One hundred patients will receive IFx-Hu2.0 on an outpatient basis at a single time point in a single lesion. These patients will be assessed for any immediate adverse reactions and at Week 4 (Day 28+/-5 days) for any delayed adverse events..

This is a multi-site, open-label, interventional, prospective, phase 1 trial to assess safety and tolerability of IFx-Hu2.0 in patients with basal cell carcinoma, squamous cell carcinoma, or cutaneous melanoma.

A total of approximately one hundred (100) male and/or female adult patients (greater than or equal to 18 years old), of any ethnicity and race, with at least one cutaneous melanoma, squamous cell carcinoma, or basal cell carcinoma lesion accessible for direct injection, who meet all inclusion and no exclusion criteria, will be eligible for enrollment and treatment with IFx-Hu2.0.

Enrollees will receive IFx-Hu2.0 as a single intralesional injection at a single time point. The target dose will be 100 μg of plasmid DNA per lesion injected at a final dose volume of 200 μL per lesion. The injected lesion will be completely excised at the follow-up visit four weeks later and will be biopsied for confirmation of diagnosis and for the establishment of a pathological response baseline peripheral blood will be collected from these patients prior to treatment administration and at the follow-up visit four weeks later. These samples will be used to perform complete blood counts (CBC) and clinical chemistry tests. A urine sample will be obtained for urinalysis for protein and blood at the same frequency. Blood samples will be drawn for immune response evaluation as well.

Inclusion Criteria:

1. Provision of signed and dated informed consent form

2. Stated willingness to comply with all study procedures and availability for the duration of the study

3. Ability to receive intralesional injections

4. Male or female, aged ≥ 18 years

5. Histologically confirmed cutaneous squamous cell carcinoma, or basal cell carcinoma with accessible lesions (based on archival tissue or new tissue biopsy for histological confirmation)

6. Life expectancy of at least 24 weeks at the time of screening

7. Eastern Cooperative Oncology Group (ECOG) performance status of 0 to 1

8. Must have measurable disease greater than 3 mm

9. At least one injectable lesion

10. Adequate organ function as defined below (Note: these screening laboratory tests must be obtained within two weeks prior to the baseline visit, Day 0):

    10.1. Hemoglobin (Hb) >10 g/dL 10.2. Absolute Neutrophil Count (ANC) >1,500 cells/mcL 10.3. Platelet Count (PLT) >75,000/mcL 10.4. Prothrombin Time (PT) or International Normalized Ratio (INR) ≤1.5 times the institutional ULN unless patient is receiving anticoagulant therapy as long as PT or INR is within therapeutic range of the intended use of anticoagulants.

    10.5. Activated Partial Thromboplastin Time (aPTT) ≤1.5 times the institutional ULN unless patient is receiving anticoagulant therapy as long as aPTT is within therapeutic range of the intended use of anticoagulants.

    10.6. Serum Creatinine (SCr) ≤1.5 times the institutional ULN 10.7. Total Bilirubin ≤1.5 times the institutional ULN 10.8. Aspartate Aminotransferase (AST) ≤3 times the institutional ULN 10.9. Alanine Aminotransferase (ALT) ≤3 times the institutional ULN 10.10. Lactate Dehydrogenase (LDH) ≤2 times the institutional ULN 10.11. Alkaline Phosphatase (ALP) ≤2.5 times the institutional ULN 10.12. Gamma GT (GGT) ≤2.5 times the institutional ULN

11. Lymphocyte count ≥500,000 cells/mL

12. For females of reproductive potential: must have a negative urine or serum pregnancy test result within 24 hours prior to receiving IFx-Hu2.0; must use highly effective contraception (e.g.,licensed hormonal or barrier methods) for at least one month prior to screening and agreement to use such a method during study participation and for an additional 26 weeks after the end of study treatment

13. For males of reproductive potential: use of barrier method or other methods to ensure effective contraception with partner

Exclusion Criteria:

1. Concurrent participation in any other clinical trial
2. Inability to consent for self
3. Lesions on scalp with bone erosions must not be selected as injection sites for IFx-Hu2.0
4. Life expectancy of fewer than 24 weeks at the time of screening
5. Prior systemic anti-cancer treatment within three weeks from start of treatment (Day 0)
6. Treatment with any investigational product within the three weeks preceding injection
7. Concurrent chemotherapy or biological therapy. Concurrent radiotherapy is allowed as long as it is not the same site as the injected lesion.
8. Current treatment with systemic immunosuppressive corticosteroid (greater than 10 mg of daily prednisone) doses or other immunosuppressants such as those needed for solid organ transplants. Medications needed to treat conditions such as reactive airway disease are not excluded.
9. Is pregnant, breastfeeding, or expecting to conceive or father children within the projected duration of the trial, starting with the pre-screening or screening visit through 26 weeks after the last dose of trial treatment
10. Immunizations for encapsulated bacteria were not given for patients who have undergone a splenectomy
11. Serious underlying medical or psychiatric conditions, active infections requiring the use of antimicrobial drugs, or active bleeding that would make the subject unsuitable or unable to participate in the study
12. Active Human Immunodeficiency Virus (HIV)/Acquired Immunodeficiency Syndrome (AIDS) or Hepatitis B/C. Patients with treated HIV/AIDS or Hepatitis B/C with no evidence of active infection may be enrolled
13. History of organ allograft transplantation
14. Presence of any uncontrolled and significant medical or psychiatric condition which would interfere with trial safety assessments

Day 0 to 28 days ± 7 business days from the last dose administered.

Any untoward or unfavorable medical occurrence in a participant, including any abnormal sign (for example, abnormal physical exam or laboratory finding), symptom, or disease, temporally associated with the participant's participation in the research, whether or not considered related to the participant's participation in the research.