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Table 1 Genotype distribution and allele frequencies of OCT-1 polymorphisms in responders and non-responders

From: Role of human organic cation transporter-1 (OCT-1/SLC22A1) in modulating the response to metformin in patients with type 2 diabetes

Genotype

Responder (n = 25)

Non-responder (n = 16)

P-value

OCT-1 (156 T > C)

 TT

15 (60.0%)

9 (56.0%)

 > 0.05

 TC

10 (40.0%)

7 (44.0%)

 

Alleles

 T

40 (80%)

25 (78.125%)

 > 0.05

 C

10 (20%)

7 (21.875%)

 

OCT-1 (181 C > T)

 CC

25 (100%)

6 (37.5%)

 < 0.001

 CT

0

10 (62.5%)

 

Alleles

 C

50 (100%)

22 (68.75%)

 < 0.001

 T

0 (0%)

10 (31.25%)

 

OCT-1 (1201 G > A)

 GG

25 (100%)

12(75.0%)

 < 0.05

 GA

0

4 (25%)

 

Alleles

 G

50 (100%)

28 (87.5%)

 < 0.05

 A

0 (0%)

4 (12.5%)

 

OCT-1 (1222A > G)

 AA

0

2 (12.5%)

 < 0.05

 AG

05 (20.0%)

9 (56.25%)

 

 GG

20 (80.0%)

5 (31.25%)

 

Alleles

 A

5 (10%)

13 (40.625%)

 < 0.05

 G

45 (90%)

19 (59.375%)