Guiding Instillation in Non Muscle-invasive Bladder Cancer Based on Drug Screens in Patient Derived Organoids

"In PDOs from patients that show highest response to Epirubicin, this drug will be instilled intravesically once weekly for 6 times.~Epirubicin is also the default drug, in case of failure of drug prediction in the in-vitro drug screen in PDO.~Epirubicin will be used as a concentrate for injection/instillation 2 mg/ml in total 50mg per vial. Prior to use, the concentrate for injection is diluted with 25ml of 0.9% saline solution to obtain the final Solution with 1mg/ml of Epirubicin."

"In PDOs from patients that show highest response to Mitomycin, this drug will be instilled intravesically once weekly for 6 times.~Mitomycin C will be used as 20mg dry powder. Prior to use, the powder will be dissolved in 50ml of 0.9% saline solution according to the manufacturer instructions"

"In PDOs from patients that show highest response to Gemcitabine, this drug will be instilled intravesically once weekly for 6 times.~Gemcitabine will be used as 2000 mg/50ml. For intravesical application, 1000mg of gemcitabine (corresponding to 25ml) will be diluted in 25ml 0.9% saline solution, to obtain the gemcitabine concentration of 1000mg/50ml used for instillation."

"In PDOs from patients that show highest response to Docetaxel, this drug will be instilled intravesically once weekly for 6 times.~Docetaxel will be used as 140mg/7ml solution. For intravesical application, 48.825ml of saline will be added to 1.875ml Docetaxel solution (according 37.5mg of Docetaxel). The concentration of this solution is 0.74mg/ml by a total volume of the instillation solution of 50,7."