Open-Label Proof of Concept Study of VP-315 in Basal Cell Carcinoma

Inclusion Criteria

• Adults ≥18 years of age
• Clinically suspected BCC with at least 1 and up to 5 eligible lesion(s) suitable for biopsy and excision
• Willing to refrain from using nonapproved topical agents on, or within 2 cm of, the target BCC lesions and surrounding areas during the treatment period. Subjects should use topical agents that are gentle (eg, Aquaphor, CeraVe) and will not irritate the skin in these areas.
• Willing to refrain from exposure to direct sunlight or ultraviolet light and to avoid the use of tanning parlors for the duration of the study
• Written informed consent obtained, including consent for tissue to be examined by the central dermatopathologist and stored by the Sponsor or designee
• Willing to undergo BCC surgical excision procedure of target and nontarget BCC lesions after study treatment
• Willing to delay surgical excision of target and nontarget BCC lesions until the end of treatment (EOT) visit
• Provides written consent to allow photographs of the target and nontarget BCC lesion to be used as part of the study data
• Willing to practice a highly effective method of birth control while on study and until 4 weeks after the last treatment. Highly effective birth control includes sexual abstinence, vasectomy, bilateral tubal ligation/occlusion, or a condom with spermicide (men) combined with hormonal birth control or intrauterine device in women.

BCC Lesion Eligibility

Eligible lesions are those that meet the BCC lesion eligibility specifications described herein, from samples that are either from:

• HISTORICAL punch or shave biopsies (i.e., samples collected according to clinical standard of care collected within the 90 days prior to W1D1);
• A 2-mm punch biopsy collected within 90 days of W1D1 for suspected BCC ≥0.5 cm to 1.0 cm, and 3-mm punch biopsy for suspected BCC >1.0 cm to 2.0 cm; or
• A shave biopsy performed according to standard of care to include superficial or middle papillary dermis collected within 90 days of W1D1.

Lesions must meet the following criteria to be eligible for treatment

BCC Lesion Inclusion Criteria

• For punch biopsies: the size of the lesion(s) must be ≥0.5 cm and 1.5× the upper limits of normal and
• serum tryptase concentration >11.4 ng/mL
• Chronic medical condition that in the judgment of the investigator(s) would interfere with the performance of the study or would place the subject at undue risk, such as, but not limited to:
• Uncontrolled infection or infection requiring antibiotics
• Uncontrolled cardiac failure: Classification III or IV New York Heart Association
• Subjects presenting with a systolic BP <110 mmHg and/or diastolic BP <70 mmHg at Screening or Week 1 Day 1 or a history of cerebrovascular or cardiac disorders, or subjects at particular risk of sequelae following a short hypotensive episode.
• Uncontrolled systemic or gastrointestinal inflammatory conditions
• Known bone marrow dysplasia
• History of positive tests for human immunodeficiency virus/acquired immunodeficiency syndrome or active hepatitis B or C
• History of systemic autoimmune disease requiring anti-inflammatory or immunosuppressive therapy within 3 months prior to Day 1, with the following exceptions:

i. Subjects with a history of autoimmune thyroiditis are eligible provided the subject requires only thyroid hormone replacement therapy and disease has been stable for ≥1 year

ii. Subjects with well-controlled type I diabetes (in the opinion of the investigator) are eligible

h. Known mast cell activation syndrome, mastocytosis, or chronic idiopathic urticaria

• Known sensitivity to any of the ingredients in the study medication
• Elective surgery within 4 weeks prior to the screening visit, during the study, or 4 weeks after the treatment period
• Evidence of current chronic alcohol or drug abuse
• Current enrollment in an investigational drug or device study or participation in such a study within 4 weeks of the screening visit
• In th