MP23-04 BENEFIT OF NEOADJUVANT CHEMOTHERAPY FOR INVASIVE BLADDER CANCER PATIENTS TREATED WITH RADIATION-BASED THERAPY: AN INVERSE PROBABILITY TREATMENT WEIGHTED ANALYSIS. (May 2022) - Kool, Ronald; Dragomir, Alice; Kulkarni, Girish; Marcq, Gautier; Breau, Rodney; Kim, Michael; Busca, Ionut; Abdi, Hamidreza; Dawidek, Mark; Uy, Michael; Fervaha, Gagan; Alimohamed, Nimira; et al.