Parameters

Age of presentation “months”

mean ± SD

number of crisis/year

mean ± SD

HB F%

mean ± SD

HB S%

mean ± SD

rs 9376090

TT

21.6 ± 18

3.6 ± 1.9

8.4 ± 6.5

68.3 ± 18.4

CT

16.8 ± 12

2.7 ± 1.03

7.1 ± 5.6

54.4 ± 22.6

CC

36

2.0

1.5

47.0

P value

0.35

0.03 *

0.583

0. 031*

rs 4895441

AA

21.6 ± 13

4.1 ± 2.2

4.7 ± 5.0

63.7 ± 24.8

AG

32.4 ± 19

1.8 ± 0.98

9.4 ± 6.04

47.8 ± 23.4

P value

0.02 *

0.001 *

0. 013 *

0. 022 *