Publications by authors named "Luke D Rothermel"

Purpose: To verify the stability and reliability of circulating microRNA (miRNA) profiles in plasma and serum under different processing and storage conditions to inform future applications to circulating biomarker analyses.

Background: The development of blood-based methods for early disease detection has become increasingly desirable across various medical fields. RNA profiles have been investigated but have been a challenge due to rapid degradation of the analyte by ubiquitous RNases.

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Checkpoint inhibitor therapy revolutionized the treatment of patients with melanoma. However, in patients where melanoma exhibits resistance to checkpoint inhibitor therapy, the treatment options are limited. Oncolytic viruses are a unique form of immunotherapy that uses live viruses to infect and lyse tumor cells to release the elusive neoantigen picked up by the antigen-presenting cells, thus increasing the chances of an immune response against cancer.

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Background And Objectives: Melanoma is one of the fastest-growing cancers in the United States, with nearly 100% 5-year survival for early-stage disease compared to 35% for late-stage disease. Regional studies suggest that areas with increased early-stage melanoma diagnoses may not experience a reduction in late-stage cases, raising questions about the effectiveness of early detection. We hypothesize that higher socioeconomic status (SES) will correlate with increased early-stage melanoma without a decrease in late-stage disease, with geographic variation across US regions.

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Background: Eccrine porocarcinoma is a rare cutaneous adnexal malignancy. Factors associated with metastasis of porocarcinoma and evidence for the utility of sentinel lymph node biopsy are incomplete within the literature.

Objective: Determine prognostic factors that may guide the decision to pursue sentinel lymph node biopsy in patients with porocarcinoma.

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Simple Summary: The development of contemporary immune and targeted therapies for patients with metastatic extended survival compared to the previous standard of care treatments. Therefore, equitable access to these therapies for all patients with advanced melanoma is of high importance. We aimed to understand the association between SES with treatment receipt and prognosis.

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Background: Merkel cell carcinoma (MCC) is a rare, aggressive skin cancer with poor outcomes. Many questions remain regarding its epidemiology.

Objective: To characterize the epidemiology of MCC.

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Background: Multiple sclerosis (MS) patients are excluded from studies of immune checkpoint inhibitors (ICIs) due to concern for MS flare. This study aims to report the incidence of MS relapse, immune-related adverse events (irAEs), and cancer outcomes in MS patients with solid-organ malignancy treated with ICIs.

Methods: In this retrospective study, MS patients who received ICIs at University Hospitals Seidman Cancer Center were identified electronically.

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Article Synopsis
  • Socioeconomic factors, like income and education, play a significant role in the health outcomes of patients with early-stage melanoma.
  • These factors can affect not just survival rates but also access to treatment and support resources.
  • Therefore, it's crucial to integrate socioeconomic considerations into the tools used for predicting patient prognosis.
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Introduction: Upper gastrointestinal (UGI) cancers require multidisciplinary treatment, but surgery provides the only potentially curative option. We sought to understand reasons for attrition before surgery within our regional hospital network.

Methods: We performed chart reviews of patients (age 18-80) with stage I-III UGI cancers (gastroesophageal junction, gastric, and hepatopancreatobiliary adenocarcinomas) in our multihospital cancer registry from 2015 to 2021.

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Cytoreductive surgery (CRS) with heated intraoperative intraperitoneal chemotherapy (HIPEC) has been shown to improve survival for patients with malignant peritoneal mesothelioma (MPM). Presently, there is no standardized HIPEC protocol with respect to chemotherapeutic agent, dose, administration temperature, or duration and limited literature comparing outcomes in different regimens. In this study, we analyze common practices and outcomes of published HIPEC regimens to gain insight into current practice to inform future directions of study.

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Background: The National Comprehensive Cancer Network considers "baseline staging" (whole body computed tomography or positron emission tomography scans with or without brain magnetic resonance imaging scans) for all patients with asymptomatic melanoma who had a positive sentinel lymph node biopsy result. The true yield of these workups is unknown.

