Publications by authors named "Yohann Loriot"

Introduction: KEYNOTE-361 evaluated first-line pembrolizumab with and without platinum-based chemotherapy versus chemotherapy alone in advanced or metastatic urothelial carcinoma. The primary end points of progression-free survival (PFS) or overall survival (OS) were not met. Exploratory analysis of efficacy by platinum agent (cisplatin or carboplatin) is reported.

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Article Synopsis
  • Advances in molecular diagnostics are transforming how prostate, renal, and urothelial cancers are assessed, offering more accurate detection methods for disease burden and minimal residual disease (MRD).
  • A literature review from 1980-2024 highlights emerging radiographic and molecular tools aimed at improving disease quantification and monitoring through innovative technologies and biomarker-informed trials.
  • New developments, like novel radiotracers and molecular detection methods (e.g., circulating tumor DNA), provide insights into disease mechanisms and have the potential to enhance clinical management, although full MRD application is still in progress.
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Background Tumor fraction (TF) at liquid biopsy is a potential noninvasive marker for tumor burden, but validation is needed. Purpose To evaluate TF as a potential surrogate for tumor burden, assessed at contrast-enhanced CT across diverse metastatic cancers. Methods This retrospective monocentric study included patients with cancer and metastatic disease, with TF results and contemporaneous contrast-enhanced CT performed between January 2021 and January 2023.

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Checkpoint inhibitors targeting programmed cell death protein 1 (PD-1)/programmed death-ligand 1 (PD-L1) have revolutionized cancer therapy across many indications including urothelial carcinoma (UC). Because many patients do not benefit, a better understanding of the molecular mechanisms underlying response and resistance is needed to improve outcomes. We profiled tumors from 2,803 UC patients from four late-stage randomized clinical trials evaluating the PD-L1 inhibitor atezolizumab by RNA sequencing (RNA-seq), a targeted DNA panel, immunohistochemistry, and digital pathology.

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Background: In PIVOT-02, bempegaldesleukin (BEMPEG), a pegylated interleukin-2 cytokine prodrug, in combination with nivolumab (NIVO), a Programmed cell death protein 1 inhibitor, demonstrated the potential to provide additional benefits over immune checkpoint inhibitor monotherapy in patients with urothelial carcinoma, warranting further investigation. We evaluated BEMPEG plus NIVO in cisplatin-ineligible patients with previously untreated locally advanced or metastatic urothelial carcinoma.

Methods: This open-label, multicenter, single-arm, phase II study enrolled patients with locally advanced/surgically unresectable or metastatic urothelial carcinoma and who were ineligible for cisplatin-based treatment.

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Background: First-line pembrolizumab monotherapy is a standard of care for platinum-ineligible patients with advanced urothelial carcinoma (UC). No global standardized definition of platinum ineligibility exists. This study aimed to evaluate the efficacy and safety of pembrolizumab monotherapy in patients with UC who met various criteria for platinum ineligibility.

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  • Avelumab is a treatment approved for patients with advanced urothelial carcinoma (aUC) who did not experience disease progression after platinum-based chemotherapy, based on findings from the JAVELIN Bladder 100 trial.
  • The AVENANCE study included 595 patients and assessed the effectiveness and safety of avelumab as a maintenance therapy, revealing a median overall survival of 21.3 months.
  • The results demonstrated that avelumab is effective in this patient population, reinforcing its role in managing aUC in real-world settings.
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The level of evidence for the management of prostate cancer progressing after triplet therapy is currently low. Molecular profiling of patients and enrolment in clinical trials are strongly recommended.

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  • Metastatic urothelial carcinoma (mUC) is a dangerous cancer with few treatment options, and its genetic makeup is not fully understood unlike non-metastatic urothelial carcinoma (UC).
  • A study analyzing genetic data from 111 mUC biopsies found that common genetic changes are similar to those seen in primary UC and highlighted mutational signatures related to APOBEC, platinum sensitivity, and homologous recombination deficiency.
  • The research revealed that a significant portion of mUC patients have potential therapeutic targets, with the most common being FGFR3, ERBB2, TSC1, and PIK3CA, and noted that certain genes like NECTIN4 and TACSTD2 are consistently highly expressed across different
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  • - The MATCH-R trial aimed to analyze the resistance mechanisms to cancer treatments by studying fresh tumor biopsies from metastatic patients, covering data collected from 2015 to 2022.
  • - Out of 1,120 biopsies from patients primarily with lung, digestive, and prostate cancers, 30.9% revealed targetable genomic alterations, with EGFR being the most common altered gene.
  • - Among patients with resistance mechanisms, 45% had treatments tailored based on identified mechanisms, resulting in an average of 11 months of additional clinical benefit.
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Background And Objective: The 2024 US Food and Drug Administration approval of erdafitinib for the treatment of metastatic urothelial carcinoma (mUC) with FGFR3 alterations ushered in the era of targeted therapy for bladder cancer. In this review, we summarize the effects of FGFR pathway alterations in oncogenesis, clinical data supporting FGFR inhibitors in the management of bladder cancer, and the challenges that remain.

Methods: Original articles relevant to FGFR inhibitors in urothelial cancer between 1995 and 2024 were systematically identified in the PubMed and MEDLINE databases using the search terms "FGFR" and "bladder cancer".

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Purpose: Understanding resistance to selective FGFR inhibitors is crucial to improve the clinical outcomes of patients with FGFR2-driven malignancies.

