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Personalized Neoantigen Vaccine Plus IL-12 (INO-9012) Versus Active Surveillance in Subjects With High-Risk HCC

IMPACT31: A Randomized Open-label, Multi-center, Phase II Adjuvant Study of a Personalized Neoantigen DNA Vaccine (GNOS-PV02) and Plasmid Encoded IL-12 (INO-9012) Versus Active Surveillance in Subjects With High-Risk HCC

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07722741
Acronym
IMPACT31
Enrollment
90
Registered
2026-07-23
Start date
2026-09-01
Completion date
2032-06-01
Last updated
2026-09-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

HCC

Brief summary

This is a randomized, open-label, multi-site Phase II study of a personalized neoantigen DNA vaccine (GNOS-PV02) and plasmid encoded IL-12 (INO-9012) in subjects with histologically or cytologically confirmed diagnosis of HCC based on pathology report, who were eligible to undergo definitive resection, have demonstrated laboratory, radiographic and/or pathologic high-risk criteria for recurrence (described under eligibility), have no evidence of disease (NED) as per MRI approximately 28 days post resection, and are able to provide a tissue sample for personalized neoantigen DNA vaccine development.

Interventions

BIOLOGICALGNOS-PV02 + INO-9012 delivered by intradermal injection, followed by electroporation

delivered by intradermal injection and electroporation

DEVICEElectroporation Device

GNOS-PV02 + INO-9012 ID followed by electroporation

BIOLOGICALINO-9012

cytokine interleukin-12 (IL-12), a vaccine adjuvant

Sponsors

Geneos Therapeutics
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Adjuvant Therapy, Active Surveillance

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

1. Written informed consent 2. ≥18 years of age 3. Histologically or cytologically confirmed diagnosis of HCC (not accepted: fibrolamellar, sarcomatoid, mixed cholangiocarcinoma) 4. Child-Pugh Class A liver score 5. Documented virology status of hepatitis 6. Availability of a representative post-resection tumor tissue sample 7. ECOG performance status of 0 or 1 8. Adequate organ function 9. Women of childbearing potential (WOCBP) and men must be willing to use an adequate method of contraception

Exclusion criteria

1. Is currently participating in and receiving study drug or has participated in a study of an investigational agent and received study drug or used an investigation device, within 4 weeks to baseline 2. Evidence of residual, recurrent, or metastatic disease at randomization 3. Active or history of autoimmune disease or immune deficiency 4. Diagnosis of immunodeficiency or is receiving systemic steroid therapy or any other form of immunosuppressive therapy within 7 days prior to the first dose of study drug 5. Diagnosed additional malignancy within 5 years prior to baseline, except for: (a) non-invasive carcinomas subject to successful curative treatment in the opinion of the investigator which require no further therapy and (b) other malignancies for which subjects have undergone potentially curative therapy and have been considered disease free for at least 3 years prior to screening. 6. Active infection requiring systemic therapy 7. Is pregnant, breastfeeding or expecting to conceive or father children within the study's projected duration 8. History of human immunodeficiency virus (HIV) (HIV I/II antibodies). 9. Co-infection with HBV and hepatitis D viral infection 10. Co-infection with HBV and HCV 11. Has received a live vaccine within 30 days of planned start of study

Design outcomes

Primary

MeasureTime frameDescription
Recurrence-free survivalUp to 5 yearsRFS is defined as the time from randomization to any recurrence (local, locoregional, regional or distant), occurrence of new primary HCC, as assessed by the investigator, or death due to any cause, whichever occurs first.

Secondary

MeasureTime frameDescription
Incidence of treatment emergent adverse events (safety and tolerability)Up to 5 yearsSummary adverse events according to CTCAE 6.0
Time to extra-hepatic spread or macro-vascular invasionUp to 5 yearsTime to extra-hepatic spread or macro-vascular invasion (TTEHS/MVI)
Overall survivalUp to 5 years on study + 3 years follow upOS is defined as time from randomization to death of any cause
RFS rate at 12, 18 and 24 months as assessed by the investigatorRandomization up to 12 months, 18 and 24 monthsThe proportion of patients who remain free from disease recurrence after treatment over a specified period
RFS rate at 12, 18 and 24 months as assessed by the BIRCRandomization up to 12 months, 18 months and 24 monthsThe proportion of patients who remain free from disease recurrence after treatment over a specified period

Countries

New Zealand, United States

Contacts

CONTACTJoann Peters, MHA
peters@geneostx.com434-825-2551

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Sep 5, 2026