About this trial
VET3-TGI is an oncolytic immunotherapy designed to treat advanced cancers. VET3-TGI has not been given to human patients yet, and the current study is designed to find a safe and effective dose of VET3-TGI when administered by direct injection into tumor(s) (called an intratumoral injection) or when given intravenously (into the vein) both alone and in combination with atezolizumab in patients with solid tumors (STEALTH-001).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Have pathologically confirmed, advanced, unresectable, or metastatic solid tumors. Preferred indications include, but are not limited to, breast carcinoma, bladder carcinoma, cervical squamous carcinoma, colorectal carcinoma, esophageal carcinoma, head and neck squamous carcinoma, renal cell carcinoma, ovarian carcinoma, sarcoma, thymoma, and uterine carcinoma.
Failed, intolerant to, or refused potentially curative treatment options, including but not limited to, standard of care molecularly targeted agents, immunotherapy (e.g., anti -pembrolizumab/PDL1 antibodies), and chemotherapy
Measurable disease as per RECIST 1.1 criteria
At least one tumor amenable to safe ITu injections and/or biopsies
Disqualifiers
Prior systemic therapy washout (dependent upon the therapy)
Requires use of anti-platelet or anti-coagulant therapy that cannot be safely suspended for per protocol biopsies or intra-tumoral injections.
CNS metastases and/or carcinomatous meningitis that have not been completely resected or completely irradiated.
Prior history of myocarditis
Trial design
Parallel
Treatments tested in this trial
VET3-TGI
DrugOncolytic vaccinia virus engineered with immunomodulatory transgenes
Atezolizumab
Druganti-pd-L1 antibody
Treatment groups
Trial outcomes
Primary outcomes
Incidence of adverse events with VET3-TGI alone or in combination with atezolizumab
Percentage of patients with adverse events by grade as determined by NCI CTCAE v5.0
Incidence of dose limiting toxicities reported with VET3-TGI alone or in combination with atezolizumab
Number of dose limiting toxicities, as defined in the protocol, by dose group
Determine the recommended Phase 2 dose
he highest dose of VET3-TGI in each group that can be administered where fewer than 2 patients have a dose-limiting safety event alone or when combined with atezolizumab as assessed by NCI CTCAE v.5.0 during the Phase 1 dose escalation
Secondary outcomes
Efficacy assessment: overall response rate (ORR)
The number and proportion of patients with a partial response (PR) or complete response (CR) on imaging by RECIST 1.1
Efficacy assessment: Duration of response (DOR)
Median duration of response in patients with a CR or PR
Efficacy assessment: disease control rate (DCR)
The number and proportion of patients with stable disease (SD), or a partial response (PR) or complete response (CR) on imaging by RECIST 1.1
Efficacy assessment: Time to tumor progression (TTP)
Median time until patient disease progression (PD)
Sponsors and contacts
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