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Table 1 Allellic frequencies of CTLA-4 49A/G polymorphism among patient controls

From: CTLA-4+49A/G and CT60 gene polymorphisms in primary Sjögren syndrome

CTLA-4+49A/G

Allele frequencies

p

Odds ratio (95% CI)

 

pSS

SSA+ and SSB+

SSA+ only

Ac+

Ac0

Controls (n = 241)

  

Cohort 1

n = 142

n = 47

n = 43

n = 90

n = 52

  

pSS vs controls

   A (Thr)

208 (73)

68 (72)

61 (71)

129 (72)

79 (76)

318 (66)

0.036

1.41 (1.02–1.95)

   G (Ala)

76 (27)

26 (28)

25 (29)

51 (28)

25 (24)

164 (34)

0.036

0.70 (0.51–0.98)

Cohort 2

n = 139

n = 52

n = 49

n = 101

n = 38

Controls (n = 241)

  

   A (Thr)

173 (62)

59 (57)

66 (67)

125 (62)

48 (63)

318 (66)

NS

0.85 (0.62–1.15)

   G (Ala)

105 (38)

45 (43)

32 (33)

77 (38)

28 (37)

164 (34)

NS

1.17 (0.86–1.60)

Total

n = 281

n = 99

n = 92

n = 191

n = 90

Controls (n = 241)

  

   A (Thr)

381 (68)

127 (64)

127 (69)

254 (66)

127 (71)

318 (66)

NS

1.08 (0.84–1.40)

   G (Ala)

181 (32)

71 (36)

57 (31)

128 (34)

53 (29)

164 (34)

NS

0.92 (0.71–1.19)

  1. Numbers in parentheses are percentages. pSS, primary Sjögren syndrome; Ac+, presence of anti SSB and/or anti-SSA; Ac0, absence of anti-SSA or anti-SSB antibody; CI, confidence interval; NS, not significant.