From: Frequencies of CYP2C9 polymorphisms in North Indian population and their association with drug levels in children on phenytoin monotherapy
CYP2C9*2 genotypes
Number (n = 89)
Prevalence (%)
95 % CI
CC
81
91
83–96
CT
8
9
3–16
Alleles
No of Alleles
Frequency
C
170
95.5
91–98
T
4.5
1.9–8