Allele Designation Nucleotide Change Mutation Effect Predicted Enzyme Activity
*2 c.681 G>A Splicing defect Non-functional
*3 c.636 G>A New stop codon Non-functional
*17 c.991A>G Increased gene transcription Increased function
Note:  The genotype reported as "no allelic variants" is suggestive of *1 alleles.
Table 2: Allelic variants tested for CYP2C19 gene.