UGT1A1 and Gilbert syndrome: The [TA]6/7 genotype appears to contribute as a blocker of diet-induced gene transcription but does not correlate to Gilbert's syndrome, whereas the [TA]7/7 genotype does not appear to play a role in diet-induced antioxidative UGT1A1 transcription but in the prevalence for Gilbert’s syndrome (Monaghan et al., 1996).