About the Authors

Caroline J. Voskens

Affiliation Department of Dermatology, University Hospital Erlangen, Erlangen, Germany

Simone M. Goldinger

Affiliation Department of Dermatology, University Hospital Zurich, Zurich, Switzerland

Carmen Loquai

For the ipilimumab network.

Affiliation Department of Dermatology, University Hospital Mainz, Mainz, Germany

Caroline Robert

Affiliation Institute Gustave Roussy, Department of Dermatology, Villejuif, France

Katharina C. Kaehler

For the ipilimumab network.

Affiliation Department of Dermatology, University Hospital Kiel, Kiel, Germany

Carola Berking

Affiliation Department of Dermatology and Allergology, University of Munich LMU, Munich, Germany

Tanja Bergmann

Affiliation Department of Internal Medicine (Gastroenterology, Endocrinology, and Pneumology), University Hospital Erlangen, Erlangen, Germany

Clemens L. Bockmeyer

Affiliation Department of Dermatology and Allergy/Department of Pathology, Skin Cancer Center Hannover/Hannover Medical School, Hannover, Germany

Thomas Eigentler

For the ipilimumab network.

Affiliation Department of Dermatology, University Hospital Tübingen, Tübingen, Germany

Michael Fluck

For the ipilimumab network.

Affiliation Department of Dermatology, Hospital Hornheide, Münster, Germany

Claus Garbe

Affiliation Department of Dermatology, University Hospital Tübingen, Tübingen, Germany

Ralf Gutzmer

Affiliation Department of Dermatology and Allergy/Department of Pathology, Skin Cancer Center Hannover/Hannover Medical School, Hannover, Germany

Stephan Grabbe

Affiliation Department of Dermatology, University Hospital Mainz, Mainz, Germany

Axel Hauschild

Affiliation Department of Dermatology, University Hospital Kiel, Kiel, Germany

Rüdiger Hein

Affiliation Department of Dermatology/III. Medical Department, Technische Universität München, München, Germany

Gheorghe Hundorfean

Affiliation Department of Internal Medicine (Gastroenterology, Endocrinology, and Pneumology), University Hospital Erlangen, Erlangen, Germany

Armin Justich

Affiliation Department of Dermatology, University Hospital Graz, Graz, Austria

Ullrich Keller

Affiliation Department of Dermatology/III. Medical Department, Technische Universität München, München, Germany

Christina Klein

Affiliation Department of Dermatology, University Hospital Mainz, Mainz, Germany

Christine Mateus

Affiliation Institute Gustave Roussy, Department of Dermatology, Villejuif, France

Peter Mohr

For the ipilimumab network.

Affiliation Department of Dermatology, Elbe Kliniken Buxtehude, Buxtehude, Germany

Sylvie Paetzold

For the ipilimumab network.

Affiliation Department of Dermatology, University Hospital Frankfurt, Frankfurt, Germany

Imke Satzger

Affiliation Department of Dermatology and Allergy/Department of Pathology, Skin Cancer Center Hannover/Hannover Medical School, Hannover, Germany

Dirk Schadendorf

Affiliation Department of Dermatology, University Hospital Essen, Essen, Germany

Marc Schlaeppi

Affiliation Department of Oncology/Hematology and Dermatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland

Gerold Schuler

Affiliation Department of Dermatology, University Hospital Erlangen, Erlangen, Germany

Beatrice Schuler-Thurner

Affiliation Department of Dermatology, University Hospital Erlangen, Erlangen, Germany

Uwe Trefzer

Affiliation Department of Dermatology, University Hospital Charité Berlin, Berlin, Germany

Jens Ulrich

For the ipilimumab network.

Affiliation Department of Dermatology, Hospital Quedlinburg, Quedlinburg, Germany

Julia Vaubel

Affiliation Department of Dermatology, University Hospital Essen, Essen, Germany

Roger von Moos

Affiliation Department of Dermatology, Cantonal Hospital Graubünden, Chur, Switzerland

Patrik Weder

Affiliation Department of Oncology/Hematology and Dermatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland

Tabea Wilhelm

For the ipilimumab network.

Affiliation Department of Dermatology, University Hospital Charité Berlin, Berlin, Germany

Daniela Göppner

For the ipilimumab network.

Affiliation Department of Dermatology, University Hospital Magdeburg, Magdeburg, Germany

Reinhard Dummer

Affiliation Department of Dermatology, University Hospital Zurich, Zurich, Switzerland

Lucie M. Heinzerling

lheinzer@post.harvard.edu

For the ipilimumab network.

Affiliations Department of Dermatology, University Hospital Erlangen, Erlangen, Germany, Department of Oncology/Hematology and Dermatology, Cantonal Hospital St. Gallen, St. Gallen, Switzerland

Competing Interests

The authors have read the journal’s policy and have the following conflict: Several authors are member of local and regional BMS-ipilimumab advisory boards. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: LMH SP DG CJV. Analyzed the data: LMH CJV. Contributed reagents/materials/analysis tools: SMG CL CR KK TB C. Berking TE MF CG RG AH RH GH AJ UK CK CM PM SP IS DS MS BS UT JU JV RvM PW TW DG RD. Wrote the paper: LMH CJV. Designed the figures: CL PW RvM C. Bockmeyer. Critically reviewed the manuscript: LMH CJV SG C. Berking GS RD.