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LEXINGTON, Mass.鈥� July 10, 2019 鈥� TARIS Bio^鈩� today announced the dosing of the first patient in a Phase 1b clinical trial evaluating the investigational product TAR-200 in combination with Opdivo庐 (nivolumab), a programmed death-1 (PD-1) immune checkpoint inhibitor from Bristol-Myers Squibb. The combination will be assessed for safety, tolerability and preliminary efficacy in patients with muscle-invasive bladder cancer (MIBC). This trial is being conducted as part of a clinical collaboration between the companies; Bristol-Myers Squibb is also an equity investor in TARIS.

Bladder cancer affects more than 2.7 million patients worldwide and is among one of the most expensive types of cancers to treat on a per-patient lifetime basis. MIBC is an aggressive and often lethal form of the disease, with the potential for rapid progression and metastasis. The preferred standard of care for MIBC is radical cystectomy (surgical removal of the bladder) with a neoadjuvant course of platinum-based chemotherapy. This neoadjuvant therapy has been shown to confer a survival benefit to patients versus cystectomy alone. Unfortunately, this therapy is utilized in less than 15% of patients scheduled for cystectomy, due primarily to concerns around patient frailty and potential delays to surgery. A neoadjuvant regimen such as the combination of TAR-200 plus Opdivo庐, which has the potential to be used in the large majority of patients not receiving platinum-based therapy, would address a substantial unmet need.

鈥淭his clinical trial will be the first to evaluate the combination of the locally-administered TAR-200 system with a systemic PD-1 checkpoint inhibitor, approved for previously treated adults with advanced bladder cancer,鈥� said Christopher J. Cutie, M.D., Chief Medical Officer of TARIS. 鈥淲e are eager to evaluate the potential antitumor and immunologic synergy of this product combination administered prior to surgery.鈥�

鈥淲e are excited to be working with BMS, an industry leader in oncology, on this clinical study,鈥� said Tony Kingsley, President and Chief Executive Officer of TARIS. 鈥淚t illustrates TARIS鈥� commitment to advancing new therapies for this serious disease, and the potential of TAR-200 to improve outcomes for patients. In parallel, TARIS continues to study TAR-200 as a single agent for the treatment of MIBC patients not receiving surgery.鈥�

The open-label, multi-center, single group assignment Phase 1b clinical study will enroll up to 25 patients with MIBC who are scheduled for radical cystectomy. TAR-200 and Opdivo庐 will each be administered on day one of four consecutive 21-day dosing cycles, for a total dosing period of 84 days prior to radical cystectomy. Information about the trial is available on .

About TAR-200
TARIS鈥� lead investigational product, , is designed to release the chemotherapeutic agent gemcitabine continuously in the bladder for multiple weeks. TARIS believes that TAR-200 has the potential to harness gemcitabine鈥檚 both direct antitumor and immuno-oncologic activity without meaningful systemic drug exposure, yielding a powerful therapy and mitigating systemic side-effects. TAR-200 has been granted Fast Track status by the U.S. Food and Drug Administration for the potential treatment of MIBC patients unfit for curative-intent therapy.

About TARIS Bio鈩�
TARIS Bio is developing transformational therapies to treat people with debilitating urological disorders. The company is unlocking novel epithelial biology through continuous disease engagement with its unique platform. TARIS鈥� lead programs in bladder cancer and overactive bladder position the company to improve patient health and redefine urologic care.

OPDIVO庐 is a registered trademark of Bristol-Myers Squibb Company.