CTLA4 and skin reaction: The adverse effects included severe myelosuppression, mild skin reactions, hypothyroidism, and Grade 3 hyperglycemia, all of which were managed symptomatically.<h4>Conclusion</h4>This case illustrates how effective AK104/Cadonilimab (a PD-1/CTLA-4 bispecific) can be when combined with albumin-bound paclitaxel for treating advanced UCCC, especially in patients who have not responded to standard therapies.