How would you manage metastatic small cell/neuroendocrine bladder cancer after response to 6 cycles of platinum/etoposide?

I would consider maintenance avelumab in patients with metastatic small cell carcinoma of the bladder achieving stable or responding disease after platinum-etoposide. Notably, the JAVELIN Bladder-100 trial that led to the approval of maintenance avelumab included urothelial carcinoma and not predomi...