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- W4387602085 abstract "<div>AbstractPurpose:<p>Bladder preservation is a viable option for some patients with muscle-invasive bladder cancer (MIBC), but an effective noninvasive biomarker test to accurately identify promising candidates is lacking. Here we present the clinical application of a novel tissue-agnostic, urine-based minimal residual disease (MRD) assay in the neoadjuvant setting for personalized disease surveillance and actionable target identification to facilitate bladder-sparing treatment approaches.</p>Patients and Methods:<p>The urinary tumor DNA (utDNA) analysis was evaluated in an investigator-initiated phase I trial RJBLC-I2N003 in which 20 patients diagnosed with resectable MIBC were treated presurgically with the PD-1 inhibitor toripalimab followed by radical cystectomy (RC).</p>Results:<p>We showed that neoadjuvant toripalimab therapy was feasible, safe, and induced a 40% rate (8/20) of pathologic complete response. Longitudinal utDNA profiling outperformed radiographic assessment and conventional biomarkers to predict the pathologic outcome of immune checkpoint blockade. In addition to detecting 3 exceptional responders with molecular MRD-negative status, we identified 7 other individuals characterized for utDNA response and 4 harboring FGFR3 mutants, all of whom (60%, 12/20) could have postponed or avoided RC.</p>Conclusions:<p>These findings demonstrate the safety and efficacy of neoadjuvant toripalimab, and suggest the immense potential of noninvasive utDNA MRD testing to guide tailored decision-making with regard to bladder preservation and change the current treatment paradigm for patients with MIBC.</p></div>" @default.
- W4387602085 created "2023-10-14" @default.
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- W4387602085 date "2023-10-13" @default.
- W4387602085 modified "2023-10-15" @default.
- W4387602085 title "Data from Urinary Tumor DNA MRD Analysis to Identify Responders to Neoadjuvant Immunotherapy in Muscle-invasive Bladder Cancer" @default.
- W4387602085 doi "https://doi.org/10.1158/1078-0432.c.6879432" @default.
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