Table 1.

The carrier frequency of the c.1528G>C mutation in different countries

Population	No. of investigated individuals/carriers	Carrier frequency of c.1528G>C mutation	References
Finland	1200/5	1:240	Tyni and Pihko (1999)
The Netherlands	2047/3	1:680	den Boer et al. (2000)
Poland (whole country)	4137/22	1:189	Piekutowska-Abramczuk et al. (2010)
Poland (Pomerania)	2976/41	1:73	Piekutowska-Abramczuk et al. (2010)
China	1200/0	0	Zhu et al. (2005)
Estonia	1040/6	1:173	This study