High-activity Natural Killer Immunotherapy for Small Metastases of Colorectal Cancer

Study Overview
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Brief Summary
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The aim of this study is the safety and efficacy of high-activity natural killer immunotherapy to small metastases of colorectal cancer.

Detailed Description
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By enrolling patients with small metastases of colorectal cancer adapted to enrolled criteria, this study will document for the first time the safety and the short and long term efficacy of high-activity natural killer cells. The safety will be evaluated by statistics of adverse reactions. The efficacy will be evaluated according to local relief degree, progress free survival (PFS) and overall survival (OS).

Conditions
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Metastatic Colorectal Cancer

Intervention / Treatment
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* Biological: High-activity natural killer


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All standard therapies have failed according to NCCN guidelines or the patient refuses standard therapies after cancer recurrence Body tumor 1-6, the maximum tumor length < 2 cm KPS ≥ 70, lifespan > 6 months Platelet count ≥ 80×109/L，white blood cell count ≥ 3×109/L, neutrophil count ≥ 2×109/L, hemoglobin ≥ 80 g/L Exclusion Criteria: Patients with cardiac pacemaker Patients with brain metastasis Patients with grade 3 hypertension or diabetic complication, severe cardiac and pulmonary dysfunction

Ages Eligible for Study
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Minimum Age: 30 Years
Maximum Age: 60 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: High-activity natural killer<br>In this group, the patients will receive multiple high-activity natural killer (HANK) immunotherapies. The check indexes are CT scan and blood tests (including tumor markers, lymphocyte subsets and circulating tumor cell). | Biological: High-activity natural killer<br>* Each treatment: 8 10 billion cells in all, transfuion in 3 times, i.v.<br>* Other names: HANK cell;|
| No Intervention: Control<br>In this group, the patients will receive no special treatment. The check indexes are CT scan and blood tests (including tumor markers, lymphocyte subsets and circulating tumor cell). | |

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Relief degree of tumors | It will be evaluated by the Response Evaluation Criteria in Solid Tumors（RECIST） | 3 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Progress free survival（PFS） |  | 1 year | 
| Overall survival（OS） |  | 3 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Metastatic colorectal cancer, High-activity natural killer