RASSF1 and neoplasm: The adjusted multivariate logistic regression analysis identified methylation of the MGMT2 locus (OR, 1.48; 95% CI, 1.10 to 1.97; p = 0.008) and RASSF1A gene (OR, 2.04; 95% CI, 1.01 to 4.13; p = 0.047) as variables independently associated with tumor multiplicity.