Arthritis Clinical Trials

Inclusion Criteria: Diagnosis of moderate to severe Rheumatoid Arthritis (RA) or moderate to severe Plaque Psoriasis (PsO) and a candidate for treatment with etanercept in the opinion of the investigator in addition to the caring physician's intent to initiate treatment with etanercept. - Naive to etanercept. - Naive to other autoinjector pens or prefilled syringes for Tumor Necrosis Factor (TNF)-inhibitor therapy or other subcutaneous biologics for RA. - Willing to self-inject per investigator judgement at screening and capable of self-injection using the autoinjector A or B as documented at baseline by the investigator. - Able to read and write in English. -

Exclusion Criteria: Latex allergy. - Subject has an active infection (including chronic or localized infections) for which anti-infectives were indicated within 4 weeks prior to first dose of etanercept. - Subject had prosthetic joint infection within 5 years of screening or native joint infection within 1 year of screening.

• Other criteria may apply.