| Study ID |
Reason for exclusion from meta‐analysis |
| Hamid 2014 |
Single study investigating tasisulam |
| Kefford 2010 |
Single study investigating bosentan |
| Hofmann 2011 |
Single study comparing dacarbazine and best supportive care |
| Schadendorf 2006 |
Single study investigating dendritic cells therapy |
| Agarwala 2002 |
Single study investigating histamine with interleukin‐2 |
| Bajetta 1985 |
Different polychemotherapy regimens not compared in other studies |
| Beretta 1976 |
Different polychemotherapy regimens not compared in other studies |
| Cocconi 1992 |
Different polychemotherapy regimens not compared in other studies |
| Dummer 2006 |
Different PEG‐interferon schedules tested |
| Flaherty 2001 |
Inpatient and outpatient interleukin‐2‐based regimens not compared in other studies |
| Glaspy 2009 |
Different lenalidomide schedules not compared in other studies |
| Jelic 2002 |
Different polychemotherapy regimens not compared in other studies |
| Keilholz 1997 |
Study comparing biochemotherapy versus biotherapy |
| Legha 1996 |
Study comparing alternating and sequential biochemotherapy and chemotherapy |
| Miller 1989 |
Single study investigating Indomethacine with interferon |
| Moon 1975 |
Different single‐agent chemotherapy regimens not compared in other studies |
| Presant 1982 |
Different polychemotherapy regimens not compared in other studies |
| Richtig 2004 |
Different temozolomide and interferon schedules tested |
| Wittes 1978 |
Different polychemotherapy regimens not compared in other studies |
| Vuoristo 2005 |
Different interferon‐based regimens not compared in other studies |
| Punt 2006 |
Different biochemotherapy regimens not compared in other studies |
| Reichle 2007 |
Single study investigating chemotherapy and COX‐2 inhibitor |
| Sparano 1993 |
Single study comparing interleukin‐2 with versus without interferon‐alpha |
| Wolchok 2010 |
Different ipilimumab schedules tested |
| Avril 2004 |
Single study comparing fotemustine and dacarbazine |
| O'Day 2011 |
Single study testing Intetumumab |
| Ranson 2007 |
Single study testing lomeguatrib |
| Hersh 2015 |
Single study testing nab‐paclitaxel |
| Bedikian 2006 |
Single study testing oblimersen |
| Bedikian 2011 |
Single study testing DHA‐paclitaxel |
| Weber 2009 |
Single study testing PF‐3512676 |
| Carvajal 2014 |
Single study testing ramucirumab |
| Balch 1984 |
Single study testing dacarbazine and C parvum after surgery |
| Eigentler 2008 |
Single study testing vindesine after surgery |
| Lawson 2015 |
Single study testing GM‐CSF and a polypeptide vaccination after surgery |
| Eisen 2010 |
Single study testing lenalidomide |
| Middleton 2015 |
Single study testing veliparib |
| Testori 2008 |
Single study testing vetaspen |
