Table 1.

Drugs and treatments of interest in the study

Biologic	Traditional oral systemic	Topical
Licensed for psoriasis	Traditional oral systemics of interest	Phototherapy
Adalimumab	Acitretin	PUVA
Etanercept	Cyclosporine	UVB
Infliximab	Methotrexate
Ustekinumab	Prednisone

Other biologics	Other traditional systemics	Other topical
Abatacept	Azathioprine	Various
Alefacept (Withdrawn)	Hydroxychloroquine
Anakinra	Hydroxyurea
Certolizumab pegol	Isotretinoin
Efalizumab (Withdrawn)	Leflunomide
Golimumab	Mycophenolate mofetil
Rituximab	Sulfasalazine
Tocilizumab	Thioguanine

PUVA psoralen and ultraviolet A therapy; UVB ultraviolet type B therapy