Table 1.

The HScore, from Fardet et al. [4]

Parameter	No. of points (criteria for scoring)
Known underlying immunosuppression*	0 (no) or 18 (yes)
Temperature (°C)	0 (<38.4), 33 (38.4–39.4) or 49 (>39.4)
Organomegaly	0 (no), 23 (hepatomegaly or splenomegaly) or 38 (hepatomegaly and splenomegaly)
No. of cytopenias**	0 (1 lineage), 24 (2 lineages) or 34 (3 lineages)
Ferritin (ng/ml)	0 (<2000), 35 (2000–6000) or 50 (>6000)
Triglyceride (mmol/l)	0 (<1.5), 44 (1.5–4) or 64 (>4)
Fibrinogen (mg/l)	0 (>2.5) or 30 (≤2.5)
Serum glutamic oxaloacetic transaminase (IU/l)	0 (<30) or 19 (≥30)
Haemophagocytosis features on bone marrow aspirate	0 (no) or 35 (yes)

^*Human immunodeficiency virus positive or receiving long-term immunosuppressive therapy (i.e., glucocorticoids, cyclosporine, azathioprine).

^**Defined as a haemoglobin level of ≤9.2 mg/dl and/or a leucocyte count of ≤5000/mm³ and/or a platelet count of ≤10,000/mm³