Understanding immune changes in basal cell carcinoma after light therapy

Alteration of the Immune Microenvironment in Basal Cell Carcinoma (BCC) Following Photodynamic Therapy (PDT)

Phase 2 Interventional Case Comprehensive Cancer Center · NCT05020912

This study is testing how light therapy affects the immune system in patients with basal cell carcinoma who are about to have surgery, by comparing treated and untreated tumors.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment28 (estimated)
Ages18 Years and up
SexAll
SponsorCase Comprehensive Cancer Center Academic / other
Drugs / interventionsradiation
Locations1 site (Cleveland, Ohio)
Trial IDNCT05020912 on ClinicalTrials.gov

What this trial studies

This study investigates how Photodynamic Therapy (PDT) affects the immune response in patients with basal cell carcinoma (BCC) who are scheduled for Mohs surgery. Participants will have one tumor treated with PDT and another left untreated to compare immune responses. The study aims to measure immune checkpoint molecules and the ratio of different T cell types in the tumors, as well as analyze circulating T-cells before and after treatment. The goal is to enhance understanding of PDT's potential to improve tumor clearance by altering the immune microenvironment.

Who should consider this trial

Good fit: Ideal candidates are adults with biopsy-proven basal cell carcinoma who are scheduled for Mohs surgery.

Not a fit: Patients who are pregnant, breastfeeding, or currently undergoing treatment for other cancers may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to improved treatment strategies for basal cell carcinoma by harnessing the immune response.

How similar studies have performed: While PDT is not FDA-approved for BCC in the U.S., it has shown promise in European studies, suggesting potential for success in this approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Adults scheduled to undergo Mohs surgery within the Dermatologic Surgery unit of the Department of Dermatology, Cleveland Clinic
* Must have at least one BCC tumor eligible for removal by surgical excision
* Men and women of any ethnic group are eligible
* Must provide informed consent to participate

Exclusion Criteria:

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

Where this trial is running

Cleveland, Ohio

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Basal Cell Carcinoma
Last reviewed 2026-06-15 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.