“…In one study, the few patients monosensitized to profilin did not report any relevant symptom following the ingestion of plant-derived foods [41], and another one concluded that IgE cross-reactive against food profilins has no or very little clinical relevance [43]; on the other hand, profilin has been involved in the so-called ‘birch-mugwort-celery-spice’ syndrome and in adverse reactions to Apiaceae [44,45,46,47], hazelnut [11], Rosaceae [14, 48], tomato [49], pumpkin seed [50], zucchini [51], lychee [52], pineapple and banana [53], persimmon [54] and melon [55]. Altogether, these studies suggest that probably only a limited proportion of subjects sensitized to profilin develop clinical allergy.…”