Clinical trial Recruiting at 50 sites Phase 3 Interventional Ages 18 and up

Using cemiplimab to treat early-stage skin cancer

Official title: A Phase 3 Randomized Study of Intralesional Cemiplimab Versus Primary Surgery in Participants With Early Stage Cutaneous Squamous Cell Carcinoma (CSCC)

Run by Regeneron Pharmaceuticals · NCT06585410 · Data updated 2026-11-12

This study tests if injecting a new immune treatment called cemiplimab directly into early-stage skin cancer can work better than regular surgery.

More Cutaneous Squamous Cell Carcinoma (CSCC) trials

Quick facts

PhasePhase 3
Study typeInterventional
Ages18 Years and up
SexAll
Enrollment369 (estimated)
SponsorRegeneron Pharmaceuticals
Industry-sponsored
Drugs / interventionscemiplimab
Locations53 sites (Phoenix, Arizona and 52 other locations)
StatusRecruiting
StartedJanuary 2, 2025
Main results expectedMay 3, 2030
Study endsMay 3, 2030
Registry record updatedSeptember 16, 2026
Trial IDNCT06585410 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults with histologically confirmed invasive CSCC tumors measuring between 1 cm and 2 cm located in specific areas such as the head, neck, hand, or pre-tibial surface.

Probably not a fit

Patients with tumors that are keratoacanthomas, basal cell carcinomas, or other specified skin cancers will not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study evaluates the effectiveness of cemiplimab, an immune checkpoint inhibitor, in treating early-stage cutaneous squamous cell carcinoma (CSCC) by injecting it directly into the tumor. The primary goal is to compare the outcomes of cemiplimab treatment with standard surgical options. Researchers will also monitor the side effects associated with cemiplimab. Participants must have specific tumor characteristics and be eligible for surgical resection.

Why it matters

Potential benefit: If successful, this treatment could provide a non-surgical option for patients with early-stage CSCC, potentially reducing the need for invasive procedures.

How similar studies have gone: Other studies have shown promise with immune checkpoint inhibitors in treating various cancers, suggesting potential success for this approach in CSCC.

Who can join: the full rules

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

1. Participants who have a histologically confirmed invasive CSCC TL, as described in the protocol
2. Participants who have CSCC TL ≥1 cm and ≤2.0 cm (longest diameter) prior to biopsy and \>0.7 cm to ≤2.0 cm after biopsy, located in either the Head or Neck (HN), hand, or pre-tibial surface, as described in the protocol
3. Participants who are judged to be eligible for surgical resection of their CSCC TL and the method of planned surgical resection would be Micrographically oriented histographic surgery (Mohs) or other surgical method of Complete Margin Assessment (CMA). Participants for whom the planned surgery is surgical excision without margin control are not eligible
4. Eastern Cooperative Oncology Group (ECOG) performance status (PS) ≤1
5. Adequate hepatic, renal and bone marrow functions, as described in the protocol

Key Exclusion Criteria:

1. Participant in which the TL is a keratoacanthoma (KA), adenosquamous carcinoma, desmoplastic carcinoma, sarcomatoid carcinoma, basal cell carcinoma, basosquamous carcinoma, Bowen's disease, or CSCC in situ without an invasive component. (Note: For participants with invasive CSCC with a minor basaloid component, the patient may be eligible after discussion with the sponsor medical director.)
2. 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), as described in the protocol
3. History of non-infectious pneumonitis within the last 5 years
4. TL (lesion planned for intralesional therapy) or other non-target CSCC lesion in dry red lip (vermillion), oral cavity, or nasal mucosa

NOTE: Other protocol defined inclusion / exclusion criteria apply.

