Publications by authors named "Earle Burgess"

Article Synopsis
  • Metastases, which are the spread of cancer cells to different organs, play a crucial role in the severity of renal cell carcinoma (RCC), with common sites being the lungs, bones, liver, and lymph nodes.
  • This study analyzed 657 tumor samples from both primary renal tumors and various metastatic sites to identify genomic and transcriptomic differences.
  • The findings reveal significant variations in tumor characteristics and the tumor microenvironment across different metastatic locations, highlighting the importance of these factors in creating targeted cancer treatments.
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Introduction: Men with advanced germ cell tumors (GCT) treated with chemotherapy are at high risk of venous thromboembolism (VTE). Predictors of VTE may identify patients who would benefit from prophylactic anticoagulation.

Patients And Methods: Men with advanced GCT (Stage IS, II, III) treated with chemotherapy were identified at 2 centers.

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Article Synopsis
  • - This study explored the gene expression differences between clear cell renal cell carcinoma (ccRCC) and non-clear cell variants (nccRCC) in a diverse patient group to improve treatment strategies.
  • - ccRCC tumors showed a stronger connection to angiogenesis, while different nccRCC subtypes had elevated scores in areas like cell cycle and fatty acid metabolism.
  • - Both tumor types displayed T effector scores linked to higher immune cell activity, suggesting potential benefits for immunotherapy, highlighting the need for tailored treatment plans based on tumor type.
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Purpose: Homologous recombination deficiency (HRD) is a well-described phenotype of some prostate cancers; however, current biomarkers for HRD are imperfect and rely on detection of single gene alterations in the homologous recombination repair (HRR) pathway, which may not capture the complexity of HRD biology. RNA signature-based methods of HRD identification present a potentially dynamic assessment of the HRD phenotype; however, its relationship with HRR gene alterations is not well characterized in prostate cancer.

Methods: A HRD assay on the basis of an RNA signature associated with biallelic loss was applied to a retrospective cohort study of 985 men with prostate cancer analyzed on the Tempus xT platform.

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Background: Erdafitinib is a pan-fibroblast growth factor receptor (FGFR) inhibitor approved for the treatment of locally advanced or metastatic urothelial carcinoma in adults with susceptible alterations who have progression after platinum-containing chemotherapy. The effects of erdafitinib in patients with -altered metastatic urothelial carcinoma who have progression during or after treatment with checkpoint inhibitors (anti-programmed cell death protein 1 [PD-1] or anti-programmed death ligand 1 [PD-L1] agents) are unclear.

Methods: We conducted a global phase 3 trial of erdafitinib as compared with chemotherapy in patients with metastatic urothelial carcinoma with susceptible alterations who had progression after one or two previous treatments that included an anti-PD-1 or anti-PD-L1.

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Purpose: Patients with locally advanced or metastatic urothelial cancer (la/mUC) who are ineligible for cisplatin-based therapy have limited first-line (1L) treatment options and significant need for improved therapies. Enfortumab vedotin (EV) and pembrolizumab (Pembro) individually have shown a survival benefit in urothelial cancer in second-line + la/mUC settings. Here, we present data from the pivotal trial of EV plus Pembro (EV + Pembro) in the 1L setting.

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Objectives: Novel regimens targeting immune checkpoints and the cMET or HER2 pathways are under investigation in metastatic urothelial carcinoma (mUC) though co-expression of these molecular targets has not been defined. We sought to characterize the protein co-expression rates of PD-L1, cMET and HER2 in primary and metastatic mUC lesions and agreement rates in paired biopsies.

Materials And Methods: We assessed PD-L1, cMET and HER2 protein expression by immunohistochemistry (IHC) in archival mUC samples identified from an institutional database (n = 143).

