Table 1.

Summary of the highest level of evidence for immunosuppressants and anti-TNF biologics [10].

Therapy	Level(s) of published evidence
5-ASA/sulfasalazine	Retrospective cohort study [13]
Corticosteroids	Expert opinion, European League Against Rheumatism Recommendations [14]
Thalidomide	Case reports [15–17]
Azathioprine, 6-MP	Retrospective cohort studies [13]
Mycophenolate	Case report [18]
Methotrexate	Case series [19]
Tacrolimus	Case report [20]
Infliximab	Single arm clinical trial [21]
	Retrospective cohort study [22]
	Case series [23]
Adalimumab	Prospective, nonplacebo controlled clinical trial [24]
Etanercept	Case report [25]