A Study Comparing Cemiplimab-based Treatments for Adult Participants With Locally Advanced Basal Cell Skin Cancer (laBCC)

September 1, 2026 updated by: Regeneron Pharmaceuticals

Phase 2 Platform Trial of Combination Therapies for Participants With Locally Advanced Basal Cell Carcinoma: Master Protocol With Cemiplimab Monotherapy as Comparator Arm

This study will test an experimental Regeneron drug called cemiplimab ("study drug") given alone or in combination with other anti-cancer drugs ("combination treatment") to see if they can help treat laBCC.

The study is looking at:

  • What side effects cemiplimab, alone or in a combination treatment, might cause
  • How well cemiplimab, alone or in a combination treatment, works
  • How cemiplimab, alone or in a combination treatment could affect the immune system, which can help researchers understand why cemiplimab, alone or in a combination treatment, works better in some participants than others

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
135

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Key Inclusion Criteria:

  1. Histologic confirmation of BCC by local board-certified pathologist, as described in the protocol
  2. At least one lesion that is measurable by study criteria, defined as ≥ 1cm in at least one dimension, as assessed by radiology and/or digital medical photography, as described in the protocol
  3. The treating physician must document that the participant is not appropriate for curative-intent surgery or curative-intent radiation
  4. The treating physician must document that the participant does not wish to receive a hedgehog pathway inhibitor (HHI) or is not a candidate for an HHI
  5. Eastern Cooperative Oncology Group (ECOG) performance status ≤ 1

Subsequent Therapy Arm - specific inclusion criteria:

  1. Documentation of histopathologic diagnosis of basal cell carcinoma - NOT necessary
  2. Submission of tumor or blood for exploratory correlative research - NOT necessary

Key Exclusion Criteria:

  1. Metastatic disease to lymph node(s) or distant site(s) (Note: involvement of lymph node due to direct invasion from overlying cutaneous BCC is still considered laBCC, and is not excluded)
  2. History or current evidence of significant cardiovascular disease, as described in the protocol
  3. Exposure to any prior systemic therapy (eg, HHI or an immune checkpoint inhibitor) or locally injectable agent for laBCC, as described in the protocol
  4. Current participation OR past participation in another investigational trial in which an investigational intervention (eg, drug, vaccine, invasive device) was administered within 4 weeks before planned first dose of study intervention in this clinical trial.

Subsequent Therapy Arm - specific exclusion criteria:

1. Receipt of any anti-cancer therapy (including HHIs, radiation, surgery, or other systemic therapy) for BCC, AFTER treatment on Arms A, B, or C.

NOTE: Other protocol defined inclusion/exclusion criteria apply

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Arm A
Drug: Cemiplimab
Administered per the protocol
Other Names:
  • REGN2810
  • Libtayo®
Experimental: Arm B
Drug: Cemiplimab
Administered per the protocol
Other Names:
  • REGN2810
  • Libtayo®
Drug: Vidutolimod
Administered per the protocol
Other Names:
  • CMP001
Experimental: Arm C
Drug: Cemiplimab
Administered per the protocol
Other Names:
  • REGN2810
  • Libtayo®
Drug: Fianlimab
Administered per the protocol
Other Names:
  • REGN3767
Experimental: Subsequent Therapy Arm
Drug: Cemiplimab
Administered per the protocol
Other Names:
  • REGN2810
  • Libtayo®
Drug: Fianlimab
Administered per the protocol
Other Names:
  • REGN3767
Drug: Vidutolimod
Administered per the protocol
Other Names:
  • CMP001

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Objective Response Rate (ORR) by blinded independent central review (BICR) per Composite Response Criteria
Time Frame: Up to approximately 3 years
Composite Response Criteria integrates radiology findings [Response Evaluation Criteria in Solid Tumors (RECIST) 1.1] and external lesion assessments from digital photography [modified World Health Organization (WHO) criteria].
Up to approximately 3 years

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Duration of Response (DOR) by BICR per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Time to Response (TTR) by BICR per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Best Overall Response (BOR) of Complete Response (CR) by BICR per composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Progression-Free Survival (PFS) by BICR per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Objective Response by investigator review per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
DOR by investigator review per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
TTR by investigator review per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Complete Response (CR) by investigator review per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
PFS by investigator review per Composite Response Criteria
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Occurrence of Treatment-Emergent Adverse Events (TEAEs)
Time Frame: Up to approximately 3 years
Up to approximately 3 years
Severity of TEAEs
Time Frame: Up to approximately 3 years
Up to approximately 3 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Regeneron Pharmaceuticals

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Clinical Trial Management, Regeneron Pharmaceuticals

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
October 15, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 13, 2030

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 13, 2030

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 1, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 1, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 9, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
September 9, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 1, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
July 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • CMP001-ONC-2607

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

All Individual Patient Data (IPD) that underlie publicly available results will be considered for sharing

IPD Sharing Time Frame

When Regeneron has:

  • received marketing authorization from major health authorities (e.g., FDA, European Medicines Agency (EMA), Pharmaceuticals and Medical Devices Agency (PMDA), etc.) for the product and indication or has globally discontinued development of the product for all indications on or after April 2020 and has no plans for future development
  • made the study results publicly available (e.g., scientific publication, scientific conference, clinical trial registry)
  • the legal authority to share the data, and
  • ensured the ability to protect participant privacy.

IPD Sharing Access Criteria

Qualified researchers can submit a proposal for access to individual patient or aggregate level data from a Regeneron-sponsored clinical trial through Vivli. Regeneron's Independent Research Request Evaluation Criteria can be found at: https://www.regeneron.com/sites/default/files/Regeneron-External-Data-Sharing-Policy-and-Independent-Research-Request-Evaluation-Criteria.pdf

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP
  • ICF
  • ANALYTIC_CODE
  • CSR

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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