On February 26, 2026 ImmVira Group reported preliminary positive results from its clinical trial evaluating MVR-T3011, an oncolytic virus, in BCG-naïve high-risk papillary Ta/T1 NMIBC patients for its leading oncolytic virus product, MVR-T3011, via intravesical administration. The data were presented in a poster at the ASCO (Free ASCO Whitepaper) GU 2026 Conference in San Francisco, California.
Schedule your 30 min Free 1stOncology Demo!
Discover why more than 1,500 members use 1stOncology™ to excel in:
Early/Late Stage Pipeline Development - Target Scouting - Clinical Biomarkers - Indication Selection & Expansion - BD&L Contacts - Conference Reports - Combinatorial Drug Settings - Companion Diagnostics - Drug Repositioning - First-in-class Analysis - Competitive Analysis - Deals & Licensing
Schedule Your 30 min Free Demo!
In the study involving 18 BCG-naïve high-risk papillary Ta/T1 NMIBC patients treated with intravesical MVR-T3011 at two dose levels: 2×109 PFU (3 patients) and 1×1010 PFU (15 patients), preliminary data as of December 31, 2025, demonstrated encouraging efficacy and durability. Among the 14 evaluable patients, the 12-month recurrence-free-survival (RFS) rate was 100% (3/3) at the 2×109 PFU dose level. At the 1×1010 PFU dose level, the 3-month RFS rate was 100% (11/11). The 6-month and 9-month RFS rates were 75% (3/4) and 66.7% (2/3), respectively, but these data are preliminary, given the small patient numbers reaching those timepoints.
Consistent with BCG-unresponsive clinical data, MVR-T3011 maintained a favorable safety profile in this study with most treatment-emergent adverse events (TEAEs) being at Grades 1 or 2. No treatment-related adverse events (TRAEs) were observed.
Bladder cancer ranks as the ninth most prevalent cancer worldwide[1], with approximately 75% of cases classified as NMIBC. While Bacillus Calmette-Guerin (BCG) remains the current SOC for high-risk NMIBC, global shortages have limited its availability. As a result, oncolytic immunotherapy, which offers enhanced immune activation and potential durability, is emerging as a promising alternative.
"We are highly encouraged by the preliminary efficacy and safety data from the study," said Dr. Grace Zhou, Chairwoman and CEO of ImmVira. "MVR-T3011 shows its potential to serve as a reliable and widely accessible alternative to BCG, ultimately benefiting patients worldwide."
(Press release, Immvira, FEB 26, 2026, View Source [SID1234663094])