Modulation of risk of squamous cell carcinoma head and neck in North Indian population with polymorphisms in xeroderma pigmentosum complementation Group C gene

Suresh Kumar Yadav, Sudhir Singh, Shalini Gupta, Madan Lal Brahma Bhatt, Durga P Mishra, D Roy, Somali Sanyal
Journal of Cancer Research and Therapeutics 2018, 14 (3): 651-657

Background: Genetic variations in nucleotide excision repair genes can alter the risk of squamous cell carcinoma of head and neck (SCCHN).

Materials and Methods: The present study has genotyped 334 subjects from North Indian population for xeroderma pigmentosum complementation Group C (XPC) rs2228001A>C, XPC rs77907221 polyadenylate (PAT) deletion/insertion (D/I), xeroderma pigmentosum complementation Group D - rs13181A>C, and xeroderma pigmentosum complementation Type G rs17655 G>C polymorphisms with polymerase chain reaction (PCR)-restriction-fragment length polymorphism or allele-specific PCR methods.

Results: Compared to D allele, I allele for XPC PAT D/I polymorphism was associated with significantly decreased the risk of SCCHN (odds ratios = 0.67, 95% confidence interval [CI] =0.48-0.94, P = 0.03). Haplotype CI constituted from XPC polymorphisms was also associated with decreased risk of SCCHN (P = 0.004). In contrast, haplotype Crohn's disease significantly increased the risk for SCCHN (P < 0.00). A significant early onset of SCCHN was observed in individuals with CC genotype for XPC A>C polymorphism (P = 0.004).

Conclusion: Our results suggest a possible risk modulation for SCCHN with XPC polymorphisms in North Indian population.

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