Abstract
Cytopenia due to the abnormal regulation of GATA1 could manifest as varying degrees of thrombocytopenia and/or anemia and more severely in male children than in female children. Here, we describe the case of pancytopenic and transfusion-dependent twin brothers at our center whose bone marrow puncture revealed low bone marrow hyperplasia. Whole-exome sequencing revealed that the twins had a new germline GATA1 mutation (nm_002049: exon 3:c.515 T >C:p.F172S), which confirmed the diagnosis of GATA1 mutation–related pancytopenia. The mutation was inherited from their mother, who was heterozygous for the mutation. Sanger sequencing verified the pathogenicity of the mutation. Further family morbidity survey confirmed that GATA1 mutation–related pancytopenia is an X-linked recessive genetic disorder. We developed haploid hematopoietic stem cell transplantation programs for twins, with the father as the only donor, and finally, the hematopoietic reconstruction was successful. Although they experienced acute graft-versus-host disease, hemorrhagic cystitis, and a viral infection in the early stage, no abnormal manifestations or transplant-related complications were observed 3 months after transplantation. Through hematopoietic stem cell transplantation technology for one donor and two receptors, we eventually cured the twins. The p.F172S variant in the new germline GATA1 mutation may play an essential role in the pathogenesis of GATA1 mutation–related cytopenia.
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The datasets used and/or analyzed during the current study are available from the corresponding author on reasonable request.
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Funding
This work was supported by the Clinical Research Plan of SHDC (grant number SHDC2020CR4089), the Research Foundation of Shanghai Municipal Health Commission (grant number 20194Y0112), and the Excellent Youth Talent Training Plan of Shanghai Children’s Hospital (grant number 2021YQ01).
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Xing-Hua Sun and Qin Liu contributed to the operation and follow-up of the study. Sheng-Nan Wu and Wu-Hen Xu contributed to the supervision and visualization of the study. Kai Chen contributed to the operation of the study, literature research, and drafting and editing of the manuscript. Jing-Bo Shao and Hui Jiang contributed to the supervision of the study and reviewing and editing of the manuscript. All authors have read and approved the final manuscript.
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Sun, XH., Liu, Q., Wu, SN. et al. Cytopenia: a report of haplo-cord transplantation in twin brothers caused by a novel germline GATA1 mutation and family survey. Ann Hematol 102, 3177–3184 (2023). https://doi.org/10.1007/s00277-023-05363-7
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DOI: https://doi.org/10.1007/s00277-023-05363-7