Where it's running

  • Medical Dermatology Specialists - Phoenix
    Phoenix, Arizona, United States
    Recruiting
  • Mayo Clinic - Arizona
    Scottsdale, Arizona, United States
    Recruiting
  • University of Arizona Cancer Center
    Tucson, Arizona, United States
    Recruiting
  • Arkansas Research Trials
    North Little Rock, Arkansas, United States
    Recruiting
  • UC San Diego Moores Cancer Center
    La Jolla, California, United States
    Recruiting
  • Profound Research, Dermatology Medical Group - Oceanside
    Oceanside, California, United States
    Recruiting
Show 44 more locations
  • Stanford University
    Redwood City, California, United States
    Recruiting
  • Peak Dermatology, Aesthetics and Wellness
    Visalia, California, United States
    Recruiting
  • George Washington University Medical Faculty Associates
    Washington D.C., District of Columbia, United States
    Recruiting
  • Life Clinical Trials
    Coral Springs, Florida, United States
    Recruiting
  • Dermatology Associates of the Palm Beaches, Integri Research at Dermatology Associates
    Delray Beach, Florida, United States
    Recruiting
  • University of South Florida
    Tampa, Florida, United States
    Recruiting
  • University of Chicago Medical Center
    Chicago, Illinois, United States
    Recruiting
  • Oak Dermatology
    Naperville, Illinois, United States
    Recruiting
  • US Dermatology Partners DBA DermAssociates, PC
    Rockville, Maryland, United States
    Recruiting
  • Northeast Dermatology Associates
    Beverly, Massachusetts, United States
    Recruiting
  • Dana-Farber Cancer Institute
    Boston, Massachusetts, United States
    Recruiting
  • MyMichigan Dermatologic Oncology
    Midland, Michigan, United States
    Recruiting
  • Somerset Skin Centre
    Troy, Michigan, United States
    Recruiting
  • Dermatology and Skin Cancer Center
    Lee's Summit, Missouri, United States
    Recruiting
  • Washington University in St. Louis - Center for Dermatologic and Cosmetic Surgery
    St Louis, Missouri, United States
    Recruiting
  • Las Vegas Dermatology
    Las Vegas, Nevada, United States
    Recruiting
  • StracSkin, PLLC
    Portsmouth, New Hampshire, United States
    Recruiting
  • University of New Mexico
    Albuquerque, New Mexico, United States
    Recruiting
  • Memorial Sloan Kettering Cancer Center
    New York, New York, United States
    Recruiting
  • Columbia University Medical Center - Herbert Irving Center for Dermatology and Skin Cancer - Herbert Irving Pavilion
    New York, New York, United States
    Recruiting
  • Rochester Dermatologic Surgery, P.C.
    Victor, New York, United States
    Recruiting
  • UNC Hospitals Dermatology and Skin Cancer Center at Southern Village
    Chapel Hill, North Carolina, United States
    Recruiting
  • Cleveland Clinic
    Cleveland, Ohio, United States
    Recruiting
  • Buckeye Dermatology - Springfield Office
    Springfield, Ohio, United States
    Recruiting
  • University of Oklahoma Health Sciences Center
    Oklahoma City, Oklahoma, United States
    Recruiting
  • Dermatology Health Specialists
    Bend, Oregon, United States
    Recruiting
  • Oregon Health & Science University
    Portland, Oregon, United States
    Recruiting
  • Penn State Hershey Medical Center
    Hershey, Pennsylvania, United States
    Recruiting
  • Penn Medicine, Perelman Center For Advanced Medicine
    Philadelphia, Pennsylvania, United States
    Recruiting
  • Clinical Research Center of the Carolinas
    Charleston, South Carolina, United States
    Recruiting
  • The University of Texas at Austin Dell Medical School Ascension Medical Group
    Austin, Texas, United States
    Recruiting
  • U.S. Dermatology Partners
    Cedar Park, Texas, United States
    Recruiting
  • Reveal Research Institute
    Dallas, Texas, United States
    Recruiting
  • The University of Texas MD Anderson Cancer Center
    Houston, Texas, United States
    Recruiting
  • Epiphany Dermatology
    Lewisville, Texas, United States
    Recruiting
  • Texas Dermatology and Laser Specialists
    San Antonio, Texas, United States
    Recruiting
  • Center for Clinical Studies at Webster Clear Lake
    Webster, Texas, United States
    Recruiting
  • University of Utah Hospital
    Salt Lake City, Utah, United States
    Recruiting
  • Vcu Massey Cancer Center
    Richmond, Virginia, United States
    Recruiting
  • The Skin Hospital
    Darlinghurst, New South Wales, Australia
    Recruiting
  • Westmead Hospital
    Westmead, New South Wales, Australia
    Recruiting
  • Princess Alexandra Hospital
    Woolloongabba, Queensland, Australia
    Recruiting
  • Dermatology Institute of Victoria (DIV)
    South Yarra, Victoria, Australia
    Recruiting
  • Fremantle Dermatology
    Fremantle, Western Australia, Australia
    Recruiting

+3 more sites. See ClinicalTrials.gov for the full list.

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.