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Table 3 Comparison of CYP2C9*1 and *2 alleles as well as CYP2C19 alleles in various study groups

From: Genetic abnormality of cytochrome-P2C9*3 allele predisposes to epilepsy and phenytoin-induced adverse drug reactions: genotyping findings of cytochrome-alleles in the North Indian population

CYP2C9*1 VERSUS CYP2C9*2

Genotypes

Phenytoin-induced dose-related ADRs (n = 66)

Number of patients (%age)

No ADR (Group 2)

(n = 100)

Number of patients (%age)

p value

CYP2C9*1/*1

54 (81.81%)

87 (87%)

1*/2* versus 1*/1*

p = 0.53

2*/2* versus 1*/1* p = 0.51

CYP2C9*1/*2

7 (10.60%)

8 (8%)

CYP2C9*2/*2

5 (7.57%)

5 (5%)

CYP2C19*1 VERSUS CYP2C19*2

Genotypes

Phenytoin-induced dose-related ADRs (n = 66)

Number of patients (%age)

No ADR (n = 100) (Group 2)

Number of patients (%age)

p

CYP2C9*1/*1

44 (66.66%)

68 (68%)

1*2* versus 1*/1*

p = 0.84

2*/2* versus 1*/1* p = 1

CYP2C9*1/*2

16 (24.24%)

23 (23%)

CYP2C9*2/*2

6 (9.09%)

9 (9%)

CYP2C19*1 VERSUS CYP2C19*3

 

Phenytoin-induced dose-related ADRs (n = 66)

Number of patients (%age)

No ADR (n = 100) (Group 2)

Number of patients (%age)

p

CYP2C19*1/*1

66 (100%)

100 (100%)

1

CYP2C19*1/*3

0 (0%)

0 (0%)

CYP2C19*3/*3

0 (0%)

0 (0%)

  1. Bold values are significant when p-value is < 0.05