Experimental Design: We analyzed sequential ctDNA, ± whole-exome sequencing, or targeted next-generation sequencing on tissue biopsies from patients with tumors harboring activating FGFR2 alterations progressing on pan-FGFR-selective inhibitors, collected in the prospective UNLOCK program. FGFR2::BICC1 Ba/F3 and patient-derived xenograft models were used for functional studies.

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Purpose: Sacituzumab govitecan (SG) is a Trop-2-directed antibody-drug conjugate with an SN-38 payload, approved for patients with locally advanced (LA) or metastatic urothelial cancer (mUC) who progressed after platinum (PT)-based chemotherapy and a checkpoint inhibitor (CPI). Here, we report results from Cohort 2 of TROPHY-U-01 trial, evaluating the efficacy and safety of SG in patients with mUC.

Methods: TROPHY-U-01 (ClinicalTrials.

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Introduction: High-throughput sequencing techniques have revolutionized oncology. Paired germline-tumor DNA analysis has emerged as a comprehensive strategy to uncover actionable alterations in advanced cancer patients (ACP) enrolled in precision oncology trials. However, challenges persist in variant interpretation and managing incidental germline findings.

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  • Patients with advanced tumors in phase I trials often have strong treatment hopes but limited options; local ablative stereotactic radiation therapy (SRT) can help manage disease progression when oligoprogressive resistance occurs.* -
  • A study analyzed 42 patients receiving SRT for oligoprogressive lesions, finding that SRT significantly extended progression-free survival (7.1 months) and time to the next treatment (12.8 months), with no severe toxicities reported.* -
  • The findings suggest that tumor characteristics, like aggressiveness and clonal diversity, can help distinguish between patients needing different management strategies after SRT, potentially enhancing treatment outcomes.*
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Purpose: Human trophoblast cell surface antigen 2 (Trop-2) is a protein highly expressed in urothelial cancer (UC). Sacituzumab govitecan (SG) is a Trop-2-directed antibody drug conjugate with a hydrolysable linker and a potent SN-38 payload. This study explored Trop-2 expression in tumors treated with SG in cohorts 1 to 3 (C1-3) from the TROPHY-U-01 study and evaluated whether efficacy was associated with Trop-2 expression.

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  • Antibody-drug conjugates (ADCs) are a promising cancer treatment that combines targeted monoclonal antibodies with potent drugs, relying on the expression levels of target proteins in cancer cells for effectiveness.
  • This review analyzes clinical trial results from January 2019 to May 2023, highlighting approved ADCs that show efficacy even in tumors with low levels of target protein expression.
  • It emphasizes the challenges in accurately assessing target protein levels due to inconsistent evaluation methods and the complexity of ADC behavior in the body, advocating for standardized approaches to improve future ADC therapies.
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Background: In the THOR trial (NCT03390504) Cohort 1, erdafitinib demonstrated significantly prolonged overall survival (OS) (median 12.1 versus 7.8 months) and reduced risk of death by 36% (hazard ratio 0.

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  • Atezolizumab was assessed for its safety in a diverse group of patients with pretreated urinary tract carcinoma (UTC) in the SAUL study, which included those typically excluded from clinical trials.
  • The study involved 1004 patients and found that 68 patients continued treatment for over 4 years, with 16% experiencing serious treatment-related adverse events.
  • Long-term results show a median overall survival of 8.6 months, with 14% of patients surviving more than 4 years, indicating the drug's potential benefits in real-world settings with complex patient profiles.
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Objective: To perform a collaborative review of the literature exploring the microsatellite instability/deficient mismatch repair (MSI/dMMR) phenotype in patients with upper tract urothelial carcinoma (UTUC).

Method: A collaborative review of the literature available on Medline was conducted by the Cancer Committee of the French Association of Urology to report studies describing the genetic mechanisms, investigation, prevalence and impact of the MSI/dMMR phenotype in UTUC patients.

Results: The predominant genetic mechanism leading to the MSI/dMMR phenotype in UTUC patients is related to the constitutional mutation of one allele of the MMR genes MLH1, MSH2, MSH6 and PMS2 within Lynch syndrome.

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Background: The application of precision medicine in clinical practice implies a thorough evaluation of actionable genomic alterations to streamline therapeutic decision making. Comprehensive genomic profiling of tumor via next-generation sequencing (NGS) represents a great opportunity but also several challenges. During the 2023 San Raffaele Retreat, we aimed to provide expert recommendations for the optimal use of NGS in urothelial carcinoma (UC).

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Background: This study evaluated the cost-effectiveness of avelumab first-line (1L) maintenance therapy plus best supportive care (BSC) versus BSC alone for adults with locally advanced or metastatic urothelial carcinoma (la/mUC) that had not progressed following platinum-based chemotherapy in France.

Methods: A three-state partitioned survival model was developed to assess the lifetime costs and effects of avelumab plus BSC versus BSC alone. Data from the phase 3 JAVELIN Bladder 100 trial (NCT02603432) were used to inform estimates of clinical and utility values considering a 10-year time horizon and a weekly cycle length.

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Patients with advanced cancer, previously treated with immune checkpoint blockade therapy, may retain residual treatment when undergoing the initial infusion of experimental monotherapy in phase 1 clinical trials. ANV419, an antibody-cytokine fusion protein, combines interleukin-2 (IL-2) with an anti-IL-2 monoclonal antibody, aiming to stimulate the expansion of CD8 T and natural killer lymphocytes while restricting regulatory T lymphocytes. In the recent publication of the phase 1 dose escalation study of ANV419, a notable gap exists in detailed information regarding patients' prior antitumoral treatments, specifically programmed death-1/programmed death-ligand 1 (PD-1/PD-L1) targeted monoclonal antibodies.

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