Additional Relevant Details Data presented evaluated biomarkers from children who underwent three double-blind, placebocontrolled food challenges (DBPCFC) during VIPES and OLFUS-VIPES: at baseline, year-1 and year-2 of treatment with Viaskin Peanut. Concentrations of serum biomarkers (including peanut-specific IgE [p-sIgE], peanut-specific IgG4 [p-sIgG4] and Ara h 2 p-sIgE [a2-sIgE]) and other variables were collected before each challenge. In this study, the DBPCFC outcome was modeled as a binary endpoint defined by three reactive threshold doses of 300 mg, 1000 mg and 2000 mg. Very short signatures of two to four variables measured predictability of response to the OFC for all three models. The ratios p-sIgG4/a2-sIgE and p-sIgG4/p-sIgE were always among the top-ranked variables. Based on these results, the researchers concluded that modeling the response to an oral food challenge based on a subset of serum biomarkers is feasible, and the model may eventually be employed to monitor treatment progression with Viaskin Peanut.