CD4 and obesity due to melanocortin 4 receptor deficiency: Obesity status (normal weight or obese) modified the association between DEX-induced CD4+ T-lymphocyte FKBP51 expression for both ATAQ score (p-interaction = 0.05) and ACT score (p-interaction = 0.07) but not for outcomes of ASUI score and FEV1pp (Table 2).