Allelic association results among different comparison groups.

aMAF: Minor Allele Frequency of reference population is listed;bAssociation tests abbreviations, CC: case (jointly oral cancer and leukoplakia) vs. control, CAC: cancer vs. control, CAL: cancer vs. leukoplakia and LC: leukoplakia vs. control;cP-values without any adjustment for age, sex and tobacco habits by logistic regression and without any multiple tests correction applied,dP-values without any adjustment for age, sex and tobacco habits by logistic regression but corrected for multiple testing by Benjamini-Hochberg False Discovery Rate method,eP-values after adjustment for age, sex and tobacco habits by logistic regression but no correction multiple testing was applied,fP-values after adjustment for age, sex and tobacco habits by logistic regression and corrected for multiple testing by Benjamini-Hochberg False Discovery Rate method.