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Starting immunotherapy right after chemotherapy, rather than waiting for relapse, lengthened survival by about seven months.
JAVELIN Bladder 100, trial NCT02603432 sponsored by Merck KGaA and Pfizer and reported in 2020, showed that starting avelumab immunotherapy immediately after platinum chemotherapy, rather than waiting for relapse, lengthened survival in advanced urothelial cancer. It randomised 700 patients without progression after four to six cycles of platinum chemotherapy to avelumab maintenance with best supportive care or supportive care alone and met its primary overall survival endpoint, making avelumab maintenance the standard after platinum for four years. OnCo links it to bladder cancer, avelumab and Thomas Powles. It was superseded rather than contradicted when EV-302 displaced platinum from first-line treatment for most patients, and it remains relevant where enfortumab vedotin plus pembrolizumab is unavailable or contraindicated.
Numbers are from the trial as recorded here; see the source links in the table below. This is orientation, not medical advice: ask your team how closely the trial population matches you.
700 enrolled.
| Endpoint | Arm | n | Value | HR (95% CI) | p | Source |
|---|---|---|---|---|---|---|
| Overall survivalprimary | Avelumab + BSC | 350 | 21.4 months | 0.69 (0.56 to 0.86) | 0.001 | link |
| BSC | 350 | 14.3 months |
The full inclusion and exclusion criteria are on the registry record. Read 2026-10-07. Recruiting overall does not mean a particular site is open; ask the study team.
ClinicalTrials.gov data courtesy of the US National Library of Medicine.
Shares Merck KGaA (EMD Serono), Avelumab, Bladder & urothelial cancer, Immune checkpoint inhibitors.
Shares Merck KGaA (EMD Serono), Avelumab, Immune checkpoint inhibitors.
Shares Avelumab, Pfizer (incl. Seagen), Immune checkpoint inhibitors.
Shares Pfizer (incl. Seagen), Bladder & urothelial cancer, Immune checkpoint inhibitors.
Shares Thomas Powles, Bladder & urothelial cancer, Immune checkpoint inhibitors.
Shares Avelumab, Immune checkpoint inhibitors.
Shares Avelumab, Immune checkpoint inhibitors.
Shares Merck KGaA (EMD Serono), Pfizer (incl. Seagen), Immune checkpoint inhibitors.
Every source this page cites, grouped by who published it. Grouping is read from the web address, not assigned by hand.
A source that has moved or gone is reported by the weekly link check. /audit/