Abstract
Shwachman–Diamond syndrome (SDS) is an autosomal recessive inherited disorder characterized by bone marrow failure, exocrine pancreatic dysfunction, and skeletal abnormalities. SDS is typically caused by a pathogenic mutation in the Shwachman–Bodian–Diamond Syndrome (SBDS) gene. Patients with SDS have an increased risk of developing acute myeloid leukemia (AML) and myelodysplastic syndromes. We identified germline biallelic SBDS mutations (p.K62X and p.I167M) in a 50-year-old AML patient who had never experienced the typical symptoms of SDS. The K62X mutation is one of the most common pathogenic mutations, whereas the significance of the I167M mutation was unclear. Based on cellular experiments, we concluded that the I167M mutation contributed to the development of AML, and chemotherapy including topoisomerase inhibitors, which induce DNA double-strand breaks, may have been toxic to this patient. Our experience indicates that some asymptomatic Shwachman–Bodian–Diamond syndrome mutations contribute to the development of leukemia, and that careful treatment selection may be warranted for patients harboring these mutations.
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Acknowledgements
The authors are grateful to Y. Katsuki and M. Takata in Radiation Biology Center of Kyoto University for their help in experiments requiring γ-ray irradiation.
Funding
This work was supported by Ministry of Education, Culture, Sports, Science and Technology under Grant Number hp160219 and JP20cm0106501h0005 to SO.
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Shibata, S., Inano, S., Watanabe, M. et al. Identification of an asymptomatic Shwachman–Bodian–Diamond syndrome mutation in a patient with acute myeloid leukemia. Int J Hematol 115, 428–434 (2022). https://doi.org/10.1007/s12185-021-03251-2
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DOI: https://doi.org/10.1007/s12185-021-03251-2