Risk Factors in Normal-Tension Glaucoma and High-Tension Glaucoma in relation to Polymorphisms of Endothelin-1 Gene and Endothelin-1 Receptor Type A Gene

Table 4

Frequency of allelic variants of polymorphisms of ET and EDN RA gene in NTG and HTG patients.

Patients (%)	K198N			C1222T			C70G			G231A
	GG	TT	GT	CC	TT	CT	CC	GG	CG	GG	AA	GA
NTG	107 (66.9%)	7 (4.4%)	46 (28.7%)	56 (35%)	25 (15.6%)	79 (49.4%)	27 (16.9%)	44 (27.5%)	89 (55.6%)	83 (51.9%)	6 (3.8%)	71 (44.4%)
HTG	91 (73.4%)	4 (3.2%)	29 (23.3%)	44 (35.5%)	16 (12.9%)	64 (51.6%)	21 (16.9%)	36 (29%)	67 (54%)	65 (52.4%)	5 (4%)	54 (43.5%)