Observed allele and genotype frequencies of the −13910 C>T polymorphism in four Brazilian populations.

n = number of individuals; the genotypes are at Hardy-Weinberg equilibrium.
aSouthern Brazil.
bNorthern Brazil.
cNortheastern Brazil.
Frequencies in bold are lower than the frequency observed in individuals with European ancestry from Porto Alegre. Heterogeneity Chi-square test: p = 1.7×10−5).
Results from Chi-square test partition according to Everrit [50].
p = 2×10−4 for the comparison between individuals from European and African ancestries from Porto Alegre.
p = 2.2×10−5 for the comparison between population from Belém and from Porto Alegre with European ancestry.
p = 0.001 for the comparison between population from Recife and from Porto Alegre with European ancestry.