Bouabdallaoui N, Claggett B, Zile MR, McMurray JJV, O’Meara E, Packer M, et al. Growth differentiation factor-15 is not modified by sacubitril/valsartan and is an independent marker of risk in patients with heart failure and reduced ejection fraction: the PARADIGM-HF trial. The gene discussed is GDF15; the disease is heart failure.