Clinical study to evaluate safety (primary objectives) and efficacy (secondary objective) of ET1402L1-ARTEMIS™2 T cells in patients with alpha fetoprotein positive (AFP+ ) hepatocellular carcinoma (HCC).
The molecular target for ET1402L1-ARTEMIS™2 is human leukocyte antigen (HLA) -A02 complexed with a HLA-A02-restricted peptide of alpha fetoprotein (AFP), which is expressed on 60-80 percent of hepatocellular carcinoma (HCC). ARTEMIS™2 is a second generation ARTEMIS™ receptor engineered with a human antibody domain against the anti-HLA-A02/AFP complex. This clinical study evaluates the safety and pharmacokinetics of ET1402L1-ARTEMIS™2 T-cells in patients with HCC who have no available curative therapeutic options and a poor overall prognosis. Patients with lesion(s) localized in liver will be enrolled in the intra-hepatic artery (IA) arm or Intratumoral Injections arm, with the ET1402L1-ARTEMIS™2 T-cells administered via intrahepatic artery catheter. Patients with extrahepatic metastasis will be enrolled in the intravenous (IV) arm, with the ET1402L1-ARTEMIS™2 T-cells administered through intravenous infusion.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
12
Autologous T cells transduced with lentivirus encoding an anti-AFP (ET1402L1) -ARTEMIS™2 expression construct -intravenous (i.v.) arm
Autologous T cells transduced with lentivirus encoding an anti-AFP (ET1402L1) -ARTEMIS™2 expression construct: intra-hepatic artery (i.a.) arm
Autologous T cells transduced with lentivirus encoding an anti-AFP (ET1402L1) -ARTEMIS™2 expression construct: Intratumoral Injections (i.t.) arm
The First Affiliated Hospital of Xi'an Jiaotong University
Xi'an, China
Number of patients with dose-limiting toxicity
A dose limiting toxicity is defined as any toxicity that is considered to be primarily related to the ET1402L1-ARTEMIS™2 T-cells, which is irreversible, or life threatening or CTCAE Grade 3-5. Assessed at all visits.
Time frame: 28 days up to 2 years
Frequency of ARTEMIS T cell treatment-related adverse events
Include but not limited to: Fever, chills, nausea, vomiting, jaundice and other gastrointestinal symptoms; Fatigue, hypotension, respiratory distress; Tumor lysis syndrome; Cytokine release syndrome; Neutropenia, thrombocytopenia; Liver and kidney dysfunction. Assessed at all visits.
Time frame: Time Frame: 28 days up to 2 years
Rate of disease response by RECIST in the liver
Response rates will be estimated as the percent of patients with objective response (OR),which was defined as any of complete remission (CR), partial response (PR) at 2 years.
Time frame: 2 years
Rate of disease response by RECIST at non-liver sites
Response rates will be estimated as the percent of patients with objective response (OR),which was defined as any of complete remission (CR), partial response (PR) at 2 years.
Time frame: 2 years
Progression free survival (PFS)
Progression free survival (PFS) at 4 months, 1 year and 2 years
Time frame: at 4 months, 1 year, 2 years
Median Survival(MS)
Median Survival(MS)at 4 months, 1 year and 2 years
Time frame: at 4 months, 1 year, 2 years
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Overall survival(OS)
overall survival(OS)at 2 years
Time frame: at 2 years
AFP serum levels
Percent change compared to the baseline
Time frame: 2 years
Number of ET1402L1-ARTEMIS™2 T cells in peripheral blood
Number of ET1402L1-ARTEMIS™2 T cells in peripheral blood will be presented as Time to peak, Time to baseline level
Time frame: 2 years
% of ET1402L1-ARTEMIS™2 T cells in peripheral blood
%of ET1402L1-ARTEMIS™2 T cells in peripheral blood will be presented as Time to peak, Time to baseline level
Time frame: 2 years
AFP expression in tumors
Percent of AFP-positive cells in randomly selected fields in tumor biopsies.
Time frame: 4-8 weeks
Tmax of serum Interleukin (IL)-2, IL-4, IL-6, IL-10, Tumor necrosis factor(TNF)-α and Interferon gamma (INFγ)
Increase or decreases in the amount of serum IL-2, IL-4, IL-6, IL-10, TNF-α and INF-γ produced compared to baseline at time points measured up to 24 weeks since dosing. Data will be presented as time to peak level for Tmax.
Time frame: 24 weeks
AUC of serum IL-2, IL-4, IL-6, IL-10, TNF-α and INFγ
Increase or decreases in the amount of serum IL-2, IL-4, IL-6, IL-10, TNF-α and INFγ produced compared to baseline at time points measured up to 24 weeks since dosing. Data will be presented as time to peak level for area under curve (AUC).
Time frame: 24 weeks
Time to baseline for serum IL-2, IL-4, IL-6, IL-10, TNF-α and INFγ
Increase or decreases in the amount of IL-2, IL-4, IL-6, IL-10, TNF-α and INFγ produced compared to baseline at time points measured up to 24 weeks since dosing.
Time frame: 24 weeks