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Etoposide in patients with rheuma-associated hemophagocytic lymphohistiocytosis / macrophage activation syndrome

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Background/aim

Rheuma-associated hemophagocytic lymphohistiocytosis (Rh-HLH), also called macrophage activation syndrome (MAS), is a severe complication of systemic inflammatory disorders. Rh-HLH has clinical and laboratory similarities to other forms of HLH, and is potentially life threatening. Treatment of Rh-HLH has not been standardized yet, but it commonly includes a variety of agents such as high-dose corticosteroids, cyclosporine, intravenous immunoglobulin and, in severe cases, sometimes etoposide. Here we report on the experience of etoposide in two children with severe Rh-HLH admitted to the Karolinska Children’s Hospital over the 6 months July 2010 to Dec 2010.

Methods

1) A 16-yr old boy with systemic lupus erythematosus was referred from the local hospital because of accelerating inflammatory disease. He was initially administered methyl-prednisolone (MP) pulses for 3 days followed by prednisolone 90 mg daily. He developed clinically signs of severe CNS-affection, confirmed by MRI, and diagnostic criteria consistent with MAS. Treatment with etoposide 75 mg/m2 weekly was administered for a month. His CNS symptoms rapidly improved, he recovered fully and a subsequent MRI was normal.

2) A 9-yr old girl with systemic juvenile idiopathic arthritis on treatment with tocilizumab and oral methotrexate was infected with EBV. She developed a fulminant picture of MAS. She was initially administered MP-pulses. However, within 24 hours her cerebral function deteriorated further, and therapy was intensified with etoposide 100 mg/m2 (a total of 8 courses), rituximab 375 mg/m2 and dexamethasone. She also developed seizures and an abnormal MRI. She recovered fully, and a subsequent MRI was normal.

Results

Two children with Rh-HLH and CNS affection both responded well and without severe side effects to weekly etoposide 75-100 mg/m2 as a complement to high-dose MP pulses.

Conclusion

Etoposide is worth considering in severe Rh-HLH.

Author information

Correspondence to AnnaCarin Horne.

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Keywords

  • Systemic Lupus Erythematosus
  • Etoposide
  • Juvenile Idiopathic Arthritis
  • Intravenous Immunoglobulin
  • Tocilizumab