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Article Synopsis
  • - Erdafitinib is used to treat adults with advanced urothelial carcinoma who have not responded to prior platinum-based chemotherapy, aiming to understand the frequency and management of side effects from this treatment.
  • - In the BLC2001 clinical trial, 101 patients were treated with a specific dosage and monitoring for side effects like hyperphosphatemia, stomatitis, and skin issues, with most side effects being mild (grade 1 or 2) and manageable.
  • - Results showed that while some adverse events did occur, they were typically manageable, leading to few patients needing to stop treatment, but more research is necessary to see if these management strategies apply to a broader patient population.
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Purpose: Cancer patients are at high risk of developing severe illness from SARS-CoV-2 infection, but risk is lowered with receipt of COVID-19 vaccine. COVID-19 vaccination uptake among previously infected cancer patients may be influenced by an assumption of natural immunity, predicted weak immune response, or concerns about vaccine safety. The objective of this study was to evaluate COVID-19 vaccine uptake trends in cancer patients previously infected with SARS-CoV-2.

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Background: Galectin-1 (Gal-1) and Galectin-3 (Gal-3) are carbohydrate binding proteins with a wide range of biological activity, including regulation of cellular adhesion, proliferation, and apoptosis in solid tumors. Prior small studies have reported that Gal-3 expression is associated with progression of disease in urothelial carcinoma (UC), from non-muscle invasive UC progression to muscle invasive UC. We assessed Gal-1 and Gal-3 protein expression H-score utilizing a tissue microarray (TMA) created from 301 cystectomy specimens.

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Purpose: The TAPUR Study is a phase II basket trial that aims to evaluate activity of approved targeted agents in patients with advanced cancers with potentially actionable genomic variants. Data from a cohort of patients with metastatic castrate-resistant prostate cancer (mCRPC) and / mutations treated with olaparib are reported.

Methods: Eligible patients with measurable mCRPC were matched to treatment according to protocol-specified genomic matching rules.

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Background: Clinical outcomes of anti-programmed death‑(ligand) 1 (anti-PD-[L]1) therapy in patients with locally advanced or metastatic urothelial carcinoma (mUC) and fibroblast growth factor receptor alterations (+) remain unclear; recent studies have reported either comparable or poorer outcomes versus patients without alterations (-)

Objective: To analyze the outcomes of patients with mUC and any (mutations or fusions) who received anti-PD-(L)1 therapy.

Design Setting And Participants: In this noninterventional, retrospective, multicenter study, clinical practice data were collected from - patients who received prior immunotherapy between May 2018 and July 2019.

Outcome Measurements And Statistical Analysis: Investigator‑determined overall response rate (ORR), disease control rate (DCR), and overall survival (OS) were assessed in multivariate and unadjusted analyses.

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Purpose: Patients with metastatic urothelial carcinoma have poor prognosis after failure of standard first-line chemotherapy. Immune check point programmed death 1-programmed death ligand 1 antibodies have low response rates and thus there exists a major unmet need.

Materials And Methods: In this phase II trial, patients with metastatic urothelial carcinoma that recurred or progressed after platinum-based chemotherapy received soluble EphB4-human serum albumin (sEphB4-HSA) in combination with pembrolizumab.

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Objectives: Small cell bladder carcinoma (SCBC) represents a rare histologic variant with a poor prognosis and for which no routine biomarkers exist. Limited reports of genomic sequencing in SCBC have demonstrated a high prevalence of TP53 and RB1 gene mutations, though the prognostic value of these and other gene variants in SCBC remains undefined. In this study, we performed targeted genomic sequencing on a cohort of SCBC patients and correlated genomic findings with clinical outcomes to identify potential novel biomarkers.

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Biomarkers are needed in muscle-invasive bladder cancer (MIBC). We previously reported that high tumor aurora kinase (AURK) A expression identifies patients with MIBC with poor prognosis. Aberrant p53 expression has also been associated with poor outcomes in MIBC, though to the best of our knowledge, co-expression rates of p53 and aurora kinases have not been previously described in MIBC.

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Background: The outcomes of metastatic hormone-sensitive prostate cancer (mHSPC) have significantly improved through treatment intensification, yet Black representation in those studies is suboptimal.

Methods: A multi-institutional, retrospective analysis of Black men with mHSPC was conducted, focusing on baseline demographics, treatment patterns, genomic profiles, clinical outcomes including prostate-specific antigen response, time to castrate-resistant prostate cancer (CRPC), and subsequent treatments.

Results: A total of 107 patients, median age 64 years, 62% with de novo metastases at diagnosis and 64% with high-volume disease, were included.

