CELL INTELLIGENCE · 肿瘤细胞治疗研究

Inclusion Criteria:

1. A dated and signed informed consent
2. Either gender and aged over 20 years old (inclusive) at date of consent
3. With histologically confirmed stage I or stage IIa colon cancer
4. Received curative colon resection within 4\~8 weeks prior to the screening visit and does not need adjuvant chemotherapy or radiotherapy
5. With no ≥ grade 3 postoperative complications or has been recovered and is suitable for study enrollment according to the investigator's judgment
6. With adequate hematology function:

   * Absolute neutrophil count (ANC) ≥ 1,500 cells/μL
   * Total white blood cell (WBC) ≥ 3,000 cells/μL
   * Platelets ≥ 100,000 counts/μL
   * Hemoglobin ≥ 9 g/dL
7. With adequate hepatic and renal function:

   * Serum creatinine ≤ 1.5 × Upper Limit of Normal (ULN)
   * Total bilirubin (TB) ≤ 1.5 × ULN
   * ALT and AST ≤ 2.5 × ULN
   * Alkaline phosphatase (ALP) ≤ 5X ULN
8. Negative response in HIV and syphilis test
9. Subject with childbearing potential must agree to abstain from intercourse or use highly effective contraceptives from when signing informed consent to the Final/ET Visit.
10. Performance status (ECOG) \< 2
11. Patients agree to be in compliant to clinical protocol planned treatment plan

Exclusion Criteria:

1. Received any other investigational, anti-neoplastic medication (except squamous cell carcinoma, basal cell carcinoma, or carcinoma in situ of the skin, curatively treated with cryosurgery or surgical excision only), or immune cell therapy within 28 days prior to Day 1.
2. Currently under immunosuppressive or systemic steroid treatment with equivalent dosage higher than prednisolone 30 mg/day for more than 7 days within 14 days prior to Day 1
3. With known tumor metastasis or coexisting malignant disease
4. With ongoing acute diseases, or within the past 2 years having serious medical conditions (e.g. concomitant illness) such as cardiovascular (e.g. New York Heart Association grade III or IV), hepatic (e.g. Child-Pugh Class C), psychiatric condition (e.g. alcoholism, drug abuse), medical history, physical findings, or laboratory abnormality that, judged by the investigator, could interfere with the results of the trial or adversely affect the safety of the subject
5. Known hypersensitivity to aminoglycoside or bacitracin (e.g. Streptomycin, Gentamicin)
6. Known hypersensitivity to any of the components of Magicell-NK, including human serum albumin
7. Female subject who is lactating or has positive urine pregnancy test at screening

主要终点：Number of Participants With Serious Adverse Events (SAEs) and Treatment Emergent Adverse Events (TEAEs) · Number of participants with serious adverse events and treatment emergent adverse events assessed by the Common Terminology Criteria for Adverse Events (CTCAE v5.0) to assess tolerability of Magicell-NK treatment. Evaluation of side effects conducted during the study period. A non-serious adverse event is any untoward medical occurrence. A serious adverse event is an adverse event or suspected adverse reaction that results in death, a life-threatening adverse drug experience, hospitalization, disruption of the ability to conduct normal life functions, congenital anomaly/birth defect or important medical events that jeopardize the patient or subject and may require medical or surgical intervention to prevent one of the previous outcomes mentioned. · Up to 60 weeks；Number of Participants With at Least One Dose Limiting Toxicity · Dose Limiting Toxicity (DLT) as defined by the Common Terminology Criteria for Adverse Events (CTCAE) Version 5.0 as treatment-related any greater or equal to Grade 4 adverse event of hematologic toxicity, or any greater or equal to Grade 3 adverse event of non-hematologic toxicity during Visit 3\~ visit 10. With the exception of (1) fever grade 3 or grade 4 which is controllable by antihistamine and resolves to grade 2 or less within 48 hours, (2) hypersensitivity reactions occurring within 2 hours of infusion finished (related to cell infusion) that are reversible to a grade 2 or less within 48 hours with standard therapy, (3) grade 3 electrolyte imbalance or dehydration that resolves to grade 1 or less within 48 hours, (4) grade 3 nausea, vomiting, or diarrhea which is controllable by standard medication that resolves to grade 1 or less within 48 hours, (5) fatigue which resolves to grade 1 or less within 7 days. · Within 14-day observation of the first treatment. up to 60 weeks；Maximum Tolerated Dose (MTD) and Recommended Phase II Dose (RP2D) · MTD is defined as the highest dose level at which ≤ 1/6 of subjects experiences DLT during Visit 3\~10, when at least 6 patients are treated at that dose and are evaluable for toxicity. Dose escalations proceeded according to a standard 3+3 design. Maximum tolerated dose (MTD) and recommended phase II dose (RP2D) of therapy was determined by monitoring dose-limiting toxicity and adverse events in the dosing cohorts · 3 weeks from start of treatment, up to 60 weeks
次要终点：Disease free survival (DFS)；Changes in Frequency and Duration of ctDNA；Changes in Frequency and Duration of Circulating Tumor Count (CTC) and Programmed Death-Ligand 1 Circulating Tumor Count (PD-L1+ CTC) counts；Changes in Biomarkers (CEA and CA19-9)

• Magicell-NK · EXPERIMENTAL · Magicell-NK Cohort 1: 2 x 10\^8 cells x 6 infusions Cohort 2: 6 x 10\^8 cells x 6 infusions Cohort 3: 12\~18 x 10\^8 cells x 6 infusions

This is a Phase I, open-label study to explore the safety profile and to find the maximum tolerated dose (MTD) or maximum feasible dose (MFD) of Magicell-NK in subjects diagnosed with stage I or stage IIa colon cancer post resection from a single site in Taiwan. During this study, 3 dose levels of Magicell-NK will be tested with a 3+3 design to determine the MTD/MFD: Cohort 1, low dose (2×10\^8 cells), Cohort 2, middle dose (6×10\^8 cells), and Cohort 3, high dose (12\~18 ×10\^8 cells).