Genotypic and allelic frequencies of the VNTR polymorphism in the IDO1 promoter.

aThe genotype and allele frequencies for the 41 DNA samples obtained from unrelated healthy Caucasian volunteers were calculated based on a sequencing approach, as described in the Material and Methods section.bThe genotype and allele frequencies for the 300 DNA samples obtained from the Haguenau cohort were calculated based on a PCR-based genotyping strategy, as described in the Material and Methods section.