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Table 1 Genotype distributions of included case-control studies

From: Pooling analysis regarding the impact of human vitamin D receptor variants on the odds of psoriasis

First author

Year

Ethnicity

case

polymorphism

Control

Source of controls

P HWE

Genotyping method

XX

XY

YY

XX

XY

YY

Dayangac

2007

Caucasian

12

29

10

rs7975232

30

55

15

PB

0.21

PCR-RFLP

Kaya

2002

Caucasian

14

31

8

rs7975232

27

21

6

PB

0.54

PCR-RFLP

Lee

2002

Asian

5

28

22

rs7975232

3

29

72

PB

0.97

PCR-RFLP

Liu

2017

Asian

39

56

15

rs7975232

100

67

16

PB

0.33

LDR

Okita

2002

Asian

4

19

27

rs7975232

9

41

36

PB

0.59

PCR-RFLP

Park

1999

Asian

10

46

48

rs7975232

3

29

72

PB

0.97

PCR-RFLP

Richetta

2014

Caucasian

37

50

21

rs7975232

88

136

44

PB

0.48

Taqman assay

Rucevic

2012

Caucasian

48

99

33

rs7975232

110

193

63

PB

0.17

PCR-RFLP

Saeki

2002

Asian

9

46

60

rs7975232

10

26

33

PB

0.21

PCR-RFLP

Zhao

2015

Asian

159

148

17

rs7975232

92

54

12

PB

0.31

gene sequencing

Zhou

2014

Asian

182

130

30

rs7975232

209

113

19

HB

0.47

Multiplex SNapSHOT

Zhu

2002

Asian

22

30

60

rs7975232

8

48

52

PB

0.49

PCR-RFLP

Zuel

2011

African

23

24

3

rs7975232

18

30

2

PB

0.02

PCR-RFLP

Kaya

2002

Caucasian

10

25

18

rs1544410

11

22

21

PB

0.25

PCR-RFLP

Kontula

1997

Caucasian

2

12

5

rs1544410

10

29

36

PB

0.29

PCR-RFLP

Lee

2002

Asian

1

3

51

rs1544410

0

13

88

PB

0.49

PCR-RFLP

Liu

2017

Asian

97

11

2

rs1544410

163

18

2

PB

0.08

LDR

Mee

1998

Caucasian

78a

106a

 

rs1544410

114a

134a

 

NA

> 0.05

PCR-RFLP

Okita

2002

Asian

3

7

40

rs1544410

4

12

70

PB

0.00

PCR-RFLP

Richetta

2014

Caucasian

42

42

24

rs1544410

87

124

57

PB

0.30

Taqman assay

Rucevic

2012

Caucasian

19

94

67

rs1544410

68

175

123

PB

0.68

PCR-RFLP

Ruggiero

2004

Caucasian

17

28

15

rs1544410

18

32

18

PB

0.63

PCR-RFLP

Saeki

2002

Asian

4

12

99

rs1544410

8

10

51

PB

0.00

PCR-RFLP

Zhao

2015

Asian

306

17

1

rs1544410

142

16

0

PB

0.50

gene sequencing

Zhou

2014

Asian

311

29

2

rs1544410

321

19

1

HB

0.22

Multiplex SNapSHOT

Zhu

2002

Asian

0

36

76

rs1544410

0

16

92

PB

0.41

PCR-RFLP

Dayangac

2007

Caucasian

28

20

3

rs2228570

55

36

9

PB

0.39

PCR-RFLP

Halsall

2005

Caucasian

250a

160a

 

rs2228570

102a

58a

 

HB

> 0.05

PCR-RFLP

Kaya

2002

Caucasian

24

23

6

rs2228570

29

22

3

PB

0.66

PCR-RFLP

Liu

2017

Asian

25

61

24

rs2228570

50

97

36

PB

0.37

LDR

Richetta

2014

Caucasian

41

49

18

rs2228570

117

114

37

PB

0.28

Taqman assay

Saeki

2002

Asian

37

55

23

rs2228570

29

31

9

PB

0.87

PCR-RFLP

Zhao

2015

Asian

118

150

56

rs2228570

25

68

65

PB

0.31

gene sequencing

Zhou

2014

Asian

94

180

68

rs2228570

99

171

71

HB

0.86

Multiplex SNapSHOT

Acikbas

2012

Caucasian

14

47

41

rs731236

27

33

42

PB

< 0.05

PCR-RFLP

Dayangac

2007

Caucasian

26

23

2

rs731236

35

49

16

PB

0.87

PCR-RFLP

Halsall

2005

Caucasian

262a

148a

 

rs731236

90a

70a

 

HB

> 0.05

PCR-RFLP

Kaya

2002

Caucasian

19

25

9

rs731236

22

24

8

PB

0.73

PCR-RFLP

Liu

2017

Asian

101

9

0

rs731236

171

12

0

PB

0.65

LDR

Okita

2002

Asian

39

11

0

rs731236

72

14

0

PB

0.41

PCR-RFLP

Richetta

2014

Caucasian

42

44

22

rs731236

89

131

48

PB

0.99

Taqman assay

Rucevic

2012

Caucasian

79

82

19

rs731236

139

175

52

PB

0.80

PCR-RFLP

Saeki

2002

Asian

100

14

1

rs731236

51

16

2

PB

0.59

PCR-RFLP

Zhao

2015

Asian

283

37

4

rs731236

129

27

2

PB

0.67

gene sequencing

Zhou

2014

Asian

308

33

1

rs731236

315

26

0

HB

0.46

Multiplex SNapSHOT

Zuel

2011

African

16

25

9

rs731236

19

26

5

PB

0.36

PCR-RFLP

  1. X major allele, Y minor allele, PB population-based controls, HB hospital-based controls, NA not available data, PCR-RFLP polymerase chain reaction-restriction fragment length polymorphism, PHWE P-value of Hardy-Weinberg equilibrium, LDR ligase detection reactions
  2. a The frequency of major allele and minor allele