Protara Therapeutics Data From Phase 2 ADVANCED-Study Of TARA-002 In Participants With Carcinoma Shows 72% Complete Response Rate; Favorable Safety And Tolerability Profile Observed

Protara Therapeutics, Inc. (Nasdaq: TARA), a clinical-stage company developing transformative therapies for the treatment of cancer and rare diseases, today announced updated interim data from the ongoing Phase 2 open-label ADVANCED-2 trial of TARA-002 in patients with carcinoma in situ or CIS (± Ta/T1) non-muscle invasive bladder cancer (NMIBC). These results in Bacillus Calmette-Guérin (BCG)-Naïve NMIBC patients will be featured during a poster session at the 26th Annual Meeting of the Society of Urologic Oncology (SUO) in Phoenix, Arizona.

The dataset includes 31 BCG-Naïve patients who received at least 1 dose of TARA-002; 29 patients completed at least one response assessment and were evaluable for efficacy as of a November 7, 2025 data cutoff. Patients received an induction course of six weekly intravesical instillations of TARA-002, followed by a maintenance course of three weekly instillations every three months. Re-induction was permitted for eligible patients with residual CIS and/or recurrent high-grade Ta disease. Complete response (CR) rates at the six months and 12 months landmark time points include all participants who were either evaluable at that time point or had experienced disease progression or treatment failure prior to the scheduled visit.