On February 13, 2023 IMV Inc. (Nasdaq: IMV; TSX: IMV) ("IMV" or the "Company"), a clinical-stage biopharmaceutical company developing a portfolio of immune-educating therapies based on its novel DPX platform to treat solid and hematologic cancers, reported positive preliminary data from the VITALIZE Phase 2B trial evaluating its lead DPX product, maveropepimut-S ("MVP-S"), in combination with pembrolizumab in patients with relapsed, refractory Diffuse Large B Cell Lymphoma ("r/r DLBCL") (Press release, IMV, FEB 13, 2023, View Source [SID1234627104]).

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Key initial findings from the ongoing VITALIZE trial:

8 Patients with an ECOG1 score of 0-1 have been enrolled in arm 1 of the study. Of these, 6 have so far been evaluable for efficacy;

Of these 6 evaluable patients, 3 patients showed confirmed complete responses, 1 patient was assessed with stable disease as best response and 2 patients were assessed with progressive disease as best response; and

2 patients with poor level of baseline functionality (ECOG ≥ 2) failed to stay on study through to the first scan and therefore could not be evaluated.

Overall Response Rate ("ORR") will be communicated when the totality of stage one data are available for definitive assessment.

"VITALIZE is our most advanced and rigorous trial to date, and we are encouraged by the way the data for MVP-S are trending. This is the most refractory population of patients we have treated so far, and to show complete, confirmed clinical responses is notable. These positive initial results, combined with the accelerating recruitment of the AVALON study in platinum resistant ovarian cancer add, we believe, to the growing industry enthusiasm about the potential for MVP-S in multiple tumor settings," said Andrew Hall, CEO of IMV.

1 ECOG is a measure of patient functionality and is measured according to a standardized measure ranging from 0-5. Oken et al., Toxicity and response criteria of the Eastern Cooperative Oncology Group. Am J Clin Oncol. 1982 Dec;5(6):649-655. PMID: 7165009

About the VITALIZE Study

The VITALIZE Phase 2B trial is a randomized, parallel group, Simon two-stage study designed to assess IMV’s lead candidate, MVP-S, in combination with pembrolizumab with (arm 1) or without (arm 2) cyclophosphamide. Across the arms of this study, the combination will be evaluated in up to 30 patients in stage one (two arms of 15) with the option to expand to up to a total of 102 subjects in stage two with r/r DLBCL who have received at least two prior lines of systemic therapy and who are ineligible or have failed autologous stem cell transplant (ASCT) or CAR-T therapy.

About the AVALON study

The AVALON study is an open label, company-sponsored phase 2b, single arm trial evaluating the efficacy and safety of MVP-S and intermittent low-dose cyclophosphamide (CPA) in patients with platinum-resistant ovarian cancer. The study is a Simon two-stage design where up to 41 subjects will be evaluated in stage one, with the option to expand to up to a total of 73 patients in stage two. Patients participating in the trial will receive two doses of subcutaneous MVP-S once every three weeks, followed by an MVP-S dose once every eight weeks, plus low-dose oral CPA on a repeating cycle of one week on/one week off.