Gender- and sex-based disparities in response to immune-checkpoint inhibitors (ICI) has been reported in a variety of tumor types. Women have different anatomy with recurrent urinary tract infections, a different sex hormonal profile, and intrinsic differences in local and systemic immune systems and urobiome composition. Existing literature data in a pan-cancer context reveal contradictory results, and real-world evidence in urothelial carcinoma (UC) is lacking. This was a real-world, multicenter, international, observational study to determine the sex effects on the clinical outcomes in metastatic urothelial carcinoma (mUC) patients progressing or recurring after platinum-based therapy and treated with pembrolizumab as a part of routine clinical care. A total of 1039 patients, treated from January 1st, 2016 to December 31st, 2023 in 68 cancer centers were included. Our data showed that women with metastatic urothelial carcinoma treated with pembrolizumab had shorter OS than men, with a 13% advantage in the 5-year OS rate for male patients. A deeper understanding of these results may inform sex-stratification in future prospective clinical trials and help develop strategies to reduce the magnitude of the sex disparities observed in urothelial cancer outcomes.

• Klíčová slova
• Immunotherapy, NCT05290038, Pembrolizumab, Sex differences, Urothelial Cancer,
• MeSH
• humanizované monoklonální protilátky * terapeutické užití   MeSH
• inhibitory kontrolních bodů terapeutické užití   MeSH
• karcinom z přechodných buněk * farmakoterapie   mortalita   patologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• nádory močového měchýře * farmakoterapie   mortalita   patologie   MeSH
• protinádorové látky imunologicky aktivní * terapeutické užití   MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• sexuální faktory MeSH
• urologické nádory * farmakoterapie   mortalita   patologie   MeSH
• urotel patologie   MeSH
• výsledek terapie MeSH
• Check Tag
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• pozorovací studie MeSH
• Názvy látek
• humanizované monoklonální protilátky * MeSH
• inhibitory kontrolních bodů MeSH
• pembrolizumab MeSH Prohlížeč
• protinádorové látky imunologicky aktivní * MeSH

BACKGROUND: Recently, a plethora of novel systemic agents have been incorporated into the therapeutic armamentarium of advanced urothelial carcinoma (aUC). The antibody-drug conjugate (ADC), enfortumab vedotin (EV), has demonstrated relevant clinical benefit in patients with aUC refractory to platinum and immune-checkpoint inhibitor (ICI) therapy. Our study provides a retrospective, international, real-world analysis comparing the effectiveness of EV to chemotherapy in this setting. METHODS: The data were extracted from the medical records of patients treated with EV or chemotherapy following pembrolizumab for recurrent or progressive aUC after platinum-based chemotherapy. Patients were assessed for overall survival (OS), progression-free survival (PFS), overall response rate (ORR) and duration of response (DoR). RESULTS: Our analysis included 247 patients treated with EV (88, 36%) or chemotherapy (159, 64%). Median OS was 9.1 months (95%CI 7.2-10.7) in the overall study population, 13.6 months (95%CI 10.0-31.0) in patients receiving EV and 6.8 months (95%CI 6.0-8.9) in patients receiving chemotherapy (p < 0.001). The OS benefit of EV was not affected by primary tumour site and histology, metastatic sites, type of first platinum-based chemotherapy or response to pembrolizumab. In the EV cohort, the median PFS was significantly longer (8.8 months [95%CI 6.5-17.0] vs. 3.0 months [95%CI 2.6-3.7]) and the ORR was significantly higher (56% vs. 23%) than in the chemotherapy cohort. CONCLUSIONS: The results of our international analysis of real-world data confirm the effectiveness of EV in the sequential strategy of aUC patients who have received prior platinum-based chemotherapy and anti-PD-1 pembrolizumab, regardless of commonly considered prognostic factors. TRIAL REGISTRATION: ClinicalTrials.gov identifier: NCT05290038.

• Klíčová slova
• ARON‐2 study, NCT05290038, chemotherapy, enfortumab vedotin, pembrolizumab, real‐world data, sequencing, urothelial carcinoma,
• MeSH
• doba přežití bez progrese choroby MeSH
• dospělí MeSH
• humanizované monoklonální protilátky terapeutické užití   aplikace a dávkování   MeSH
• imunokonjugáty * terapeutické užití   aplikace a dávkování   škodlivé účinky   MeSH
• karcinom z přechodných buněk * farmakoterapie   mortalita   patologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• monoklonální protilátky * terapeutické užití   aplikace a dávkování   MeSH
• nádory močového měchýře * farmakoterapie   mortalita   patologie   MeSH
• protokoly protinádorové kombinované chemoterapie * terapeutické užití   škodlivé účinky   MeSH
• retrospektivní studie MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• urologické nádory * farmakoterapie   mortalita   patologie   MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• pozorovací studie MeSH
• Názvy látek
• enfortumab vedotin MeSH Prohlížeč
• humanizované monoklonální protilátky MeSH
• imunokonjugáty * MeSH
• monoklonální protilátky * MeSH
• pembrolizumab MeSH Prohlížeč

