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Haemophagocytic lymphohistiocytosis caused by GATA2 deficiency: a report on three patients
Lin Wu1, Jingshi Wang1, Deli Song1
1Department of Haematology, Beijing Friendship Hospital, Capital Medical University, No.95 Yongan Road Xicheng District, Beijing, China.
Background:
Haemophagocytic lymphohistiocytosis (HLH) is a syndrome that occurs in patients with severe systemic hyperinflammation. GATA binding protein 2 (GATA2) is a transcription factor and key component in haematopoiesis and stem cell biology.
Case Presentation:
Three patients with HLH, one with Mycobacterium avium infection, one with Epstein-Barr virus (EBV) infection, and one with Mycobacterium kansasii infection, were all subsequently found to have a defect in the GATA2 gene through genetic testing.
Conclusions:
GATA2 deficiency syndrome should be considered in patients with myelodysplastic syndrome, nontuberculous mycobacterium infection and HLH. In addition, the GATA2 gene variant may be a genetic defect that could be the cause of the primary HLH. However, further studies are needed to confirm the role of GATA2 pathogenic variants in the pathogenesis of HLH.
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