Conflicts of interest

The authors declare no conflict of interest. Outside the submitted work, some authors received honoraria for lectures, travel grants, or research grants. FFK received travel grants from Merck, Novartis, BMS and Alexion as well as a German Research Foundation (DFG)–funded fellowship as part of the Clinician Scientist Program (PRACTIS) at Hannover Medical School. KFJ received research support from Else Kröner Fresenius Foundation and travel compensation and congress fee from Merck and Novartis. DR has no conflict of interest to declare. RS reports research funding by the Else Kröner Fresenius Foundation and the Cofoni Network Lower Saxony. KWS reports honoraria for lectures or travel reimbursements for attending meetings from Biogen, Merck, Bavarian Nordic and Bristol-Myers Squibb as well as research support from Bristol-Myers Squibb. MP reports honoraria for lectures and travel expenses for attending meetings from Alexion,, argenx, Bayer Vital, Biogen, Hexal AG, Janssen-Cilag, Merck Serono, Novartis, Roche, Sanofi, Teva, His research is supported by Argenx, Biogen and Hexal. TR reports grants from German Ministry of Education, Science, Research and Technology, during the conduct of the study; grants and personal fees from Sanofi-Genzyme; personal fees from Biogen; personal fees and nonfinancial support from Merck Serono; personal fees from Roche, Teva, Alexion, Argenx, UCB, and BMS outside the submitted work. SGM received honoraria for lecturing and travel expenses for attending meetings from Almirall, Amicus Therapeutics Germany, Bayer Health Care, Biogen Idec, Celgene, Diamed, Sanofi-Aventis, MedDay, Merck Serono, Novartis, Novo Nordisk, ONO Pharma, Roche, Chugai Pharma, QuintilesIMS, and Teva. His research is funded by the German Ministry for Education and Research (BMBF), Bundesinstitut f¨ur Risikobewertung (BfR), Deutsche Forschungsgemeinschaft (DFG), Else Kroener Fresenius Foundation, Gemeinsamer Bundesausschuss (G-BA), German Academic Exchange Service, Hertie Foundation, Interdisciplinary Center for Clinical Studies (IZKF) Muenster, German Foundation Neurology, and by Alexion, Almirall, Amicus Therapeutics Germany, Biogen Idec, Diamed, Fresenius Medical Care, Sanofi-Aventis, HERZ Burgdorf, Merck Serono, Novartis, ONOPharma, Roche, and Teva. TS reports honoraria for lectures and travel expenses for attending meetings from Alexion, Alnylam Pharmaceuticals, argenx, Bayer Vital, Biogen, Celgene, Centogene, CSL Behring, Euroimmun, Grifols, Hexal AG, Janssen-Cilag, Merck Serono, Novartis, Pfizer, Roche, Sanofi, Siemens, Swedish Orphan Biovitrum, Teva, Viatris. His research is supported by the German Ministry for Education and Research (BMBF), Bristol-Myers Squibb Foundation for Immuno-Oncology, Claudia von Schilling Foundation for Breast Cancer Research, Else Kröner Fresenius Foundation, Hannover Biomedical Research School (HBRS), Alnylam Pharmaceuticals, CSL Behring, Novartis, Sanofi Genzyme, VHV Foundation.

Consent to participate and consent-to-disclose for publication

The patient gave written informed consent to participate as well as consent-to-disclose for publication in the present study.

Ethical standard statement

The investigation followed the rules of the Declaration of 1964 and its revisions.