Abstract
X-linked agammaglobulinemia (XLA) is clinically characterized by reduced number of peripheral B cells and diminished levels of serum immunoglobulins, and caused by a mutation in the Bruton’s tyrosine kinase (BTK) gene, which play a pivotal role in signal transduction of pre-B-cell receptor (BCR) and BCR. B-cell precursor acute lymphoblastic leukemia (BCP-ALL) is the most common malignancy in children, and it may be associated with gene alterations that regulate B-cell development. Here we described a first case of XLA associated BCP-ALL. The whole-exome sequencing revealed a somatic mutation in MLL2 in the sample from the onset of BCP-ALL. This study suggests that the alterations of BTK and MLL2 synergistically function as leukemogenesis.
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Acknowledgments
This study was supported by grants from the Ministry of Health, Labour, Welfare of Japan. We thank Chikako Sakai and Hitoshi Moriuchi for their excellent technical assistance. This study is dedicated to the late Dr. Toshio Miyawaki.
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Hoshino, A., Okuno, Y., Migita, M. et al. X-Linked Agammaglobulinemia Associated with B-Precursor Acute Lymphoblastic Leukemia. J Clin Immunol 35, 108–111 (2015). https://doi.org/10.1007/s10875-015-0127-7
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DOI: https://doi.org/10.1007/s10875-015-0127-7