Table 4.

Allele and genotype frequency comparisons between ethnicities

SNP	Population	N	Allele frequency		Genotype frequency			Reference
			C	T	CC	CT	TT
1236C>T	Ashkenazi	101	0.58	0.42	0.40	0.37	0.24	This study
	Caucasian	188	0.62	0.38	0.38	0.49	0.13	[9]
	Caucasian	31	0.53	0.47	0.32	0.42	0.26	NCBI
	Chinese	45	0.31	0.69	0.11	0.40	0.49	NCBI
	African American	24	0.81	0.19	0.63	0.37	0.00	NCBI
			G	T	GG	GT	TT
2677G>T	Ashkenazi	101	0.59	0.41	0.36	0.48	0.17	This study
	Caucasian	31	0.57	0.43	0.32	0.48	0.19	NCBI
	African American	24	0.85	0.11	0.75	0.21	0.00	NCBI
	Asian	44	0.50	0.50	0.32	0.36	0.32	NCBI
			C	T	CC	CT	TT
3435C>T	Ashkenazi	101	0.50	0.50	0.31	0.39	0.31	This study
	Caucasian	188	0.52	0.48	0.28	0.48	0.24	[9]
	African American	88	0.84	0.16	0.68	0.31	0.01	[55]
	Chinese	265	0.56	0.44	0.32	0.48	0.20	[56]