Phase III Randomized Trial of Concurrent Chemoradiotherapy With or Without Atezolizumab in Localized Muscle Invasive Bladder Cancer (Study SWOG/NRG 1806)


This phase III trial studies how well chemotherapy and radiation therapy work with or without atezolizumab in treating patients with localized muscle invasive bladder cancer. Radiation therapy uses high energy rays to kill tumor cells and shrink tumors. Drugs used in chemotherapy, such as gemcitabine, cisplatin, fluorouracil and mitomycin-C, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading.

Giving chemotherapy with radiation therapy may kill more tumor cells. Immunotherapy with monoclonal antibodies, such as atezolizumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Giving atezolizumab with radiation therapy and chemotherapy may work better in treating patients with localized muscle invasive bladder cancer compared to radiation therapy and chemotherapy without atezolizumab.


  • Ages: 18 and older
  • Sexes: All
  • Accepts healthy volunteers?: No
For additional eligibility criteria, please contact the study team.


Active Comparator: Arm I (RT, chemotherapy)

Patients undergo RT (3D CRT or IMRT) Monday-Friday for up to 7 weeks. Patients also receive chemotherapy based on physician's choice of gemcitabine IV twice weekly for 6 weeks, or cisplatin IV weekly for 6 weeks concurrent with RT, or fluorouracil IV on same days as doses 1-5 and 16-20 of radiation therapy, and mitomycin IV on day 1 of radiation therapy in the absence of disease progression or unacceptable toxicity.

Experimental: Arm II (RT, chemotherapy, atezolizumab)
Patients undergo RT (3DCRT or IMRT) Monday-Friday for up to 7 weeks and receive chemotherapy based on physician's choice as in Arm I. Patients also receive atezolizumab IV over 60 minutes on day 1 of chemotherapy. Treatment repeats every 21 days for a total of 6 months (9 doses total) in the absence of disease progression or unacceptable toxicity.

Contact the study team

Additional eligibility criteria and study procedure details can be explained by the study team. Please call or email:

Diane Richardson
Phone: 352.265.0702


18 to 65
65 and over




Chemoradiotherapy, Bladder cancer, Radiation therapy

Principal Investigator

Paul Crispen, MD



Contact Information


Be an Informed Participant

Before deciding to participate in a research study, take time to learn about clinical research, how it's conducted and your rights as a research participant. Following are some helpful resources from independent sources. Always remember that a clinical research study is research, not treatment.

Know Who to Contact

  • Eligibility: For questions about a specific study and who is eligible to participate, call or email the contact person listed for that study.
  • Your Rights: For questions about your rights as a research participant, contact the UF Institutional Review Boards at 352-273-9600.
  • Feedback: For general questions or feedback about study listings, email the UF Clinical and Translational Science Institute at

Other Resources

  • HealthStreet: Health-focused services, classes and events, and opportunities to participate in research.
  • Join a national registry of volunteers willing to be contacted about research studies.

For Research Teams