Treatment
Participants will be randomized 2:1 to receive either BNT323/DB-1303 or investigator's choice of single agent chemotherapy (doxorubicin or paclitaxel).
Treatment duration
The treatment with BNT323/DB1303 can continue until disease progression, unacceptable toxicities or until you decide to stop.
Contact
To be able to give you the best information and care we do not give medical advice via mail. We kindly ask you to make an appointment via lgog@uzleuven.be.