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Table 2 Allele frequencies of the CTD and control groups

From: Genetic variation in folate metabolism is associated with the risk of conotruncal heart defects in a Chinese population

Genotyped SNPs

Controls (n = 234)

CTD (N = 193)

p-Value for HWE test

% (No.)

% (No.)

MTHFR C677T (rs1801133)

 C

61.1(286)

51.3(198)

0.004*

 T

38.9(182)

48.7(188)

MTHFR A1298C (rs1801131)

 A

61.3(287)

47.9(185)

< 0.001*

 C

38.7(181)

52.1(201)

SLC19A1 G80A (rs1051266)

 G

59.8(280)

53.1(205)

0.0485*

 A

40.2(188)

46.9(181)

MTR A2576G (rs1805087)

 A

41.5(194)

61.9(239)

0.7862

 G

58.5(174)

38.1(147)

MTRR A66G (rs1801394)

 A

56.8(266)

60.6(234)

0.2639

 G

43.2(202)

39.4(152)

  1. HWE Hardy-Weinberg equilibrium
  2. *means p-value< 0.05