Publications by authors named "Michael LaPelusa"

Introduction: Galectin-3 plays critical roles in the adhesion, proliferation, and differentiation of tumor cells. Recent data have suggested that galectin-3 plays a role in the development of hepatocellular carcinoma (HCC); however, its prognostic value has not been validated. The aim of our study was to evaluate the clinical and prognostic value of galectin-3 in patients with HCC.

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  • This study focused on the effectiveness of perioperative immunotherapy in early-stage hepatocellular carcinoma (HCC) patients, specifically looking at tissue and imaging biomarkers during a phase II clinical trial.
  • Nineteen patients receiving either neoadjuvant nivolumab combined with ipilimumab or nivolumab alone showed that major pathologic response (MPR) was linked to larger tumors initially, but a significant reduction in size post-treatment and increased immune activity markers like CD8 and granzyme B.
  • The findings suggest that changes in tumor size and immune cell dynamics could serve as potential predictors for how well patients respond to neoadjuvant immunotherapy in treating resectable HCC.*
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  • Circulating tumor DNA (ctDNA) can help doctors detect and treat liver cancer called hepatocellular carcinoma (HCC) without having to do surgery or other invasive tests.!
  • A study looked at ctDNA from 44 HCC patients to see if it could predict how long they would live and how well they would respond to a treatment called nivolumab.!
  • The results showed that certain mutations in ctDNA were linked to shorter or longer survival times, suggesting ctDNA testing could help doctors make better treatment decisions for HCC patients in the future.!
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Background: Immune checkpoint inhibitors (ICIs), agents that stimulate T-cell function, have become the standard first-line treatment for unresectable hepatocellular carcinoma (HCC). However, they may also cause immune-related adverse events (irAEs), which are rare and have not been extensively reported. Here, we describe a case of severe febrile neutropenia and pancytopenia after atezolizumab plus bevacizumab (atezo/bev) therapy and its treatment course.

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Introduction: In this study, we explored the potential of plasma growth hormone (GH) as a prognostic biomarker in patients with advanced HCC treated with durvalumab plus tremelimumab (D+T).

Methods: In this study, we included 16 patients with advanced HCC who received D+T at MD Anderson Cancer Center between 2022 and 2023 and had plasma GH measurements recorded before treatment. Plasma GH levels were measured from prospectively collected blood samples and were correlated with progression-free survival (PFS) and overall survival (OS).

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  • A study examined the consistency of genetic mutations in tumor tissue before treatment and circulating tumor DNA (ctDNA) after treatment in patients with metastatic squamous cell carcinoma of the anal canal (SCCA).
  • They found that 34.5% of mutations in posttreatment ctDNA matched those from pretreatment tumor tissue, while 47.6% of pretreatment mutations were also found in posttreatment ctDNA.
  • The results indicate significant changes in mutations post-treatment, suggesting ctDNA is a valuable tool for tracking tumor evolution and identifying new actionable mutations, warranting further research with larger patient groups.
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Background: The US-Mexico border is the busiest in the world, with millions of people crossing it daily. However, little is known about cross-border utilization of cancer care, or about the reasons driving it. We designed a cross sectional online survey to understand the type of care patients with cancer who live in the US and Mexico seek outside their home country, the reasons why patients traveled across the border to receive care, and the barriers faced when seeking cross-border care.

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The microbiome is pivotal in maintaining health and influencing disease by modulating essential inflammatory and immune responses. Hepatocellular carcinoma (HCC), ranking as the third most common cause of cancer-related fatalities globally, is influenced by the gut microbiome through bidirectional interactions between the gut and liver, as evidenced in both mouse models and human studies. Consequently, biomarkers based on gut microbiota represent promising non-invasive tools for the early detection of HCC.

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This letter to the editor remarks on results of a recently published study and highlights the need for multinational and interinstitutional registries so health departments in the US and Latin American countries can accurately capture cancer incidence and mortality data.

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The burden of hepatocellular carcinoma (HCC) continues to pose a significant global health problem. Several systemic therapies have recently been shown to improve survival for patients with unresectable disease. However, evidence to support the use of neoadjuvant or adjuvant systemic therapies in patients with resectable disease is limited, despite the high risk of recurrence.

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Colorectal cancer results in the deaths of hundreds of thousands of patients worldwide each year, with incidence expected to rise over the next two decades. In the metastatic setting, cytotoxic therapy options remain limited, which is reflected in the meager improvement of patient survival rates. Therefore, focus has turned to the identification of the mutational composition inherent to colorectal cancers and development of therapeutic targeted agents.

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Background And Objective: Biliary tract cancers (BTCs), including cholangiocarcinoma and gallbladder cancer, are a relatively rare group of cancers with a poor prognosis. Over the past decade, the utilization of next-generation sequencing has led to the identification of multiple actionable somatic aberrations in BTCs. Subsequently, new therapies have been created to target these molecular alterations and have been incorporated into clinical practice.

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Background: Early-onset gastric cancer (EOGC), or gastric cancer in patients younger than 45 years old, is poorly understood and relatively uncommon. Similar to other gastrointestinal malignancies, the incidence of EOGC is rising in Western countries. It is unclear which populations experience a disproportionate burden of EOGC and what factors influence how patients with EOGC are treated.

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Purpose: Residents living in Texas counties along the United States-Mexico border make up a unique demographic. These counties consist of a large proportion of Hispanic-Latinx people who experience a high rate of health uninsurance and underinsurance, low household income averages, and, as a whole, exhibiting relatively poor health outcomes compared to the US general population. Limited information exists regarding the effects of these characteristics on the incidence of colorectal cancer (CRC).

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Background: Early-onset pancreatic cancer (EOPC) is relatively uncommon. It is unclear if the incidence of EOPC is evolving and how these patients are treated.

Methods: We conducted a retrospective, population-based study using SEER 2004-2016.

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Background: The incidence of colorectal cancer in adults younger than age 50 has increased with rates expected to continue to increase over the next decade. The objective of this study is to examine the survival benefit of surgical resection (primary and/or metastatic) versus palliative therapy in this patient population.

Methods: We identified 6708 young adults aged 18-45 years diagnosed with metastatic colorectal cancer (mCRC) from 2004 to 2015 from the SEER database.

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The inaugural "Microbiome for Mars" virtual workshop took place on July 13, 2020. This event assembled leaders in microbiome research and development to discuss their work and how it may relate to long-duration human space travel. The conference focused on surveying current microbiome research, future endeavors, and how this growing field could broadly impact human health and space exploration.

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