variables of progression free survival (PFS) and overall survival (OS).

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  • The term "bioanalytical" now covers a wider range of analytical outputs, including drug concentration data and evidence of drug interactions within the body, such as immunogenicity and pathway effects.
  • The Bioanalytical Hub model integrates various bioanalytical support services, focusing on multiple endpoints like pharmacokinetics and biomarkers while using diverse analytical methods.
  • This integrated approach maximizes the use of lab instruments, improves workforce flexibility, and enhances data analysis, reducing the need for multiple transitions as assays progress from exploratory stages to fully validated endpoints.
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Purpose: We developed and tested a novel method of creating intensity modulated proton arc therapy (IMPAT) plans that uses computing resources similar to those for regular intensity-modulated proton therapy (IMPT) plans and may offer a dosimetric benefit for patients with ependymoma or similar tumor geometries.

Methods: Our IMPAT planning method consists of a geometry-based energy selection step with major scanning spot contributions as inputs computed using ray-tracing and single-Gaussian approximation of lateral spot profiles. Based on the geometric relation of scanning spots and dose voxels, our energy selection module selects a minimum set of energy layers at each gantry angle such that each target voxel is covered by sufficient scanning spots as specified by the planner, with dose contributions above the specified threshold.

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Importance: Extranodal extension (pENE) is a critical prognostic factor in oropharyngeal cancer (OPC) that drives therapeutic disposition. Determination of pENE from radiological imaging has been associated with high inter-observer variability. However, the impact of clinician specialty on human observer performance of imaging-detected extranodal extension (iENE) remains poorly understood.

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The aim of this study was to describe the oncologic outcomes of patients with BRAF-mutated anaplastic thyroid cancer (ATC) who had neoadjuvant BRAF-directed therapy with subsequent surgery. For context, we also reviewed patients who received BRAF-directed therapy after surgery, and those who did not have surgery after BRAF-directed therapy. This was a single-center retrospective cohort study conducted at a tertiary care cancer center in Texas from 2017 to 2021.

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Background: Anaplastic thyroid cancer is a rare and aggressive cancer with no standard radiotherapy-based local treatment. Based on data suggesting synergy between pazopanib and paclitaxel in anaplastic thyroid cancer, NRG Oncology did a double-blind, placebo-controlled, randomised phase 2 clinical trial comparing concurrent paclitaxel and intensity-modulated radiotherapy (IMRT) with the addition of pazopanib or placebo with the aim of improving overall survival in this patient population.

Methods: Eligible patients were aged 18 years or older with a pathological diagnosis of anaplastic thyroid cancer, any TNM stage, Zubrod performance status of 0-2, no recent haemoptysis or bleeding, and no brain metastases.

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Degree of labeling and label efficiency are key factors for optimal characterization of critical reagents that are used in ligand binding assays. Here, three case studies are shown demonstrating how liquid chromatography-mass spectrometry (LC-MS) was utilized to characterize critical reagents using three unique methodologies. Critical reagent batches were prepared for LC-MS analysis by use of: 20 mM dithiothreitol (DTT) (Case 1), rapid PNGaseF (Case 2), and a mobile phase diluent (Case 3).

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