Methods: We created cohorts of adult patients with malignant melanoma using the National Cancer Database (2012-2020) to mimic 3 common scenarios: 1) clinically node-negative disease, with positive sentinel lymph node biopsy results; 2) clinically node-negative disease, with negative sentinel lymph node biopsy results; and 3) clinically node-positive disease, with confirmed lymph node metastases.

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Pancreatic cancer is the third leading cause of cancer death in the United States, and while conventional chemotherapy remains the standard treatment, responses are poor. Safe and alternative therapeutic strategies are urgently needed . A ketogenic diet has been shown to have anti-tumor effects across diverse cancer types but will unlikely have a significant effect alone.

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Background: Sentinel lymph node biopsy (SLNB) is performed less often for older patients with melanoma. We investigated the association of SLNB and melanoma-specific survival (MSS) in the elderly.

Methods: We retrospectively reviewed the Surveillance, Epidemiology, and End Results (SEER: 2010-2019) for patients ≥ 70 years with cT2-4N0M0 melanoma.

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Melanoma metabolism can be reprogrammed by activating BRAF mutations. These mutations are present in up to 50% of cutaneous melanomas, with the most common being V600E. BRAF mutations augment glycolysis to promote macromolecular synthesis and proliferation.

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Article Synopsis
  • Melanoma survival rates have improved with immunotherapy, but access disparities exist due to factors like insurance status and socioeconomic background.* -
  • A study using the National Cancer Database showed that adjuvant immunotherapy significantly increases survival rates for stage III melanoma, yet older patients and those from lower socioeconomic backgrounds are less likely to receive it.* -
  • The findings highlight inconsistencies in the use of immunotherapy across different treatment centers, suggesting a need for more equitable access to improve patient outcomes.*
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Article Synopsis
  • Pancreatic ductal adenocarcinoma (PDAC) has a low 5-year survival rate of 13%, and most patients develop resistance to chemotherapy.
  • Researchers discovered that overexpression of isocitrate dehydrogenase 1 (IDH1) in PDAC cells helps them survive chemotherapy by aiding mitochondrial function and managing oxidative stress.
  • Inhibiting IDH1 with the drug ivosidenib alongside standard chemotherapy not only boosts treatment effectiveness in lab studies but is also being tested in clinical trials for potential application in patient care.
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The frequency of major cancer surgery in the elderly (≥80 years) has increased concomitantly with the rise in average age of the population. We assessed early postoperative mortality following hepato-pancreato-biliary (HPB) and gastrointestinal (GI) procedures for common malignancies stratified by age. The National Cancer Database (2004-2017) was queried for patients who underwent resection for GI (gastroesophageal and colorectal) or HPB (pancreatic adenocarcinoma, biliary tract, and primary liver) cancers.

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Objectives: Immune checkpoint inhibitors are a promising new therapy for advanced Merkel Cell Carcinoma (MCC). We investigated real-world utilization and survival outcomes of first-line immunotherapies in a contemporary cohort.

Methods: Using the National Cancer Database (NCDB), we identified 759 patients with MCC between 2015 and 2020 with stage IV disease and known status of first-line systemic therapy.

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Importance: Despite the clear potential benefits of neoadjuvant therapy, the optimal neoadjuvant regimen for patients with high-risk resectable melanoma (HRRM) is not known.

Objective: To compare the safety and efficacy of dual checkpoint inhibitors with anti-programmed cell death protein-1 (anti-PD1) therapy in a neoadjuvant setting among patients with HRRM.

Design, Setting, And Participants: In this pooled analysis of clinical trials, studies were selected provided they investigated immune checkpoint inhibitor treatment, were published between January 2018 and March 2023, and were phase 1, 2, or 3 clinical trials.

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Background: In 2011, immunotherapy and targeted therapy revolutionized melanoma treatment. However, inequities in their use may limit the benefits seen by certain patients.

Methods: We performed a retrospective review of patients in the National Cancer Database for patients with stage IV melanoma from 2 time periods: 2004-2010 and 2016-2020, distinguishing between those who received systemic therapy and those who did not.

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