Table 1

Clinical findings at diagnosis and mutational analysis of the FHL patients

CharacteristicsPatient no.
12345
Ethnic origin Netherlands Sweden Pakistan Lebanon Turkey 
Consanguinity No No Yes Yes Yes 
Sex Female Male Male Male Male 
Affected gene PRF1 PRF1 UNC13D STX11 STX11 
Mutation* H222Q E317R + D430Y W382X T37FsX62 Q268X 
Age at diagnosis, mo 72 
Fever higher than 38°C 
Splenomegaly 
Pancytopenia 
Hypertriglyceridemia − 
Hypofibrinogenemia 
Ferritin, μg/L 22000 16000 20000 5000 1000 
NK cell activity Absent Partial restoration by IL-2 Partial restoration by IL-2 Partial restoration by IL-2 Partial restoration by IL-2 
Hemophagocytosis − 
Outcome Alive and well after SCT Dead before SCT Alive and well, SCT planned Alive and well after SCT Alive and well after SCT 
CharacteristicsPatient no.
12345
Ethnic origin Netherlands Sweden Pakistan Lebanon Turkey 
Consanguinity No No Yes Yes Yes 
Sex Female Male Male Male Male 
Affected gene PRF1 PRF1 UNC13D STX11 STX11 
Mutation* H222Q E317R + D430Y W382X T37FsX62 Q268X 
Age at diagnosis, mo 72 
Fever higher than 38°C 
Splenomegaly 
Pancytopenia 
Hypertriglyceridemia − 
Hypofibrinogenemia 
Ferritin, μg/L 22000 16000 20000 5000 1000 
NK cell activity Absent Partial restoration by IL-2 Partial restoration by IL-2 Partial restoration by IL-2 Partial restoration by IL-2 
Hemophagocytosis − 
Outcome Alive and well after SCT Dead before SCT Alive and well, SCT planned Alive and well after SCT Alive and well after SCT 

+ indicates presence; −, absence; SCT, stem cell transplantation.

*

Patient no. 1: H222Q = c.(666C>A) + c.(666C>A) p.H222Q; no. 2: E317R + D430Y = c.(949G>A) + c.(1288G>T) p.E317R + D430Y; no. 3: W382X = c.(1145G>A) + c.(1145G>A) p.W382X; no. 4: T37FsX62 = c.(110delC) + c.(110delC) p.T37FsX62; and no. 5: Q268X = c.(802C>T) + c.(802C>T) p.Q268X.

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