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Table 5 Results of Global Linkage Disequilibrium (GLD) significance test (PRS resampling procedure) between different pairs of MHC loci in chimpanzees (BPRC cohort) and humans (multiple populations, further subdivided into RGD and SGD populations)

From: Similar patterns of genetic diversity and linkage disequilibrium in Western chimpanzees (Pan troglodytes verus) and humans indicate highly conserved mechanisms of MHC molecular evolution

 

Chimpanzees

Humans

BPRCWB

Multiple populations

RGD

SGD

Loci pairs

N

p

k

% significant results (after correction)

k1

% significant results (after correction)

k2

% significant results (after correction)

DPB1 ~ DQB1

25

0.106

40

30 (12.5)

15

47 (27)

25

24 (4)

DPB1 ~ DQA1

25

0.0697

33

27.3 (15.1)

16

44 (25)

17

12 (5.9)

DPB1 ~ DRB1

25

0.328

31

25.8 (9.7)

16

37 (12.5)

15

13 (6.7)

DPB1 ~ B

25

1

10

10 (10)

4

25 (25)

6

0

DPB1 ~ C

25

0.999

8

12.5 (0)

2

50 (0)

6

0

DPB1 ~ A

24

0.982

12

0

5

0

7

0

DQB1 ~ DQA1

29

<  10−4

46

97.8 (97.8)

20

95 (95)

26

100 (100)

DQB1 ~ DRB1

29

<  10−4

51

94.1 (94.1)

23

96 (96)

28

93 (93)

DQB1 ~ B

29

1

13

61.5 (53.8)

7

86 (86)

6

33 (16.7)

DQB1 ~ C

29

0.975

10

40 (40)

5

60 (60)

5

20 (20)

DQB1 ~ A

28

0.98

16

12.5 (12.5)

9

22 (22)

7

0

DQA1 ~ DRB1

29

<  10−4

38

97.4 (97.4)

21

100 (100)

17

94 (94)

DQA1 ~ B

29

1

9

44.4 (44.4)

5

80 (80)

4

0

DQA1 ~ C

29

1

6

33.3 (33.3)

3

67 (67)

3

0

DQA1 ~ A

28

0.831

12

8.3 (0)

7

14 (0)

5

0

DRB1 ~ B

29

1

39

51.3 (35.9)

22

73 (54.5)

17

23 (11.8)

DRB1 ~ C

29

0.998

30

63.3 (63.3)

18

78 (78)

12

42 (42)

DRB1 ~ A

28

0.991

39

28.2 (25.6)

24

33 (33)

15

20 (13.3)

B ~ C

29

0.0001

59

74.6 (74.6)

21

95 (95)

38

63 (63)

B ~ A

28

0.931

76

35.5 (25)

27

63 (40.7)

49

20 (16.3)

C ~ A

28

0.892

58

53.4 (37.9)

23

65 (47.8)

35

46 (31.4)

  1. The PRS resampling procedure was done with 10′000 simulations for the chimpanzee cohorts (significant results are in bold). The PRS resampling procedure was done with 1′000 simulations in each human population, and the table reports the percentage of significant results for each pair of loci (in brackets after Holm correction for multiple testing). Pairs in significant global linkage disequilibrium in more than 70% of human populations are in bold. N: number of chimpanzee individuals; p: p-value; k: total number of human populations; k1: number of RGD populations; k2: number of SGD populations. The table includes results obtained for the BPRCwb cohort, i.e. the cohort including the greatest number of animals and the only one for which all loci were tested. Results for the other cohorts are in Additional Table S5