ADSTILADRIN - gene therapy

Hi - Has anyone tried ADSTILADRIN? I am currently NED on Keytruda, I’ve been on it for 1 year and NED since my first 6 week Cystoscopy check up, insurance has approved me for another year of Keytruda. I’ve tried BCG and chemo in my bladder a few times. My Dr is wanting me to try ADSTILADRIN.