Thrombotic microangiopathy-like acute kidney injury revealing a germline GATA1 mutation in a child with inherited cytopenia.
Amal E Gohary, Doaa M Youssef, Diana Hanna et al.
✦ AI-curated · Sources linked
Case in brief
An 8-year-old boy with a history of steroid-dependent cytopenias and congenital anomalies presented with severe infection, hemolysis, thrombocytopenia, and acute kidney injury requiring hemodialysis. Despite meeting criteria for thrombotic microangiopathy (TMA), tests for primary TMA were normal. Whole-exome sequencing revealed a pathogenic GATA1 mutation, leading to a diagnosis of GATA1-related dyserythropoietic anemia. His renal function fully recovered with supportive care.
What made this case unusual
The case highlights a TMA-like presentation due to a germline GATA1 mutation, which is atypical for TMA and emphasizes the need for genomic testing in such scenarios.
Diagnostic / clinical pearl
Clinicians should consider secondary TMA-like syndromes in patients with inherited marrow disorders, especially when primary TMA tests are negative.
Why it matters
This case illustrates the critical role of genomic testing in diagnosing atypical presentations of TMA, potentially guiding more effective management strategies.