Esther Harnisch1, Emilie P. Buddingh1, Peter Thijssen1, Alice S. Brooks1, Gertjan J. Driessen1, Rogier Kersseboom1, Arjan C. Lankester1
11 Leiden University Medical Center, Leiden, The Netherlands. Currently: Medical Centre Haaglanden, The Hague.; 2 Sophia Childrens Hospital, Rotterdam, The Netherlands.; 4 Erasmus Medical Centre, Rotterdam, The Netherlands.; Accepted 20 February 2016.; E.H. is the primary writing author. E.P.B. is the reviewing author. P.E.T. is the researcher responsible for gene sequencing of the ZBTB24 gene in this patient. A.B. is the clinical geneticist collaborating with and supervising R.K. G.J.D. is the reviewing author and pediatric immunologist who treated patient during EBV infection and HLH disease. R.K. is the reviewing author and clinical geneticist who diagnosed the patient with ICF2 syndrome. A.C.L. is the reviewing author and pediatric immunologist who treated patient during hematopoietic stem cell transplantation.; Received 6 December 2015. Revision received 16 February 2016.; The authors declare no funding or conflicts of interest.