IMV Announces Finalization of the Basket Clinical Study in Collaboration with Merck and Reveals Promising Top Line Data from the Bladder and MSI-High Cohorts

On December 21, 2021 IMV Inc. (NASDAQ: IMV; TSX: IMV), a clinical-stage company developing a portfolio of immune-educating therapies based on its novel DPX platform to treat solid and hematologic cancers, reported the finalization of the basket clinical study evaluating maveropepimut-S (MVP-S, previously known as DPX-Survivac) in combination with Merck’s KEYTRUDA in patients with metastatic bladder and Micro-Satellite Instability High (MSI-H) solid tumors (Press release, IMV, DEC 21, 2021, View Source [SID1234597542]).

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"The top line clinical data from both the bladder and MSI-Hi cohorts are promising, further showcasing the potential of MVP-S as an immune-educating therapy in multiple cancer indications," said Jeremy Graff, Ph.D., Chief Scientific Officer at IMV. "We are particularly encouraged by the responses in patients previously treated with immune checkpoint inhibitors and look forward to meeting with our key opinion leaders to map out follow-on studies in these indications."

Olivier Rixe, M.D., Ph.D., Director, Principal Investigator at Quantum Santa Fe in New Mexico, and Principal Investigator of the study, commented, "We are especially motivated by the responses observed in advanced, metastatic bladder cancer, where patients previously treated with an immune checkpoint inhibitor demonstrated clinical response, including complete responses."

All clinical benefit were evaluated according to the iRECIST/RECIST criteria. A more complete set of data, including evaluation of PD-L1 and other measures will be presented at an upcoming scientific conference.

About the basket Study

This Phase 2 basket trial is an open label, multi-center study, evaluating MVP-S across five cohorts of patients with bladder cancer, liver cancer (hepatocellular carcinoma), ovarian cancer (with and without CPA), NSCLC (Non-Small Cell Lung Cancer) and tumors shown to be positive for the microsatellite instability high (MSI-H) biomarker.

Subjects received MVP-S in combination with pembrolizumab and/or intermittent low dose cyclophosphamide (CPA). The study was designed to assess primary endpoints of safety and objective response rate (ORR), with multiple secondary and exploratory measures. IMV enrolled 131 patients across clinical sites in the U.S. and Canada. Monitoring is ongoing for patients on treatment, but enrollment is now closed.

Data from the other basket indications have been previously communicated.

KEYTRUDA is a registered trademark of Merck Sharp & Dohme Corp., a subsidiary of Merck & Co., Inc., Kenilworth, NJ, USA