Table 3. Geographical polymorphism in the Der p 1 allergen.

Locality and DNA template	Most frequently reported mutation sites				Other sporadic mutation sites	Reference
	Y50	V124	T136	Q215
Pakistan genomic	-	V/A	S	E	None	This study
USA genomic	Y/H	A	-	-	None	This study
UK genomic	-	A	S	n.r.	None	Kent et al., 1992
Sydney genomic	-	V/A	S/T	E	None	Smith et al., 2001
Melbourne cDNA	H/Y	V/A	S/T	E/Q	1	Chua et al., 1993
Perth cDNA	-	V/A	S	E/K	6	Smith et al., 2001
Bangkok cDNA	H/Y	A/V	S	E/G	9	Piboonpocanun et al., 2006
Korea cDNA	Y/H	V/A	S	E	20	Jeong et al., 2012

Superscript on amino acid symbol indicates the position in polypeptide (N.R.: not reported; “a.a/a.a”: higher frequency/lower frequency reported; “-”: no mutation