Secukinumab Promising for Sustained Improvements in Palmoplantar & Nail Psoriasis Michele B. Kaufman, PharmD, BCGP | February 28, 2018 Reference Novartis AG. News release: Novartis’ Cosentyx is first biologic to show long-term efficacy in nail and palmoplantar psoriasis, which can impact up to 90% of psoriasis patients. 2017 Nov 30. Page: 1 2 | Single Page Share: