About the Authors

Sabine Frank

sabine.frank@med.uni-tuebingen.de

Affiliation Institute of Medical Psychology and Behavioral Neurobiology, fMEG Center, University of Tübingen, Tübingen, Germany

Martin Heni

Affiliations Department of Internal Medicine IV, University Hospital, Tübingen, Germany, German Center for Diabetes Research, Neuherberg, Germany

Anja Moss

Affiliation Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics and Adolescent Medicine, University of Ulm, Ulm, Germany

Julia von Schnurbein

Affiliation Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics and Adolescent Medicine, University of Ulm, Ulm, Germany

Sadaf Farooqi

Affiliation Metabolic Research Laboratories, Institute of Metabolic Science, Addenbrooke’s Hospital, University of Cambridge, Cambridge, United Kingdom

Hans-Ulrich Häring

Affiliations Department of Internal Medicine IV, University Hospital, Tübingen, Germany, German Center for Diabetes Research, Neuherberg, Germany

Andreas Fritsche

Affiliations Department of Internal Medicine IV, University Hospital, Tübingen, Germany, German Center for Diabetes Research, Neuherberg, Germany

Hubert Preissl

Affiliations Institute of Medical Psychology and Behavioral Neurobiology, fMEG Center, University of Tübingen, Tübingen, Germany, Institute for Diabetes Research and Metabolic Diseases of the Helmholtz Center Munich at the University of Tübingen, Tübingen, Germany, German Center for Diabetes Research, Neuherberg, Germany

Martin Wabitsch

Affiliation Division of Pediatric Endocrinology and Diabetes, Department of Pediatrics and Adolescent Medicine, University of Ulm, Ulm, Germany

Competing Interests

Amylin Pharmaceuticals, LLC (San Diego, USA) provided metreleptin for this patient under compassionate use provisions. There are no patents, products in development or marketed products to declare. 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: S. Frank MH AM HUH AF HP MW. Performed the experiments: S. Frank MH AM JvS. Analyzed the data: S. Frank MH AM. Wrote the paper: S. Frank MH JvS HP MW. Critical revision of the manuscript: AM S. Farooqi HUH AF. Interpretation of data: AM S. Farooqi HUH AF.