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Study Evaluating Cemiplimab Alone and Combined With RP1 in Treating Advanced Squamous Skin Cancer

A Randomized, Controlled, Open-Label, Phase 2 Study of Cemiplimab as a Single Agent and in Combination With RP1 in Patients With Advanced Cutaneous Squamous Cell Carcinoma

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04050436
Acronym
CERPASS
Enrollment
231
Registered
2019-08-08
Start date
2019-10-08
Completion date
2025-09-30
Last updated
2025-01-27

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

Conditions

Advanced Cutaneous Squamous Cell Carcinoma, Cutaneous Squamous Cell Carcinoma, Metastatic Cutaneous Squamous Cell Carcinoma

Keywords

Oncolytic Virus, Carcinoma, Carcinoma, Squamous Cell, Cemiplimab, Metastatic Cutaneous Squamous Cell Carcinoma, Oncolytic Immuno-gene therapy

Brief summary

To estimate the clinical benefit of cemiplimab monotherapy versus cemiplimab in combination with RP1 for patients with locally advanced or metastatic CSCC, as assessed by overall response rate (ORR) and complete response rate (CRR) according to blinded independent review.

Detailed description

RP1 is a selectively replication competent herpes simplex virus type 1(HSV-1). This is a Phase 1/2, open-label, multicenter repeat-dosing study of RP1 alone and in combination with nivolumab in patients with advanced malignancies, and contains both single agent dose escalation, dose expansion to include nivolumab, and the combination in multiple Phase 2 cohorts in individual tumor types.

Interventions

DRUGCemiplimab

Cemiplimab administered intravenously

BIOLOGICALRP1

RP1 administered intratumorally

Sponsors

Regeneron Pharmaceuticals
CollaboratorINDUSTRY
Replimune Inc.
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

Key Inclusion Criteria: * Histologically confirmed locally advanced or metastatic cutaneous squamous cell carcinoma * Patients with locally advanced disease who are not suitable candidates for surgical or radiological treatment of lesions or have refused those treatments * At least 1 lesion that is measurable and injectable by study criteria * Eastern Cooperative Oncology Group (ECOG) performance status ≤1. Patients with ECOG PS 2 at baseline may be allowed to enroll if PS 2 status is only related to the CSCC disease under study * Anticipated life expectancy \>12 weeks * All patients must consent to provide archived or newly obtained tumor material for central pathology review for confirmation of diagnosis of CSCC. Key

Exclusion criteria

* Prior treatment with an oncolytic therapy * Patients with active significant herpetic infections or prior complications of HSV-1 infection (e.g. herpetic keratitis or encephalitis) * Patients who require intermittent or chronic use of systemic (oral or intravenous) anti-virals with known anti-herpetic activity (e.g. acyclovir) * Ongoing or recent (within 5 years) evidence of significant autoimmune disease that required treatment with systemic immunosuppressive treatments * Prior treatment with an agent that blocks the PD-1/PD-L1 pathway. * Prior treatment with other immune modulating agents other than as adjuvant or neoadjuvant therapy within 3 years. * Untreated brain metastasis(es) that may be considered active. * Acute or chronic active hepatitis B or known history of hepatitis B or hepatitis C or human immunodeficiency virus (HIV) infection * History of ILD/pneumonitis within the last 5 years or a history of ILD/pneumonitis requiring treatment with systemic steroids. * Any major or surgical procedure ≤ 28 days before randomization * Administration of live vaccines ≤ 28 days before randomization Note: Other protocol defined Inclusion/

Design outcomes

Primary

MeasureTime frame
Objective Response Rate (ORR) according to blinded independent reviewup to 5 years
Complete Response Rate (CRR) according to blinded independent reviewup to 5 years

Secondary

MeasureTime frame
ORR/CRR for patients with metastatic or locally advanced disease according to investigator review and blinded independent reviewup to 5 years
ORR/CRR for patients who have and have not previously received systemic CSCC-directed therapy and blinded independent reviewup to 5 years
Duration of Response (DOR) per investigator review and blinded independent reviewup to 5 years
Progression-free Survival (PFS) per investigator reviewup to 5 years
Progression Free Survival (PFS) by blinded independent review.up to 5 years
3-year survival3 years
Change in overall scores of patient-reported outcomes in European Organisation for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30)approximately 30 months
Evaluation of the safety and tolerability of cemiplimab alone and combined with RP1 as assessed via adverse events (AEs)approximately 26 months
Overall Survival (OS)up to 5 years
ORR/CRR by investigator assessment and blinded independent reviewup to 5 years

Countries

Australia, Bulgaria, Canada, France, Germany, Greece, Italy, Poland, Spain, United States

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026