Table I.
Dihydropyrimidine dehydrogenase immunohistochemistry intensity score in patient samples (n = 60)
| DPD IHC intensity score |
||||
|---|---|---|---|---|
| 0 | 1 | 2 | 3 | |
| Seborrheic keratosis | 0 | 4 | 2 | 2 |
| Actinic keratosis | 1 | 9 | 6 | 0 |
| SCC in situ | 0 | 4 | 4 | 2 |
| Basal cell carcinoma | 21 | 4 | 1 | 0 |
Basal cell carcinoma includes both superficial and nodular subtypes. DPD IHC intensity was scored from 0 to 3 (0: no expression, 1: weak expression, 2: moderate expression, 3: strong expression). Fisher’s exact test P value = 3.95 × 10−9.
DPD, Dihydropyrimidine dehydrogenase; IHC, immunohistochemistry; SCC, squamous cell carcinoma.