Table IX.

The degree of control of asthma according to the ACT in groups of patients with mild, moderate and severe levels of illness, against the frequency distribution of C−509T SNP genotypes.

	Severity of asthma
	Mild chronic			Moderate chronic			Severe chronic
Genotype	NK N (%)	CK N (%)	K N (%)	NK N (%)	CK N (%)	K N (%)	NK N (%)	CK N (%)	K N (%)
TT	6 (42.9)	1 (7.1)	0 (0.0)	20 (47.6)	9 (29.0)	3 (50.0)	21 (42.9)	4 (26.7)	0 (0.0)
CT	8 (57.1)	12 (85.7)	0 (0.0)	21 (50.0)	22 (71.0)	3 (50.0)	26 (53.1)	11 (73.3)	0 (0.0)
CC	0 (0.0)	1 (7.1)	0 (0.0)	1 (2.4)	0 (0.0)	0 (0.0)	2 (4.1)	0 (0.0)	1 (100)
N	14 (50.0)	14 (50.0)	0 (0.0)	42 (53.16)	31 (39.24)	6 (7.59)	49 (75.38)	15 (23.08)	1 (1.54)

NK, uncontrolled asthma (ACT <20 points); CK, partially controlled asthma (ACT =20–24 points); K, controlled asthma (ACT =25 points); N, number; %, percentage; ACT, asthma control test.