Clinical trial · Observational
Analysis of Melanocytes (Pigment Cells) in Sun-Exposed Skin
Immunohistochemical Analysis of Melanocytes in Sun-Exposed Skin
- Source
- ClinicalTrials.gov
- Retrieved
- Sep 8, 2026
- Layer
- normalized (units and labels harmonized; values unchanged)
- Run
- ING-CLINICALTRIALS-20260908-000001
Summary
Brief summary (as posted)
The purpose of this study is to estimate and define the mean number, degree of confluence, and depth of penetration of melanocytes in chronically sun exposed skin of the head and neck using Mart-1 immunostains on frozen sections. The study was conducted to confirm whether similar results were found using permanent sections. The present study used hematoxaline and eosin (H\&E) staining as well as Mart-1 staining, and included patients from both Mayo Clinic Jacksonville and Rochester.
Conditions
Conditions (2)
Free-text conditions as registered, with the CancerIndex entity they were reconciled to and the match type.
| Condition (as posted) | Mapped entity | Match | Confidence |
|---|---|---|---|
| Carcinoma, Basal Cell | Basal Cell Carcinoma | ONTOLOGY_EXACT | 0.90 |
| Carcinoma, Squamous Cell | Squamous Cell Carcinoma | ONTOLOGY_EXACT | 0.98 |
Interventions
Interventions (0)
Data not yet available
Design
Arms and outcomes
Arms (0)
[]Primary outcomes (1)
- measure
- The mean number of melanocytes per high power field for Mart-1 was 12.7 in FL and 11.2 in MN. Using H&E, the means were 10.3 and 8.3 for FL and MN respectively.
- timeFrame
- one year
Secondary outcomes (1)
- measure
- Evidence of higher means in FL than in MN after adjusting for age and gender (p<0.001 for H&E, p=0.08 for Mart-1) and strong evidence of an increase in observed numbers of melanocytes with use of the Mart-1 stain compared to the H&E stain (p<0.001)
- timeFrame
- one year
Eligibility
Eligibility (as posted)
- Sex
- All
- Minimum age
- 18 Years
Show eligibility criteria text
Inclusion Criteria: * Participants undergoing Mohs and reconstructive surgery for basal cell and squamous cell carcinoma of the face and neck Exclusion Criteria: * Participants with a history of radiation to the head and neck were excluded.
References
Publications (0)
Data not yet available