Cmax (2.4 mg/ l vs 2.6 mg/ l), Cmin (1.2 mg/ l vs 1.4 mg/ l), and partial AUC (297 mgh/ l vs 316 mgh/ l), were shown to be comparable in RA patients treated with 50 mg etanercept once weekly (n=21) and 25 mg etanercept twice weekly (n=16), respectively.