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Article History

Received: 21 December 2017

Accepted: 31 October 2018

First Online: 19 November 2018

Ethics approval and consent to participate

: The original study protocol of STOP-IgAN was amended in 2009 and allowed to retrieve all available original renal biopsies from randomized trial participants. Written informed consent for re-assessment of available kidney biopsies was obtained from all patients included in this secondary substudy. The STOP-IgAN trial as well as the current substudy were approved by the Ethics Committee at the RWTH Aachen University Hospital (reference number 159/07).

: Not applicable.

: J. Floege has received consultant honoraria from Omeros, USA and Pharmalink, Sweden, and investigator fees from Anthera Pharmaceuticals Inc., USA. The other authors declare no competing financial interests.

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