Five TNFα inhibitors are currently available for patient care in Europe: adalimumab and infliximab are, among others, approved for RD, IBD, and psoriasis, etanercept and certolizumab pegol are approved for RD and psoriasis and golimumab is approved for RD and IBD.1, 2, 3, 4, 5. This evidence concerns the gene TNF and psoriasis.