^Clinical trial number NCT00037700 for "Evaluation of the Efficacy of Combination Treatment With Anakinra and Pegsunercept in Improving Rheumatoid Arthritis" at ClinicalTrials.gov
^Clinical trial number NCT00111423 for "Evaluating the Safety of Extended Treatment With Pegsunercept (PEG sTNF-RI)in Subjects With Rheumatoid Arthritis (RA)" at ClinicalTrials.gov
^ abFurst DE, Fleischmann R, Kopp E, Schiff M, Edwards C, Solinger A, Macri M (December 2005). "A phase 2 dose-finding study of PEGylated recombinant methionyl human soluble tumor necrosis factor type I in patients with rheumatoid arthritis". The Journal of Rheumatology. 32 (12): 2303–10. PMID16331754.