Publications by authors named "Buchler Tomas"

Lenvatinib plus pembrolizumab significantly improved efficacy versus sunitinib in treatment of advanced renal cell carcinoma (aRCC) in the phase 3 CLEAR study. We report results of an exploratory post hoc analysis of tumor response data based on baseline metastatic characteristics of patients who received lenvatinib plus pembrolizumab versus sunitinib, at the final overall survival analysis time point of CLEAR (cutoff: July 31, 2022). Treatment-naïve adults with aRCC were randomized to: lenvatinib (20 mg PO QD in 21-day cycles) plus pembrolizumab (n = 355; 200 mg IV Q3W); lenvatinib plus everolimus (not reported here); or sunitinib (n = 357; 50 mg PO QD; 4 weeks on/2 weeks off).

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  • Prostate cancer (PCa) has an immunosuppressive environment that limits immune activation, resulting in reduced activity of cytotoxic T-cells and increased levels of regulatory T cells (Tregs) and tumor-associated macrophages (TAMs), which are linked to poorer outcomes.
  • The review emphasizes the role of different immune cells, including beneficial Th1 and harmful Th17 cells, in influencing tumor behavior, and how PCa's low immunogenicity poses challenges for immunotherapy.
  • Chemotherapy is shown to have the potential to enhance the immune response against tumors by transforming the "cold" tumor microenvironment into a "hot" one, improving treatment efficacy by targeting immunosuppressive cells.
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  • - Enfortumab vedotin (EV) is effective for patients with advanced urothelial carcinoma who have previously received platinum chemotherapy and immune therapy, despite lacking research on those treated with avelumab maintenance.
  • - A study of 182 patients showed a median overall survival of 12.7 months and a progression-free survival of 7.9 months, with 39% achieving a positive response to EV after avelumab treatment.
  • - The study confirms EV's effectiveness, suggesting it can be a viable option for patients previously treated with avelumab, with manageable side effects like grade ≥ 3 neuropathy and skin rash occurring in a minority of cases.
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  • Advances in immuno-oncology have improved treatment for renal cell carcinoma, but patients with "primary refractory" disease have poor outcomes; our study found a 19% prevalence of this group among 1,709 metastatic clear cell patients across 72 centers in 22 countries.
  • The highest primary refractory rate was 27% with nivolumab/ipilimumab, while pembrolizumab/lenvatinib had the lowest at 10%; those classified as primary refractory only had a median survival of 7.6 months compared to 55.7 months for non-primary refractory patients.
  • Significant predictors of survival for primary refractory patients included factors like prior nephrectomy and presence of bone/brain metastases, highlighting the complex
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Background: Neoadjuvant chemotherapy followed by radical cystectomy is the standard treatment for cisplatin-eligible patients with muscle-invasive bladder cancer. Adding perioperative immunotherapy may improve outcomes.

Methods: In this phase 3, open-label, randomized trial, we assigned, in a 1:1 ratio, cisplatin-eligible patients with muscle-invasive bladder cancer to receive neoadjuvant durvalumab plus gemcitabine-cisplatin every 3 weeks for four cycles, followed by radical cystectomy and adjuvant durvalumab every 4 weeks for eight cycles (durvalumab group), or to receive neoadjuvant gemcitabine-cisplatin followed by radical cystectomy alone (comparison group).

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Diagnostic performance of molecular markers in surrogate tissues like stool may be affected by colorectal cancer (CRC) morphological heterogeneity. The mucinous histotype represents a subgroup of CRC with a peculiar molecular program and unfavorable disease progression. However, the percentage of mucinous morphology necessary to define this subtype is still a matter of debate.

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  • There is ongoing debate about whether sex influences the effectiveness of immune checkpoint inhibitors in cancer treatment, specifically for metastatic renal cell carcinoma (mRCC).
  • A study involving 1,827 mRCC patients from multiple countries found that overall median overall survival (OS) was similar for both sexes, but males performed better in specific subgroups, particularly younger patients and those with certain cancer histologies.
  • Interestingly, female sex was identified as a negative prognostic factor in patients with sarcomatoid differentiation, suggesting that despite women having stronger immune responses, their outcomes in these cases were worse than those of men.
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Background: About 20% of patients with renal cell carcinoma present with non-clear cell histology (nccRCC), encompassing various histological types. While surgery remains pivotal for localized-stage nccRCC, the role of cytoreductive nephrectomy (CN) in metastatic nccRCC is contentious. Limited data exist on the role of CN in metastatic nccRCC under current standard of care.

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  • ModraDoc006 is an oral version of docetaxel aimed at treating metastatic castration-resistant prostate cancer (mCRPC) when combined with ritonavir, and its efficacy and safety were tested against standard intravenous docetaxel in a phase II trial.
  • The study involved 103 chemotherapy-naïve mCRPC patients who were randomly assigned to receive either intravascular docetaxel or the oral ModraDoc006/r for comparison, measuring the primary outcome of radiographic progression-free survival (rPFS).
  • The results showed no significant difference in rPFS between the two treatments, but ModraDoc006/r had a better safety profile with fewer and milder side effects, suggesting it may be
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  • The study investigates the role of CD47, a molecule that helps tumor cells evade the immune system, in various soft tissue sarcomas (STS) and its potential as a marker for prognosis.
  • Researchers analyzed tumor samples from 55 patients to assess CD47 levels and how they relate to tumor grades and patient survival outcomes.
  • Findings showed that CD47 is widely expressed in high-grade undifferentiated pleomorphic sarcomas and other STS subtypes, suggesting it may play a critical role in tumor survival, particularly in higher-grade tumors.
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Aims: The objective of this study was to investigate the association and combined prognostic significance of the PD-L1, Smoothened protein and β-catenin expressions in patients with clear cell renal cell carcinoma (ccRCC).

