It is also very remarkable that patients with IgE only against “Species Specific” allergenic molecules of Pp did not have IgE vs Bet v 2 (another profilin, tested on 44 patients of SS group), while IgE against Bet v 2 were found in 83% (25 patients on 30, in which the profilin was tested) of SSCR group, with statistical significance (χ2 = 55.4, Yates’ χ2 = 51.7, p < 0.01). Here, IGHE is linked to synovial sarcoma.