Children's Hospital Medical Center, Cincinnati
The purpose of this observational study is to collect data on the natural history of disease of patients with Hemophagocytic Lymphohistiocytosis (HLH) including diagnosis, treatments, responses, and outcomes.
Hemophagocytic Lymphohistiocytosis (HLH) is a complex, hyperinflammatory syndrome resulting from the interplay of genetic predisposition and various environmental factors. Despite available treatment options for HLH, approximately 30% of patients do not respond to therapy. Moreover, the standard therapy is constrained by its toxicities, and safer treatments are pursued. There is an unmet need for a deeper understanding of the natural history, clinical/etiologic diversity, complications, and treatment outcomes of patients with HLH, specifically from North America. The proposed study, a collabo…
Inclusion Criteria: * Patients with clinically suspected or confirmed HLH, including those meeting the HLH-2004 diagnostic criteria (primary or secondary forms, including malignancy) and other forms of HLH (macrophage activation syndrome \[MAS\], cytokine release syndrome \[CRS\], etc.) * Signed and dated informed consent and assent (adolescents) Exclusion Criteria: * None
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