Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Vitamin D and light therapy to boost skin cancer response before surgery

Official title: Vitamin D Effects on Immune Microenvironment of Nonmelanoma Skin Cancer After Photodynamic Therapy (PDT)

Run by Case Comprehensive Cancer Center · NCT07241585 · Data updated 2026-11-12

This study tests whether giving Vitamin D or a placebo around the time of a light-based treatment (PDT) can help boost skin cancer treatment before Mohs surgery or ED&C in adults with basal cell or squamous cell carcinoma.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment54 (estimated)
SponsorCase Comprehensive Cancer Center
Academic / other
Drugs / interventionsradiation
Locations1 site (Cleveland, Ohio)
StatusRecruiting
StartedFebruary 25, 2026
Main results expectedMarch 2027
Study endsAugust 2027
Registry record updatedAugust 18, 2026
Trial IDNCT07241585 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults aged 18 or older with at least one basal cell carcinoma or squamous cell carcinoma suitable for Mohs surgery or ED&C, and who plan to have the procedure in Cleveland, Ohio.

Probably not a fit

Patients whose tumors do not respond to PDT or who do not receive the pre-treatment PDT may not experience a benefit from the study intervention.

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

What this trial studies

This interventional study investigates whether pre-treatment with Vitamin D, with or without photodynamic therapy (PDT), enhances the immune response against nonmelanoma skin cancers in adults scheduled for Mohs surgery or ED&C. Participants are randomized to receive Vitamin D or placebo for six days and then undergo PDT within 1–14 days before surgery, with photographs and optional blood draws collected for research. Some participants may opt to proceed with surgery or ED&C without the PDT pre-treatment. The study explores the potential for PDT plus Vitamin D to improve tumor clearance and reduce visible scarring, addressing a gap in the approval and optimization of PDT for thicker skin cancers in the U.S.

Why it matters

Potential benefit: If successful, the approach could improve tumor clearance and potentially reduce scarring for patients undergoing treatment of nonmelanoma skin cancers.

How similar studies have gone: Previous laboratory work suggests Vitamin D can enhance PDT effects, but human data in NMSC are limited and this trial tests this approach in a clinical setting.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Must be an adult participant (\> 18 yrs) who is scheduled to undergo Mohs surgery or ED\&C within the Dermatologic Surgery unit of the Department of Dermatology, Cleveland Clinic.
* Must have at least one BCC or SCC tumor eligible for removal by Mohs surgery.
* The original tumor size prior to biopsy must be \>1.0 cm (in the longest diameter).
* Participants of any ethnic group are eligible for this trial.
* Must provide informed consent to participate in the trial.
* Participant must live in Ohio (Groups 2 \& 3), because Research Pharmacy cannot ship the study drugs outside of the state.

Exclusion Criteria:

* Pregnant or breastfeeding
* Currently being treated for other cancers with medical or radiation therapy
* Known hypersensitivity to 5-aminolevulinic acid
* History of a photosensitivity disease, e.g., porphyria cutanea tarda

Where it's running

  • Case Comprehensive Cancer Center, Cleveland Clinic Foundation Taussig Cancer Institute
    Cleveland, Ohio, United States
    Recruiting

Study contacts

  • Principal investigator: Edward Maytin, MD, PhD — Case Comprehensive Cancer Center, Cleveland Clinic
  • Study coordinator: Edward Maytin, MD, PhD
  • Email: maytine@ccf.org
  • Phone: (216) 346-6022

Similar studies

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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.