Safety of SNK01 in Subjects With Pathologically Confirmed Metastatic and/or Unresectable Cancer Refractory to Conventional Therapy

This is an interventional treatment trial for Refractory Cancer focused on measuring Natural killer cell, NK cell, Expanded natural killer cell, Immunotherapy, Cancer, Metastatic cancer, Advanced solid tumor, Refractory cancer, Recurrent cancer, Unresectable carcinoma, Solid tumor, Neoplasms Read More

Inclusion Criteria:

• Voluntary written informed consent signed by patient, obtained prior to study enrollment.
• Males and females ages 18 to 75 years, inclusive.
• Pathologically confirmed diagnosis of refractory cancer that has failed three or more prior lines of conventional standard of care therapy.
• Diagnosed with any histologically confirmed malignancy whose disease is confirmed to be metastatic and/or unresectable for which standard curative or beneficial treatments are no longer effective.
• Eastern Cooperative Oncology Group (ECOG) performance status <2.
• At least 4 weeks since any prior systemic therapy (excluding corticosteroid therapy) to treat the underlying malignancy (standard or investigational).
• At least 2 weeks since prior palliative radiotherapy.

• Adequate bone marrow function:

  • Neutrophils: 2.0-8.0 K/uL
  • Platelet Count: 140-440 K/uL
  • Hemoglobin: 10.0-18.0 g/dL
  • No ongoing transfusion requirements

• Adequate hepatic function:

  • Serum total bilirubin < 1.5 x upper limit of normal (ULN)
  • Serum albumin ≥ 3.0 g/dL
  • Alanine transaminase (ALT) and aspartate transaminase (AST) ≤ 2.5 x ULN
  • International normalized ratio (INR) ≤ 1.5 x ULN
• Adequate renal function with creatinine ≤ 2.0 mg/dL.
• Negative pregnancy test for women of childbearing potential and use of effective contraception (hormonal or barrier method of birth control) during study.

Exclusion Criteria:

• Pregnant and/or lactating females.
• Life expectancy of less than three months.
• Currently being treated by "biological therapy" as defined by the National Cancer Institute (example: checkpoint inhibitors, adoptive cell transfer, monoclonal antibodies, treatment vaccines, cytokines, Bacillus Calmette-Guerin (BCG), chimeric antigen receptor T cell therapy (CAR-T), and natural killer cell therapy).
• Patients tested positive for hepatitis B and/or C surface antigen.
• High fever or any active or unresolved infection, including human immunodeficiency virus (HIV) positive.
• Autoimmune disease requiring therapy; immunodeficiency, or any disease process requiring immunosuppressive therapy.
• Prior clinical trial requiring patient to receive an investigational drug within two weeks of enrollment.
• Congestive heart failure, unstable angina or other underlying cardiac disease; history of thrombosis currently requiring anticoagulation.
• Mental or psychological illness preventing cooperation with treatment, efficacy evaluations, or unable to understand the informed consent process.
• Subjects who have undergone prior organ transplantation, including allogeneic stem-cell transplantation.
• Adult subjects who lack capacity to consent for themselves and for whom consent must be provided by a legally authorized representative.
• For SNK01+avelumab arm only: Subjects with prior hypersensitivity to avelumab or its excipients, including known severe hypersensitivity reactions to monoclonal antibodies (NCI CTCAE v4.03 Grade ≥ 3).
• For SNK01+avelumab arm only: Subjects with a significant immune-mediated adverse event due to a prior checkpoint inhibitor immunotherapy that led to permanent discontinuation of the therapy.