Publications by authors named "Kirsten Burdett"

Objective: To characterize neighborhood-level area deprivation's association with oropharyngeal carcinoma clinicodemographics, tumor staging, recurrence, and overall survival.

Study Design: Retrospective study.

Setting: Single institution academic medical center.

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  • The study explored the combination of paclitaxel and carboplatin for treating recurrent glioblastoma, showing that low-intensity pulsed ultrasound and microbubbles can enhance drug delivery to the brain.
  • In preclinical models, the combination was found to be effective, resulting in a higher susceptibility of glioma cell lines and demonstrating synergy in 55% of cases.
  • The findings suggest that the combination therapy could lead to better outcomes than individual treatments, and this approach is being further investigated in a phase II clinical trial.
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Purpose: Evidence suggests that MAPK pathway activation, as measured by ERK1/2 phosphorylation (p-ERK), predicts overall survival (OS) in patients with recurrent glioblastoma receiving anti-PD-1 therapy. We aimed to validate these findings in independent cohorts.

Experimental Design: In a 24-patient clinical trial on recurrent glioblastoma and high-grade gliomas, we examined the link between p-ERK levels and OS.

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  • Invasive cervical cancer (ICC) is preventable and can be detected early through screening, but women living with HIV often present at advanced stages, leading to higher mortality rates.
  • A cohort study in Nigeria enrolled 239 women with confirmed ICC, assessing their HIV status, stages of cancer, and overall survival through various analytical methods.
  • Results showed that HIV-positive patients were generally younger, had more advanced stages of ICC at diagnosis, and experienced lower overall survival rates compared to HIV-negative patients.
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Background And Objectives: Compared with White patients, Black and American Indian/Alaskan Native (AI/AN) patients experience higher rates of kidney cancer incidence, and Black, AI/AN, and Hispanic patients face later stages of disease at diagnosis, poorer survival rates, and greater risk of mortality. Despite the importance that appropriate treatment has in ensuring positive outcomes, little is known about the association between race and ethnicity and receipt of treatment for kidney cancer. Accordingly, the aim of this study was to explore differences in receipt of treatment and patterns of refusal of recommended treatment by race and ethnicity.

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Introduction: Palbociclib is highly efficacious and well tolerated in hormone-receptor positive (HR+) metastatic breast cancer (BC) but its activity for HER2+ BC with brain metastases (BM) is unknown.

Methods: In a single-arm phase II study we evaluated palbociclib with trastuzumab for patients with HER2+ MBC and BM. The primary endpoint was BM response rate.

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  • Gliomas, particularly glioblastomas, are aggressive brain tumors that often return after treatment and lead to fatal outcomes, highlighting the need for better understanding of therapy resistance.* -
  • This study developed therapy-resistant models of glioblastoma by implanting initial therapy-naïve tumors into mice and exposing them to common treatments like radiotherapy and temozolomide, resulting in mutations and hypermutation.* -
  • The therapy-resistant tumors showed decreased survival with temozolomide but remained sensitive to a different drug, lomustine, suggesting these models can help researchers better understand and treat recurrent gliomas.*
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Venous thromboembolism (VTE) is a life-threating condition that is common in patients with adult-type diffuse gliomas, yet thromboprophylaxis is controversial because of possible intracerebral hemorrhage. Effective VTE prediction models exist for other cancers, but not glioma. Our objective was to develop a VTE prediction tool to improve glioma patient care, incorporating clinical, blood-based, histologic, and molecular markers.

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  • Single-domain antibody fragments, known as VH, have potential for treating brain tumors, but getting them through the tumor-brain barrier is tough.
  • This study looked at using low-dose whole-brain irradiation to help deliver an anti-HER2 VH to breast cancer tumors in mice, showing that radiation increased the uptake of this therapeutic antibody in the tumors.
  • Results indicated that after 10-Gy cranial irradiation, there was enhanced tumor perfusion and permeability, leading to greater delivery of the anti-HER2 VH, suggesting this method could improve detection and treatment of brain metastases.
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Background: Handoffs and documentation are a potentially modifiable source of medical error. However, little attention has been given toenhancementof these within the neurosurgical field. We aim to increase efficiency and accuracy of neurosurgical handoffs, including the neurological exam, thus decreasing medical documentation time within current duty-hour restrictions.

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Improved understanding of local breast biology that favors the development of estrogen receptor negative (ER-) breast cancer (BC) would foster better prevention strategies. We have previously shown that overexpression of specific lipid metabolism genes is associated with the development of ER- BC. We now report results of exposure of MCF-10A and MCF-12A cells, and mammary organoids to representative medium- and long-chain polyunsaturated fatty acids.

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Only a subset of recurrent glioblastoma (rGBM) responds to anti-PD-1 immunotherapy. Previously, we reported enrichment of BRAF/PTPN11 mutations in 30% of rGBM that responded to PD-1 blockade. Given that BRAF and PTPN11 promote MAPK/ERK signaling, we investigated whether activation of this pathway is associated with response to PD-1 inhibitors in rGBM, including patients that do not harbor BRAF/PTPN11 mutations.

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Background: Malignant glioma is the most common and lethal primary brain tumour, with dismal survival rates and no effective treatment. We examined the safety and activity of NSC-CRAd-S-pk7, an engineered oncolytic adenovirus delivered by neural stem cells (NSCs), in patients with newly diagnosed high-grade glioma.

Methods: This was a first-in-human, open-label, phase 1, dose-escalation trial done to determine the maximal tolerated dose of NSC-CRAd-S-pk7, following a 3 + 3 design.

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Topoisomerase II poisons are one of the most common class of chemotherapeutics used in cancer. We and others had shown that a subset of glioblastomas, the most malignant of all primary brain tumors in adults, is responsive to TOP2 poisons. To identify genes that confer susceptibility to this drug in gliomas, we performed a genome-scale CRISPR knockout screen with etoposide.

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Design and characterization of a radiation biodosimetry device are complicated by the fact that the requisite data are not available in the intended use population, namely humans exposed to a single, whole-body radiation dose. Instead, one must turn to model systems. We discuss our studies utilizing healthy, unexposed humans, human bone marrow transplant patients undergoing total body irradiation (TBI), non-human primates subjected to the same irradiation regimen received by the human TBI patients and NHPs given a single, whole-body dose of ionizing radiation.

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