They studied the effect of three nonsynonymous variants in this gene on PTC taste sensitivity. The “taster” haplotype for positions 49, 262, and 296 is “PAV”, the “nontaster” haplotype is “AVI” — thus, this variant is associated with the PTC taster group. Individuals carrying at least one copy of “PAV” were overwhelmingly likely to be “taster” (98%).