Study	Reason for exclusion
Abufarag 2010	Other treatment
Akhyani 2010	Other treatment
Altmeyer 1994	Not plaque‐type psoriasis
Angsten 2007	Not a trial
Anonymous 2005	Not a trial
Anonymous 2008	Not a trial
Arifov 1998	Not a randomized trial
Armati 1972	Other treatment
Avgerinou 2011	Not randomized trial
Bagot 1994	Other treatment
Bartlett 2008	Not a trial
Barzegari 2004	Other treatment
Batchelor 2009	Not a trial
Bayerl 1992	Other treatment
Beissert 2009	Other treatment
Berbis 1989	Assessment < 8 weeks
Bhuiyan 2010	Other treatment
Bigby 2004	Not a trial
Bissonnette 2006	Other treatment
Bissonnette 2010	Other treatment
Bjerke 1989	Other treatment
Callis Duffin 2017	Comparison of the same drug with the same dosages
Cassano 2006	Identical dosing regimens
Cassano 2010	Not a trial
Cather 2006	Dose ranging after remission
Chládek 2002	Basic science (aim of study: to understand the physiopathology of the disease)
Chodorowska 1999a	Not a trial
Chodorowska 1999b	Not a trial
de Jong 2003	Other treatment
Dubiel 1972	Not a trial
Duffin 2016	Comparison of 2 different ways of drug injection for the same drug and the same dosage
Ecker‐Schlipf 2009	Other treatment
Elewski 2007	Pooled trials
Ellis 1986	Assessement < 8 weeks
Ellis 2002	Medico‐economic study
Ellis 2012	Other treatment
Engst 1989	Assessment < 8 weeks
Erkko 1997	Basic science (aim of study: to understand the physiopathology of the disease)
Ezquerra 2007	Other treatment
Fernandes 2013	Not a trial
Finzi 1993	Other treatment
Fleischer 2005	Other treatment
Fredriksson 1971	Other treatment
Fredriksson 1978	Other treatment
Friedrich 2001	Other treatment
Gambichler 2011	Other treatment
Ganguly 2004	Pooled trials
Gil 2003	Not a randomized trial
Goerz 1978	Not a trial
Gollnick 1988	Other treatment
Gollnick 1993	Other treatment
Gollnick 2002	Other treatment
Gottlieb 2002c	Other treatment
Gottlieb 2003a	Other Treatment
Gottlieb 2004b	Pooled trials
Gottlieb 2005a	Other treatment
Gottlieb 2010	Cross‐over trial
Goupille 1995	Not a randomized trial
Griffiths 1998	Other treatment
Griffiths 2002a	Pooled trials
Griffiths 2002b	Pooled trials
Griffiths 2005	Pooled trials
Grim 2000	Basic science (aim of study: to understand the physiopathology of the disease)
Grossman 1994	Other treatment
Gulliver 1996	Not a trial
Gupta 2005	Other treatment
Gupta 2007	Other treatment
Gupta 2008	Other treatment
Han 2013	Other treatment
Hashizume 2007	Comparison of 2 methods of administration
Heule 1988	Assessment < 8 weeks
Ho 2010	Other treatment
Hunter 1972	Other treatment
Iest 1989	Not randomized trial
Kavanaugh 2009	Not a randomized trial
Kimball 2008	Drug withdrawn for safety reasons
Kimball 2011	Drug withdrawn for safety reasons
Koo 1998	Other treatment
Kopp 2015	Phase 1 trial
Kragballe 1989	Other treatment
Krishnan 2005	Pooled trials
Krueger 1980	Other treatment
Krueger 2002b	Not a trial
Krueger 2003	Not a trial
Krueger 2012	Phase 1 trial
Krueger 2015	Phase 1 trial
Kuijpers 1998	Other treatment
Lajevardi 2015	Other treatment
Langewouters 2005	Other treatment
Langley 2006	Other treatment
Langley 2010	Other treatment
Langner 2004	Not plaque‐type psoriasis
Lauharanta 1989	Other treatment
Lawrence 1983	Other treatment
Leavell 1970	Other treatment
Lebwohl 2003a	Pooled trials
Lebwohl 2009	Pooled trials
Lebwohl 2012	Other treatment
Lebwohl 2013	Other treatment
Ledo 1988	Other treatment
Legat 2005	Other treatment
Leonardi 2010a	Pooled trials
