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.
Quick facts
| Phase | Phase 3 |
|---|---|
| Study type | Interventional |
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 369 (estimated) |
| Sponsor | Regeneron Pharmaceuticals Industry-sponsored |
| Drugs / interventions | cemiplimab |
| Locations | 53 sites (Phoenix, Arizona and 52 other locations) |
| Status | Recruiting |
| Started | January 2, 2025 |
| Main results expected | May 3, 2030 |
| Study ends | May 3, 2030 |
| Registry record updated | September 16, 2026 |
| Trial ID | NCT06585410 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
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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
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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
- Study coordinator: Clinical Trials Administrator
- Email: clinicaltrials@regeneron.com
- Phone: 844-734-6643
Similar studies
Other studies for the same condition or treatment. Recruiting studies are listed first.
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Next‑generation immune profiling to find response and toxicity markers in skin cancer patients treated with cemiplimab
This project will test whether advanced blood and tumor immune profiling can help predict who with advanced cutaneous squamous cell carcinoma will benefit from cemiplimab and who may develop side effects.
-
Cemiplimab with Quad Shot Radiation for Head and Neck Cutaneous Squamous Cell Carcinoma
This study tests whether giving cemiplimab together with a short course of Quad Shot radiation can be safely delivered in several rounds to elderly or frail patients with head and neck skin cancer.
-
Seeing if the first lymph node helps detect skin cancer spread earlier
They are testing whether checking the sentinel lymph node early can help see if high-risk skin squamous cell cancer has started to spread.
-
Long-term real-world follow-up of adults with cutaneous squamous cell carcinoma needing systemic treatment in France
This study tests how adults with cutaneous squamous cell carcinoma who require systemic therapy are managed in real life, using a national French database across multiple centers.
-
First-in-human test of KUP-101A in selected advanced skin cancers
This early study tests KUP-101A to see if it's safe and tolerable and to gather initial clues about its activity in patients with advanced skin cancers.
-
REGN15505 Alone or With Cemiplimab or REGN4336 in Advanced Prostate Cancer and Kidney Cancer
This trial tests REGN15505 by itself or with cemiplimab or REGN4336 to see if it helps adults with metastatic castration-resistant prostate cancer or clear cell renal cell carcinoma.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.