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Background: Erdafitinib, a pan-fibroblast growth factor receptor (FGFR) tyrosine kinase inhibitor, was shown to be clinically active and tolerable in patients with advanced urothelial carcinoma and prespecified FGFR alterations in the primary analysis of the BLC2001 study at median 11 months of follow-up. We aimed to assess the long-term efficacy and safety of the selected regimen of erdafitinib determined in the initial part of the study.

Methods: The open-label, non-comparator, phase 2, BLC2001 study was done at 126 medical centres in 14 countries across Asia, Europe, and North America.

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Objective: To evaluate whether racial disparities in MRI-Bx usage persisted after correction for socioeconomic, demographic, and clinical factors.

Methods: This is a retrospective cohort study of patients who received either MRI-Bx or systematic biopsy (SB) within a single academic medical center between January 2018 - June 2020. For each patient, socioeconomic variables including household income, education, percent below poverty, and unemployment were estimated using 2015 American Community Survey census-tract level data.

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Introduction: 5-Alpha reductase inhibitor (5-ARI) use leads to a 50% decline in serum prostate specific antigen (PSA) without a concomitant decrease in prostate cancer (PCa) risk. We hypothesize that failure to account for the effect of 5-ARI use on serum PSA leads to increased PCa risk at urology referral among 5-ARI users.

Methods: This is a retrospective cohort study for the years 2018-2019.

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Background: Intravesical bacillus Calmette-Guérin (BCG) therapy is standard treatment for high-risk non-muscle invasive bladder cancer (NMIBC) but overall efficacy is low, and no reliable predictive biomarkers currently exist to refine patient selection. We performed genomic analysis on high-grade (HG) T1 NMIBCs to determine if response to therapy is predicted by certain mutational and/or expressional changes.

Methods: Patients with HG T1 NMIBC treated with induction BCG were stratified by response into durable and non-durable responders.

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Purpose: Contemporary trends and racial disparities in prostate cancer screening and referral to urology for prostate cancer risk are not well characterized, despite consensus that Black men are at higher risk for poor prostate cancer outcomes. The objective of this study was to characterize current racial disparities in prostate cancer screening and referral from primary care to urology for prostate cancer concern within our large, integrated health care system.

Materials And Methods: This retrospective cohort study used data from Atrium Health's enterprise data warehouse, which includes patient information from more than 900 care locations across North Carolina, South Carolina and Georgia.

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Background: The goal of this study is to evaluate germline genetic variants in African American men with metastatic prostate cancer as compared to those in Caucasian men with metastatic prostate cancer in an effort to understand the role of genetic factors in these populations.

Methods: African American and Caucasian men with metastatic prostate cancer who had germline testing using multigene panels were used to generate comparisons. Germline genetic results, clinical parameters, and family histories between the two populations were analyzed.

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Human epidermal growth factor receptor 2 (HER2) overexpression occurs in 5-10% of primary urothelial carcinomas (UCs) but has not reliably predicted benefit from HER2-targeted agents in the metastatic setting. HER2 testing of primary tumors may not reflect the HER2 status of distant metastases. We assessed the concordance of HER2 expression in paired primary and distant metastatic UC lesions.

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Substantial management changes in endocrine-related malignancies have been required as a response to the COVID-19 pandemic, including a draconian reduction in the screening of asymptomatic subjects, delay in planned surgery and radiotherapy for primary tumors deemed to be indolent, and dose reductions and/or delays in initiation of some systemic therapies. An added key factor has been a patient-initiated delay in the presentation because of the fear of viral infection. Patterns of clinical consultation have changed, including a greater level of virtual visits, physical spacing, masking, staffing changes to ensure a COVID-free population and significant changes in patterns of family involvement.

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Objectives: Overexpression of aurora kinase A (AURKA) confers a poor prognosis in patients with urothelial carcinoma of the bladder. The prognostic value of high aurora kinase B (AURKB) expression in local bladder cancer is not well defined, and whether the prognostic value of either AURKA or AURKB is affected by the use of chemotherapy is unknown. We sought to characterize the impact of high AURKA and AURKB expression on clinical outcome in patients with muscle-invasive bladder cancer (MIBC) who received neoadjuvant chemotherapy (NAC).

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