The authors would like to thank all local investigators from the participating hospitals involved in the LEARNS study. The LEARNS study is an interuniversity collaboration in the Netherlands that is established to perform a double-blind, placebo-controlled randomized clinical trial on the efficacy of levamisole on relapses in children with a first episode of steroid-sensitive nephrotic syndrome, and to study basic mechanisms underlying nephrotic syndrome and the mode of action of levamisole. Principal investigators are (in alphabetical order): A.H.M. Bouts (Department of Pediatric Nephrology, Amsterdam UMC, location AMC, Amsterdam, the Netherlands), S. Florquin (Department of Pathology, Amsterdam UMC, location AMC, Amsterdam, the Netherlands), J.E. Guikema (Amsterdam UMC, location AMC, Amsterdam, the Netherlands), L. Haverman (Psychosocial Department, Amsterdam UMC, location AMC, Amsterdam, the Netherlands), L.P.W.J. van den Heuvel (Radboud Institute for Molecular Sciences, Radboud University Medical Center, Nijmegen, the Netherlands), E. Levtchenko (Department of Pediatric Nephrology, University Hospitals Leuven, Leuven, Belgium), R.A.A. Mathôt (Department of Hospital Pharmacy and Clinical Pharmacology, Amsterdam UMC, location AMC, Amsterdam, the Netherlands), M.F. Schreuder (Department of Pediatric Nephrology, Radboud University Medical Center, Nijmegen, the Netherlands), B. Smeets (Radboud Institute for Molecular Sciences, Radboud University Medical Center, Nijmegen, the Netherlands), and J.A.E. van Wijk (Department of Pediatric Nephrology, Amsterdam UMC, location AMC, Amsterdam, the Netherlands).

LEARNS consortium study group (in alphabetical order)

Abdul Adeel, MD, Spaarne Gasthuis, Department of Paediatrics, Haarlem, the Netherlands.

Anna Bael, MD PhD, ZNA Hospital Middelheim, Queen Paola Children’s Hospital, Department of Paediatric Nephrology, Antwerp, Belgium. Faculty of Medicine, University of Antwerp, Antwerp, Belgium.

Antonia H.M. Bouts, MD PhD, Amsterdam University Medical Centers, Emma’s Children’s Hospital, Department of Paediatric Nephrology, Amsterdam, the Netherlands.

Nynke Buter, MD, North West Clinics, location Alkmaar, Department of Paediatrics, Alkmaar, the Netherlands.

Hans van der Deure, MD, Deventer Hospital, Department of Paediatrics, Deventer, the Netherlands.

Eiske Dorresteijn, Erasmus Medical Center, Sophia Children’s Hospital, Department of Paediatric Nephrology, Rotterdam, the Netherlands.

Sandrine Florquin, MD PhD, Amsterdam University Medical Centers, location University of Amsterdam, Department of Pathology, Amsterdam, the Netherlands.

Valentina Gracchi, MD, University Medical Center Groningen, Beatrix Children’s Hospital, Department of Paediatric Nephrology, Groningen, the Netherlands.

Flore Horuz, MD, Maastricht University Medical Center, Department of Paediatric Nephrology, Maastricht, the Netherlands.

Francis Kloosterman-Eijgenraam, MD, Isala Hospital, Department of Paediatrics, Zwolle, the Netherlands.

Elena Levtchenko, MD PhD, University Hospitals Leuven, Department of Paediatric Nephrology, Leuven, Belgium. Department of Development and Regeneration, Catholic University Leuven, Leuven, Belgium.

Elske Mak-Nienhuis, MSc, Amsterdam University Medical Centers, location University of Amsterdam, Emma Children’s Hospital, Department of Paediatric Nephrology, Amsterdam, the Netherlands.

Ron Mathôt, PharmD PhD, Amsterdam University Medical Centers, location University of Amsterdam, Department of Hospital Pharmacy and Clinical Pharmacology, Amsterdam, the Netherlands.

Floor Oversteege, MD, Medisch Spectrum Twente, Department of Pediatrics, Enschede, the Netherlands.

Saskia de Pont, MD, Amphia Hospital, Department of Pediatrics, Breda, the Netherlands.

Roos van Rooij-Kouwenhoven, MD, Leiden University Medical Center, Willem-Alexander Children’s Hospital, Department of Paediatric Nephrology, Leiden, the Netherlands.

Michiel Schreuder, MD PhD, Radboud University Medical Center, Amalia Children’s Hospital, Department of Paediatric Nephrology, Nijmegen, the Netherlands.

Rixt Schriemer, MD, Medical Center Leeuwarden, Department of Paediatrics, Leeuwarden, the Netherlands.

Paul Vos, MD, Haga Teaching Hospital, Juliana Children’s Hospital, The Hague, the Netherlands.

Johan Vande Walle, MD PhD, University Hospitals Ghent, Department of Paediatric Nephrology, Ghent, Belgium.

Joanna van Wijk, MD PhD, Amsterdam University Medical Centers, location Vrije Universiteit, Emma Children’s Hospital, Department of Paediatric Nephrology, Amsterdam, the Netherlands.