Leonardi 2010b	Not a randomized trial
Leonardi 2010c	Pooled trials
Leonardi 2011a	Not plaque‐type psoriasis
Levell 1995	Other treatment
Liang 1995	Assessment < 8 weeks
Lui 2011	Other treatment
Lui 2012	Other treatment
Lynde 2012	Other treatment
Macdonald 1972	Not a randomized trial
Mahrle 1995	Other treatment
Malik 2010	Other treatment
Marecki 2004	Other treatment
Marks 1986	Not a randomized trial
McInnes 2013	Pooled trials
Mease 2011	Drug withdrawn for safety reason
Meffert 1989	Other treatment
Menon 2012	Basic science (aim of study: to understand the physiopathology of the disease)
Menter 2007a	Pooled trials
Menter 2014	Drug withdrawn for safety reasons
Meyer 2011	Other treatment
Mittal 2009	Other treatment
Moller 2009	Other treatment
Monk 1986	Not a randomized trial
Montgomery 1993	Other treatment
Mrowietz 1991	The two study arms compared the same molecule with the same dosage
Mrowietz 2012	Pooled trials
Narang 2012	Other treatment
Nieboer 1990	Other treatment
Nijsten 2008	Not a trial
Noda 2011	Not a randomized trial
Novotny 1973	Not a trial
Nyfors 1978	Not a trial
Orfanos 1978	Other treatment
Orfanos 1979	Other treatment
Ortonne 2008	Comparison of 2 schemes of administration
Ortonne 2011	Other treatment
Osamu 2014	Phase 1 trial
Papp 2001	Other treatment
Papp 2006	Other treatment
Papp 2008a	Other treatment
Papp 2009	Pooled data
Papp 2011a	Pooled trials
Papp 2011b	Drug withdrawn for safety reasons
Papp 2011c	Drug withdrawn for safety reasons
Papp 2012c	Phase 1 trial
Papp 2012d	Pooled trials
Park 2013	Other treatment
Paul 2012	Other treatment
Paul 2014	Other treatment
Pettit 1979	Assessment < 8 weeks
Petzelbauer 1990	Not a randomized trial
Piascik 2003	Not a trial
Ports 2013	Other treatment
Punwani 2012	Other treatment
Rabasseda 2012	Not a trial
Radmanesh 2011	Comparison of 2 schemes of administration
Raman 1998	Other treatment
Reich 2011	Pooled trials
Reich 2014	Other treatment
Reitamo 1999	Other treatment
Reitamo 2001	Other treatment
Rim 2003	Other treatment
Rinsho Iyaku 1991	Other treatment
Ritchlin 2006a	Not a randomized trial
Ritchlin 2006b	Not a randomized trial
Ritchlin 2006c	Not a randomized trial
Salim 2006	Other treatment
Scholl 1981	Other treatment
Schopf 1998	Other treatment
Schulze 1991	Other treatment
Shintani 2011	Comparison of 2 schemes of administration
Shiohara 1992	Not a trial
Shupack 1997	Not a trial
Simonova 2005	Other treatment
Sofen 2011	Basic science (aim of study: to understand the physiopathology of the disease)
Sofen 2014	Phase 1 trial
Spadaro 2008	Not a trial
Spuls 2012	Not a trial
Sticherling 1994	Not a trial
Strober 2004	Not a trial
Strober 2012	Not a randomized trial
Sweetser 2006	Cross over trial
Talwar 1992	Not a randomized trial
Tejasvi 2012	Other treatment
Thaçi 2002	The two study arms compared the same molecule with the same dosage
Thaçi 2010	Other treatment
Tong 2008	Other treatment
Van Joost 1988	Assessment shorter than 8 weeks
Vena 2005	Comparison of 2 schemes of administration
Vena 2012	Other treatment
Viglioglia 1978	Not a trial
Witkamp 1995	Other treatment
Wolf 2012	Other treatment
Wright 1966	Not a randomized trial
Wu 2015	Other treatment
Yesudian 2013	Other treatment
Yoon 2007	Dose‐escalation study
Zachariae 2008	Other treatment
Zhang 2007	Other treatment
Zhang 2009a	Other treatment
Zhang 2009b	Other treatment
Zhang 2012	Other treatment
Zhu 2009	Pooled trials
Zhuang 2016	Phase 1 trial
Zobel 1987	Not a trial