Uric Acid and Rebif

The question “anyone know of a gout/uric acid connection with the drug Rebif?” sent me looking for some appropriate uric acid research.
I found that Rebif is a brand of interferon beta-1a, a treatment used for MS sufferers. on further checking I found 2 relevant, but contradictory studies:
Eur J Neurol. 2008 Apr;15(4):394-7. Epub 2008 Feb [...]