Patients will be enrolled in two stages: * Dose-escalation stage: Approximately 12-24 patients will be enrolled.
Detailed Description: • Dose-escalation stage : designed as classical 3+3 to determine MTD(Maximum tolerable dose), RP2D(Recommended Phase 2 Dose) and DLT(Dose-limiting toxicity)s to evaluate approximately four dose levels of GX-I7 * pre-determined dose(Level I)\~ pre-determined dose(Level IV)
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
15
During Treatment Period, patients will receive the assigned dose of GX-I7 intramuscular injection every 4\~12 weeks per cycle up to 6 cycles in the absence of unacceptable toxicity or clinically compelling evidence of disease progression.
The Catholic University of Korea Seoul St. Mary's Hospital
Seoul, Seocho, South Korea
DLT(Dose-Limiting Toxicity) Assessment
Incidence and nature of DLT(Dose-Limiting Toxicity)s
Time frame: Through study completion, an average of 2 years
Incidence, nature and severity of Adverse events
Incidence, nature and severity of adverse events graded according to NCI CTCAE v4.0
Time frame: Through study completion, an average of 2 years
PD(pharmacodynamic) profile [ALC result]
Changes of ALC(Absolute lymphocyte count) from the baseline
Time frame: Through study completion, an average of 2 years
Anti-tumor Activity [OS]
Objective response(OS) defined as the time from the date of diagnosis to the death from any cause
Time frame: Through study completion, an average of 2 years
Anti-tumor Activity [PFS]
Progression-free survival (PFS) defined according to iRANO(Immunotherapy Response Assessment for Neuro-Oncology)
Time frame: Through study completion, an average of 2 years
Immunogenicity[ ADA and neutralizing antibody]
Incidence of anti-GX-I7 antibody (ADA) and neutralizing antibody during the study
Time frame: Through study completion, an average of 2 years
Exploratory Biomarker [serum Interleukin-7]
Changes in serum Interleukin-7
Time frame: Through study completion, an average of 2 years
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