BACKGROUND: Immune checkpoint inhibitors (ICI) and chemotherapy, including antibody-drug conjugates, are widely used for the treatment of patients with advanced unresectable or metastatic urothelial carcinoma (UC). The majority of elderly patients receive concomitant medications to address various comorbidities. We aimed to evaluate the impact of concomitant medications on oncological outcomes in patients with advanced unresectable or metastatic UC treated with systemic therapy. MATERIAL & METHODS: In August 2024, three datasets were queried for studies evaluating concomitant medications in patients with advanced unresectable or metastatic UC. The review protocol was registered in PROSPERO (CRD42024547335). The primary outcome was overall survival (OS). A fixed- or random-effects model was used for meta-analysis depending on the heterogeneity. RESULTS: We identified 16 eligible studies (3 prospective and 13 retrospective) comprising 4,816 patients. Most reported concomitant medications included proton pump inhibitors (PPIs), antibiotics, steroids, and opioids. The use of concomitant PPIs, antibiotics, steroids or opioids during ICI therapy was associated with worsened OS (PPIs: HR: 1.43, 95% CI: 1.31-1.57, p < 0.001; antibiotics: HR: 1.2, 95% CI: 1.04-1.38, p = 0.01; steroids: HR: 1.45, 95% CI: 1.25-1.67, p < 0.001; and opioids: HR: 1.74, 95% CI: 1.46-2.07, p < 0.001). Concomitant use of antibiotics during chemotherapy did not impact OS (HR: 1.01, 95% CI: 0.67-1.51). CONCLUSIONS: When treating advanced unresectable or metastatic UC with ICI therapy, we need to pay attention to concomitant medications, such as PPIs and antibiotics to avoid reducing the efficacy of ICI therapy. The mechanism of action of these drugs on ICI efficacy requires further examination.

• Klíčová slova
• Antibiotics, steroids, Concomitant medications, Histamine type-2 receptor antagonists, Immune checkpoint inhibitors, Opioids, Proton pump inhibitors, Urothelial carcinoma,
• MeSH
• inhibitory kontrolních bodů * terapeutické užití   MeSH
• karcinom z přechodných buněk * diagnóza   farmakoterapie   mortalita   sekundární   MeSH
• lidé MeSH
• metastázy nádorů MeSH
• protinádorové látky * terapeutické užití   MeSH
• urologické nádory * diagnóza   farmakoterapie   mortalita   patologie   MeSH
• výsledek terapie MeSH
• Check Tag
• lidé MeSH
• Publikační typ
• časopisecké články MeSH
• metaanalýza MeSH
• systematický přehled MeSH
• Názvy látek
• inhibitory kontrolních bodů * MeSH
• protinádorové látky * MeSH