Association of Caspase-8 Genotypes With the Risk for Nasopharyngeal Carcinoma in Taiwan.

Background/aim Accumulating evidence shows that caspase-8 (Cas-8) rs3834129 genotypes determine susceptibility to various cancers, but their association with nasopharyngeal carcinoma (NPC) has not been examined. We aimed at investigating the association of Cas-8 rs3834129 with NPC risk. Materials and methods Cas-8 rs3834129 genotypes and their associations with NPC risk were investigated among 176 NPC patients and 352 non-cancer subjects by the PCR-RFLP method. Additionally, the interaction of Cas-8 rs3834129 genotypes with smoking was examined. Results The II, ID and DD frequencies were 56.8, 36.9 and 6.3% among NPC patients and 54.8, 38.1 and 7.1% among control subjects (ptrend=0.8830). Allelic frequency distribution analysis also indicated that the D allele is not a risk factor for NPC (p=0.6183). There was no interaction between Cas-8 rs3834129 and smoking and NPC risk (p=0.8305). Conclusion Cas-8 rs3834129 genotypes play a minor role in the risk for NPC.