Abstract
B-cell linker (BLNK) protein is a non-redundant adaptor molecule in the signaling pathway activated by (pre) B-cell antigen receptor signals. We present two siblings with a homozygous deleterious frameshift mutation in BLNK, resulting in a block of B cell development in the bone marrow at the preB1 to preB2 stage, absence of circulating B cells and agammaglobulinemia. This is the first description of an enteroviral infection associated arthritis and dermatitis in a patient with BLNK deficiency.
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Acknowledgments
We would like to thank Howard Lederman MD, Ph.D from Johns Hopkins Hospital and Sara Sebnem Kilic, MD from Uludag University, School of Medicine, Bursa, Turkey, for providing clinical follow up regarding their patients.
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The authors declare that they have no conflict of interest.
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A. Naser Eddin, O. Shamriz and B. Keller contributed equally in the making of this manuscript and should all be considered as “first authors” .
K. Warnatz, O. Elpeleg, and P. Stepensky contributed equally in the making of this manuscript and should all be considered as “last authors”
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NaserEddin, A., Shamriz, O., Keller, B. et al. Enteroviral Infection in a Patient with BLNK Adaptor Protein Deficiency. J Clin Immunol 35, 356–360 (2015). https://doi.org/10.1007/s10875-015-0164-2
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DOI: https://doi.org/10.1007/s10875-015-0164-2