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Molecular diagnosis using recombinants or purified allergens can partially solve this problem and improve the diagnosis of allergy [3]. In this study, we found that in 54% of patients, there was a disagreement in indication of SIT before and after ISAC? results. With regard to the extracts used for immunotherapy, the �� agreement coefficient varied from 1 for olive and cypress to see more weak from a clinical point of view. The most common indication of SIT was an extract of grass pollen: in this case, �� coefficient was only 0.11. When analyzing concordance of SPT results with recombinants of purified allergens from the ISAC? test, we also found disagreement levels that varied from 40% with plane extract and positivity to Pla a1 and/or Pla a2 to 16% with grass extract and positive reaction to Phl p1 and/or Phl p 5. This fact may be responsible for the high percentage of disagreement found when SIT was prescribed only on the basis of SPT results. This can be explained by false-negative results of SPT used in single application even when performed by skilled technicians and by technical problems in patients with low skin sensitivity [5, 6]. However, lazabemide it is also possible to find cases of false-positive and false-negative results when performing specific IgE to recombinants or purified allergens [7]. Another factor that had a substantial influence and led to disagreement was the presence of sensitization to DAPT mouse cross-reactive components such as profilin or polcalcin. In summary, very low agreement was found concerning indication and use of allergens for SIT before and after performing MD. This great discrepancy makes the case for the usefulness of MD, at least in areas of complex sensitization to pollen, as a means of facilitating accurate prescription of pollen immunotherapy. We thank Oliver Shaw for editorial assistance. This study was funded by CIBERES (CIBER de Enfermedades Respiratorias), Instituto de Salud Carlos III of the Ministry of Science and Innovation, Spain. Dr. Land��var, Dr. Ruiz-Garcia, Dr. Andregnette-Roscigno, and Dr Mahillo have no conflicts to disclose. Dr. Sastre reports having served as a consultant to Phadia, MSD, Novartis; FAES Farma and GSK, having been paid lecture fees by Novartis, GSK, Stallergenes, UCB and having received grant support from Phadia, GSK and ALK-Abello. ""To cite this article: Ebisawa M, Mov�rare R, Sato S, Maruyama N, Borres MP, Komata T. Measurement of Ara h 1-, 2-, and 3-specific IgE antibodies is useful in diagnosis of peanut allergy in Japanese children. Pediatr Allergy Immunol 2012: 23: 573�C581. Background:? Food challenges are time-consuming, expensive, and not always possible to perform. Therefore, new tools to diagnose food allergy are desired. The aim was to evaluate IgE antibodies to peanut allergens in the diagnosis of peanut allergy in Japanese children using ImmunoCAP? and IgE immunoblotting.