Ca. to tredjedele af de patienter, der fik Humira som tillægsbehandling, opnåede en symptomlindring på mindst 20% efter 6 måneder sammenlignet med placebo som tillægsbehandling, hvor kun en fjerdedel opnåede samme symptomlindring.
In rheumatoid arthritis, the greatest reductions in symptoms were seen in the studies examining Humira as an add-on to methotrexate: around two thirds of the patients adding Humira had at least a 20% reduction in symptoms after six months, compared with a quarter of those adding placebo.