Table 2

Specific IgE binding, stratified by the results of skin-prick testing, to extracts of wild-type and GM potatoes.

A/H ratio
Wild-type potato
GM potato





2+
3+
4+
5+
6+
2+
3+
4+
5+
6+

Skin-prick test result n (%)
38 (35.2)
48 (44.5)
12 (11.1)
7 (6.4)
3 (2.8)
36 (33.3)
51 (47.2)
13 (12)
6 (5.6)
2 (1.9)
sIgE (%) to
Wild
13/23 (57)
18/28 (64)
5/8 (63)
2/4 (50)
0/2 (0)
8/19 (42)
17/31 (55)
6/8 (75)
1/5 (20)
0/2 (0)

GM
10/23 (44)
16/28 (57)
5/8 (63)
1/4 (25)
0/2 (0)
11/19 (58)
18/31 (58)
7/8 (88)
3/5 (60)
1/2 (50)

Positive skin-prick test response (≥2+): 108/1886 for wild-type and genetically modified (GM) potato. A/H ratio: the ratio of the size of the wheal induced by allergen on allergic skin-prick test to that induced by histamine; N: number of subjects positive to skin-prick test for wild-type and GM potato; sIgE: prevalence of serum specific IgE antibody to wild-type and GM potato (number of subjects with positive serum specific IgE/number of subjects tested in each response group according to the skin-prick test using potato extract).

Lee et al. Clinical and Molecular Allergy 2006 4:10   doi:10.1186/1476-7961-4-10