Methods: The PD-L1, Smoothened protein and β-catenin expression were evaluated in 104 ccRCC patients. All studied tumor samples were acquired from nephrectomy specimens of primary tumors and not from biopsies or metastases.

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Renal cell carcinoma (RCC) is a common malignancy frequently diagnosed at the metastatic stage. We performed a comprehensive analysis of the tumor immune microenvironment (TIME) in RCC patients, including the peritumoral tissue microenvironment, to characterize the phenotypic patterns and functional characteristics of infiltrating immune cells. T cells from various compartments (peripheral blood, tumor, peritumoral area, and adjacent healthy renal tissue) were assessed using flow cytometry and Luminex analyses, both before and after T cell-specific stimulation, to evaluate activation status and migratory potential.

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Several regimens combining immunotherapy and tyrosine kinase inhibitors (TKIs) have recently been validated for the first-line treatment of patients with metastatic renal cell carcinoma (mRCC). While immunotherapy is typically discontinued after 2 years in patients who neither progress nor experience limiting toxicity, according to the protocols of most recent phase III clinical trials, TKIs are to be continued until disease progression or the emergence of limiting toxicity. However, the prolonged use of TKIs is associated with significant toxicity and financial costs.

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The aim of this study was to investigate the prognostic significance of membranous β-catenin and cytoplasmic β-catenin expression in pancreatic cancer patients (pts). One hundred pts with histologically verified exocrine pancreatic ductal adenocarcinoma were retrospectively studied. The membranous β-catenin, cytoplasmic β-catenin, and cell nucleus β-catenin expression were immunohistochemically evaluated.

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Background: Systemic treatment with immune combinations is the gold standard for metastatic renal cell carcinoma (mRCC) worldwide. The systemic immune-inflammation index (SII) is a prognostic marker for several types of malignant neoplasms, including mRCC, in the era of tyrosine kinase inhibitor (TKI) treatment. Data regarding the prognostic value of the SII in patients with mRCC treated with immunotherapy are scarce and controversial.

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  • Testicular cancer is the most common cancer in young men, with increasing rates and a high survival rate of 95%.
  • Many patients show semen abnormalities before treatment, but the reasons behind these issues are not fully understood.
  • This review will explore how mitochondrial dysfunction affects sperm quality by altering energy production pathways and increasing oxidative stress in testicular cancer patients.
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Background: Treatment options for metastatic renal cell carcinoma (mRCC) are rapidly expanding, and immunotherapy using checkpoint inhibitors is a first- or second-line option for most patients.

Objective: The objective of the present retrospective analysis was to explore the real-world impact of checkpoint inhibitor-based immunotherapy compared with therapy using other types of targeted therapies using a large real-world database.

Methods: RenIS, a registry of patients with mRCC was used as a data source.

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Introduction: The phase 3 CLEAR study demonstrated that lenvatinib plus pembrolizumab significantly improved efficacy versus sunitinib as first-line treatment for patients with advanced renal cell carcinoma (RCC). Prognostic features including presence and/or site of baseline metastases, prior nephrectomy, and sarcomatoid features have been associated with disease and treatment success. This subsequent analysis explores outcomes in patients with or without specific prognostic features.

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Background: The upfront treatment of metastatic renal cell carcinoma (mRCC) has been revolutionized by the introduction of immune-based combinations. The role of cytoreductive nephrectomy (CN) in these patients is still debated. The ARON-1 study (NCT05287464) was designed to globally analyze real-world data of mRCC patients receiving first-line immuno-oncology combinations.

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Background: Renal c carcinoma (RCC) is one of the most common urinary cancers worldwide, with a predicted increase in incidence in the coming years. Immunotherapy, as a single agent, in doublets, or in combination with anti-vascular endothelial growth factor receptor tyrosine kinase inhibitors (TKIs), has rapidly become a cornerstone of the RCC therapeutic scenario, but no head-to-head comparisons have been made. In this setting, real-world evidence emerges as a cornerstone to guide clinical decisions.

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Background: Immuno-oncology combinations have achieved survival benefits in patients with metastatic renal cell carcinoma (mRCC).

Objective: The ARON-1 study (NCT05287464) was designed to globally collect real-world data on the use of immuno-combinations as first-line therapy for mRCC patients.

Patients And Methods: Patients aged ≥ 18 years with a cytologically and/or histologically confirmed diagnosis of mRCC treated with first-line immuno-combination therapies were retrospectively included from 47 International Institutions from 16 countries.

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  • - The CLEAR trial demonstrated that lenvatinib plus pembrolizumab was more effective than sunitinib in treating advanced renal cell carcinoma, particularly in the East Asian patient subset, which showed a median progression-free survival of 22.1 months versus 11.1 months with sunitinib.
  • - In the East Asian group (213 patients), the objective response rate was also higher for the lenvatinib plus pembrolizumab combo at 65.3% compared to 49.2% for sunitinib.
  • - Treatment-related side effects were common, with hand-foot syndrome appearing in 66.7% of those on lenvatinib plus pembrolizumab, indicating
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Background: Obesity has been associated with improved response to immunotherapy in cancer patients. We investigated the role of body mass index (BMI) in patients from the ARON-1 study (NCT05287464) treated by dual immuno-oncology agents (IO+IO) or a combination of immuno-oncology drug and a tyrosine kinase inhibitors (TKI) as first-line therapy for metastatic renal cell carcinoma (mRCC).

Patients And Methods: Medical records of patients with documented mRCC treated by immuno-oncology combinations were reviewed at 47 institutions from 16 countries.

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