Orphanet J Rare Dis
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Orphanet J Rare Dis · Mar 2020
Development and validation of the prognostic value of ferritin in adult patients with Hemophagocytic Lymphohistiocytosis.
Hemophagocytic Lymphohistiocytosis (HLH) is a rare clinical syndrome with high mortality rate. The diagnosis of HLH draws on a constellation of clinical and laboratory abnormalities including extremely high serum ferritin levels. However, no biomarker has been firmly established as a clinically useful prognostic tool in HLH patients. We aimed to perform a retrospective analysis of two independent cohorts to explore the prognostic value of discharge serum ferritin for newly diagnosed adult HLH patients who recently started treatment. The prognostic value of serum ferritin levels at discharge (will be called as post-treatment ferritin level) was initially evaluated in a "test cohort" of 161 previously untreated consecutive adult HLH patients. It was then validated in a second cohort of 68 consecutive previously untreated patients (validation cohort). ⋯ These results suggest that the serum ferritin level can be used as an independent prognostic marker in the adult HLH patients.