BACKGROUND: The benefit of immune checkpoint inhibitors (ICIs) for poor performance status patients with advanced urothelial carcinoma (UC) remains unknown. OBJECTIVE: In the present sub-analysis of the ARON-2 study, we investigated the role of pembrolizumab for advanced UC patients with ECOG (Eastern Cooperative Oncology Group) performance status (ECOG-PS) 2. PATIENTS AND METHODS: Patients aged ≥ 18 years with a cytologically and/or histologically confirmed diagnosis of advanced UC progressing or recurring after platinum-based therapy and treated with pembrolizumab between 1 January 2016 to 1 April 2024 were included. In this sub-analysis we focused on patients with ECOG-PS 2. RESULTS: We included 1,040 patients from the ARON-2 dataset; of these, 167 patients (16%) presented an ECOG-PS 2. The median overall survival (OS) was 14.8 months (95% confidence interval (CI) 12.5-16.1) in the overall study population, 18.2 months (95% CI 15.8-22.2) in patients with ECOG-PS 0-1, and 3.7 months (95% CI 3.2-5.2) in subjects with ECOG-PS 2 (p < 0.001). The median progression-free survival (PFS) in the overall study population was 5.3 months (95% CI 4.3-97.1), 6.2 months (95% CI 5.5-97.1) in patients with ECOG-PS 0-1, and 2.8 months (95% CI 2.1-3.4) in patients with ECOG-PS 2. Among the latter, liver metastases and progressive disease during first-line therapy were significant predictors of OS at both univariate and multivariate analyses. For PFS, univariate and multivariate analyses showed a prognostic role for lung metastases, liver metastases, and progressive disease during first-line therapy. CONCLUSIONS: This large real-world evidence study suggests the effectiveness of second-line pembrolizumab for mUC patients with poor performance status. The presence of liver metastases and progressive disease during first-line therapy is associated with worse clinical outcomes and, thus, should be taken into account when making treatment decisions in clinical practice.

• MeSH
• dospělí MeSH
• humanizované monoklonální protilátky * terapeutické užití   farmakologie   MeSH
• lidé středního věku MeSH
• lidé MeSH
• protinádorové látky imunologicky aktivní terapeutické užití   farmakologie   MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• urologické nádory farmakoterapie   patologie   MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• Názvy látek
• humanizované monoklonální protilátky * MeSH
• pembrolizumab MeSH Prohlížeč
• protinádorové látky imunologicky aktivní MeSH

The addition of metastasis-directed radiotherapy (MDRT) to immunotherapy in patients with advanced urothelial carcinoma (aUC) has shown promising results. We report the real-world data from the ARON-2 study (NCT05290038) on the impact of conventional (CRT) or stereotactic body radiotherapy (SBRT) on the outcome of aUC patients receiving pembrolizumab after platinum-based-chemotherapy. Medical records of 837 patients were reviewed from 60 institutions in 20 countries. Two hundred and sixty-two patients (31%) received radiotherapy (cohort A), of whom 193 (23%) received CRT and 69 (8%) received SBRT. Patients were assessed for overall survival (OS), progression-free survival (PFS), and overall response rate (ORR). Univariate and multivariate analyses were used to explore the association of variables of interest with OS and PFS. With a median follow-up of 22.7 months, the median OS was 10.2 months, 6.8 months and 16.0 months in no RT, CRT and SBRT subgroups (p = 0.005), with an 1y-OS rates of 47%, 34% and 61%, respectively (p < 0.001). The 1y-OS rate in the SBRT subgroup were significantly higher for both lower (63%) and upper tract UC (68%), for pure urothelial histology (63%) and variant histologies (58%), and for patients with bone (40%) and lymph-node metastases (61%). Median PFS was 4.8 months, 9.6 months and 5.8 months in the CRT, SBRT and no RT subgroups, respectively (p = 0.060). The 1y-PFS rate was significantly higher (48%) in the SBRT population and was confirmed in all patient subsets. The difference in terms of ORR was in favour of SBRT. Our real-world analysis showed that the use of SBRT/pembrolizumab combination may play a role in a subset of aUC patients to increase disease control and possibly overall survival.

• Klíčová slova
• ARON-2 study, Pembrolizumab, Radiation therapy, Real-world data, Stereotactic radiation therapy, Urothelial carcinoma,
• MeSH
• doba přežití bez progrese choroby MeSH
• dospělí MeSH
• humanizované monoklonální protilátky * terapeutické užití   aplikace a dávkování   MeSH
• karcinom z přechodných buněk terapie   patologie   mortalita   farmakoterapie   MeSH
• kombinovaná terapie MeSH
• lidé středního věku MeSH
• lidé MeSH
• nádory močového měchýře terapie   patologie   mortalita   farmakoterapie   MeSH
• protinádorové látky imunologicky aktivní terapeutické užití   MeSH
• radiochirurgie metody   MeSH
• retrospektivní studie MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• urologické nádory patologie   mortalita   terapie   farmakoterapie   MeSH
• výsledek terapie MeSH
• Check Tag
• dospělí MeSH
• lidé středního věku MeSH
• lidé MeSH
• mužské pohlaví MeSH
• senioři nad 80 let MeSH
• senioři MeSH
• ženské pohlaví MeSH
• Publikační typ
• časopisecké články MeSH
• multicentrická studie MeSH
• Názvy látek
• humanizované monoklonální protilátky * MeSH
• pembrolizumab MeSH Prohlížeč
• protinádorové látky imunologicky aktivní MeSH