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Intralesional Cemiplimab for Adult Patients With Cutaneous Squamous Cell Carcinoma or Basal Cell Carcinoma

A Phase 1 Study of Pre-Operative Cemiplimab (REGN2810), Administered Intralesionally, for Patients With Cutaneous Squamous Cell Carcinoma (CSCC) or Basal Cell Carcinoma (BCC)

Status
Completed
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03889912
Enrollment
97
Registered
2019-03-26
Start date
2019-04-11
Completion date
2025-12-10
Last updated
2026-01-21

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Basal Cell Carcinoma, Cutaneous Squamous Cell Carcinoma

Keywords

CSCC, BCC

Brief summary

This study is researching an experimental drug called cemiplimab. The study is focused on Cutaneous Squamous Cell Carcinoma (CSCC) and Basal Cell Carcinoma (BCC). The aim of the study is to evaluate the safety and tolerability (how your body reacts to the drug) of cemiplimab (also known as REGN2810). The first part of the study tested several different doses of cemiplimab given weekly for 12 weeks. The study is also looking at several other research questions, including: * What side effects may happen from taking the study drug * To see effect of cemiplimab on the tumor * How much study drug is in the blood at different times

Interventions

DRUGCemiplimab

Each patient will receive intralesional injections of cemiplimab every week (QW), or at less frequent dosing into the lesion at the assigned dose level for 3-12 weeks prior to scheduled surgery

Sponsors

Regeneron Pharmaceuticals
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Cohorts A, B, D and H will enroll sequentially (not randomized). Cohort C and I for BCC will enroll in parallel with, and independently of, Cohorts A, B, D and H for CSCC patients

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria 1. Dose Escalation: History of recurrent resectable CSCC or BCC (Cohort C and I only) that satisfies conditions as defined in the protocol 2. Patients must have measurable disease in the index lesion, defined as 1-2 cm in the longest diameter 3. Eastern Cooperative Oncology Group (ECOG) performance status ≤1 Key

Exclusion criteria

1. Ongoing or recent (within 5 years) evidence of significant autoimmune disease that required treatment with systemic immunosuppressive treatments, which may suggest risk for immune-mediated adverse events (imAEs) 2. Prior treatment with an agent that blocks the programmed cell death 1 (PD-1)/ programmed cell death 1 ligand (PD-L1) pathway. 3. Prior treatment with other systemic immune modulating agent as defined in the protocol 4. M1 or N1, N2 (a, b, or c), or N3 CSCC or BCC. Patients with history of metastatic CSCC (distant or nodal), or metastatic BCC (distant or nodal) are excluded unless the disease-free interval is at least 3 years 5. Concurrent malignancies, other than those with negligible risk of metastasis or death. Patients with hematologic malignancies, including chronic lymphocytic leukemia (CLL), are excluded. 6. Patients with a history of solid organ transplant 7. Has received a Coronavirus induced disease of 2019 (COVID-19) vaccination (initial series and booster) within 1 week of planned start of study medication Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frameDescription
Incidence and severity of TEAEs graded according to the NCI CTCAE v5From the first dose up to 90 days after the last dose
The incidence and severity of injection site reactions (ISRs)From the first dose to 90 days after the last dose
Incidence, nature, and severity of dose limiting toxicities (DLTs) (if any) graded according to the National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI CTCAE) v5From the first dose through day 28Dose levels 1-3
Incidence, nature, and severity of treatment-emergent adverse events (TEAEs) graded according to the National Cancer Institute-Common Terminology Criteria for Adverse Events (NCI CTCAE) v5From the first dose to 90 days after the last doseDose levels 1-3

Secondary

MeasureTime frameDescription
Objective response rate (ORR) of index lesionAt baseline and at Week 13Determined by the investigator using the modified World Health Organization (WHO) criteria
Pathologic complete response rate (or end of treatment biopsies, for patients who decline surgery) in index lesionAt time of surgery
Selection of the recommended dose of cemiplimab for further study based on clinical and pharmacokinetic (PK) observationsUp to 90 days after last doseThe determination of the phase 2 recommended dose will be based primarily on clinical safety observations, according to the dose escalation scheme.
Major pathologic response rate (or end of treatment biopsies, for patients who decline surgery) in index lesionAt time of surgery
Cemiplimab concentration in serum over timeFrom the first dose up to 90 days after the last dose
Incidence of anti-drug antibody (ADA) titers for cemiplimabUp to 90 days after last dose

Countries

Australia, Netherlands, United States

Contacts

STUDY_DIRECTORClinical Trial Management

Regeneron Pharmaceuticals

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 6, 2026