for people ages 18 years and up (full criteria)
at Orange, California and other locations
study started
estimated completion



The purpose of this study is to learn about the safety and effects of the study medicine (sasanlimab) in people with non-muscle invasive bladder cancer. This study is seeking participants whose bladder cancer is still in early stages, has not spread outside of the bladder, has been removed with surgery, and is high risk (Part A) or was previously treated with BCG (Bacillus Calmette Guerin), a standard treatment for bladder cancer (Part B). In Part A (enrollment closed), each participant was assigned to one of three study treatment groups. - One group is given sasanlimab and BCG at the study clinic. - The second group is given sasanlimab and BCG at the study clinic. This group will receive BCG for the first six weeks only. - The third group is given BCG only and will not receive sasanlimab. In Part B of the study, each new participant will be assigned to a study treatment group based on the type of their bladder tumor. - Both groups will be given sasanlimab at the study clinic.

Official Title

A Phase 3, Multinational, Randomized, Open-Label, Three Parallel-Arm Study of PF-06801591, an Anti-PD-1 Antibody, in Combination With Bacillus Calmette-Guerin (BCG Induction With or Without BCG Maintenance) Versus BCG (Induction and Maintenance) in Participants With High-Risk, BCG-Naïve Non-Muscle Invasive Bladder Cancer or PF-06801591 as a Single Agent in Participants With BCG-Unresponsive NMIBC


CREST: Combination of sasanlimab and alternative BCG Regimens to Evaluate outcomes with Subcutaneous anti-PD-1 Treatment Phase 3 Design with two Cohorts. Cohort A consists of 3 study Arms (A, B and C) of BCG naive participants. Arms A and B consist of two study drugs, PF-06801591 plus BCG. Arm C consists of one study drug, BCG. Cohort B consists of B1 and B2, which test PF-06801591 and include participants who have BCG unresponsive CIS (B1) or BCG unresponsive papillary only disease (B2). The study is designed to demonstrate that PF-06801591 plus Bacillus Calmette Guerin (BCG) (induction and maintenance periods) is superior to BCG alone (induction and maintenance periods) in prolonging event free survival (EFS) in participants with high-risk naïve non-muscle invasive bladder cancer (NMIBC) and to demonstrate that PF-06801591 plus BCG (induction period only) is superior to BCG alone (induction and maintenance periods) in prolonging EFS in participants with high-risk NMIBC. The study is also designed to estimate the CR rate of PF-06801591 alone in participants with BCG unresponsive CIS and to evaluate the EFS of PF-06801591 alone in participants with BCG unresponsive NMIBC.


Non-muscle Invasive Bladder Cancer, CREST, Sasanlimab, PF-06801591, Bacillus Calmette Guerin, BCG, Bladder cancer, Urinary Bladder Neoplasms, BCG Vaccine, Bacillus Calmette-Guerin, PF-06801591 + BCG induction and maintenance, BCG induction and maintenance, BCG Unresponsive CIS, BCG Unresponsive NMIBC


You can join if…

Open to people ages 18 years and up

  • Histological confirmed diagnosis of high risk non-muscle invasive transitional cell carcinoma (TCC) of the urothelium of the urinary bladder (tumors of mixed transitional/non-transitional cell histology are allowed, but TCC must be the predominant histology)
  • Complete resection of all Ta/T1 papillary disease (including participants with concurrent CIS), with most recent positive TURBT occurring within 12 weeks prior to randomization or study intervention. A second TURBT must have been performed if indicated according to the current locally applicable guidelines, ie, American Urological Association, European Association of Urology
  • (Cohorts B1 and B2 only): Histological confirmed diagnosis of BCG-unresponsive high-risk, non-muscle invasive TCC of the urothelium within 12 months (CIS only) or 6 months (recurrent Ta/T1 disease) of completion of adequate BCG therapy.
  • Have refused or are ineligible for radical cystectomy

You CAN'T join if...

  • Evidence of muscle-invasive, locally advanced or metastatic urothelial cancer or concurrent extravesical, non-muscle invasive TCC of the urothelium
  • (Cohort A only): Intravesical BCG therapy within 2 years prior to randomization. Prior intravesical chemotherapy for NMIBC is allowed.

(Cohorts B1 and B2 only): Any systemic or intravesical chemotherapy or immunotherapy from the time of most recent positive TURBT to initiation of study intervention.

  • Prior immunotherapy with anti PD-1, anti PD-L1, anti PD-L2, or anti cytotoxic T-lymphocyte-associated antigen-4 (CTLA-4) antibody
  • Prior treatment with immunostimulatory agents including interleukin (IL)-2, IL-15, interferon (INF)
  • Prior radiation therapy to the bladder
  • (Cohorts B1 and B2 only): Prior participation in Cohort A of this study.


  • University of California Irvine Medical Center
    Orange California 92868 United States
  • UC San Diego Moores Cancer Center
    La Jolla California 92093 United States
  • Koman Family Outpatient Pavilion
    La Jolla California 92037 United States
  • Sulpizio Cardiovascular Center at UC San Diego Health
    La Jolla California 92037 United States
  • UC San Diego Medical Center - La Jolla (Jacobs Medical Center / Thornton Pavilion)
    La Jolla California 92037 United States


in progress, not accepting new patients
Start Date
Completion Date
To obtain contact information for a study center near you, click here.
Phase 3 Bladder Cancer Research Study
Study Type
Expecting 1160 study participants
Last Updated