marginally significantp = 0.027
In Mixed Ancestry individuals, who were successfully genotyped for both the GSTT1 and GSTT2B deletions, 13 of 414 controls (0.031) and 16 of 217 cases (0.074) were homozygous for both deletions (genotype Del-Del / Del-Del ), which was a marginally significant difference (p = 0.027).