1. A method of treating a patient having rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, or psoriasis, comprising administering to said patient a pharmaceutical composition comprising between 75 mM and 150 mM NaCl, between 5 mM and 100 mM arginine, between 0.5% and 2% (w/v) sucrose, and between 40 mg/mL and 100 mg/mL etanercept, wherein the pharmaceutical composition comprises less than 2.0 mM total additional buffering agent, and the pH of the pharmaceutical composition is between 6.1 and 6.5.
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