Table 1

Experimental and clinical data in HUS patients 1 through 4 and their parents

Patient/countryAge at debut/age at sampling, yNo. episodesSexFH
FH level, %40  (normal range, 69%-154%)FH function*C3 level, g/L (normal range, 0.77-1.38 g/L)Clinical features at sampling
Heterozygous mutationPolymorphism
Patient 1/Sweden 30/32, 33, 34 V1168E, SCR20 E936D SCR16, N1050Y SCR18 155 ↓ 0.59 Reduced renal function, plasma exchange every 7-14 d 
    Mother    V1168E N1050Y 152 ↓/N 1.81 Unaffected 
    Father     E936D 100 1.23 Lymphosarcoma 
Patient 2/USA§ 3/5, 8 E1198K, SCR20 — 105 ↓ 1.16 Renal failure hemodialysis 
    Mother    — — 146 1.84 Unaffected 
    Father    — — 97 1.18 Unaffected 
Patient 3/Sweden 20/23, 25, 26 4 (at least) C870R, SCR15 672Q SCR11 (G homozygote), 936D 58 ↓ 0.50 Renal failure, hemodialysis, and after transplantation 
    Mother    — E936D 95 1.13 Unaffected 
    Father    C870R E936D 50 0.71 Unaffected 
Patient 4/Germany < 1/2, 3 E1198 stop C-257T, (C9669T) promoter 132 ↓ 0.84 Renal failure, peritoneal dialysis 
    Mother    E1198 stop C-257T 102 0.68 Unaffected 
    Father    — C-257T 98 1.38 Unaffected 
Patient/countryAge at debut/age at sampling, yNo. episodesSexFH
FH level, %40  (normal range, 69%-154%)FH function*C3 level, g/L (normal range, 0.77-1.38 g/L)Clinical features at sampling
Heterozygous mutationPolymorphism
Patient 1/Sweden 30/32, 33, 34 V1168E, SCR20 E936D SCR16, N1050Y SCR18 155 ↓ 0.59 Reduced renal function, plasma exchange every 7-14 d 
    Mother    V1168E N1050Y 152 ↓/N 1.81 Unaffected 
    Father     E936D 100 1.23 Lymphosarcoma 
Patient 2/USA§ 3/5, 8 E1198K, SCR20 — 105 ↓ 1.16 Renal failure hemodialysis 
    Mother    — — 146 1.84 Unaffected 
    Father    — — 97 1.18 Unaffected 
Patient 3/Sweden 20/23, 25, 26 4 (at least) C870R, SCR15 672Q SCR11 (G homozygote), 936D 58 ↓ 0.50 Renal failure, hemodialysis, and after transplantation 
    Mother    — E936D 95 1.13 Unaffected 
    Father    C870R E936D 50 0.71 Unaffected 
Patient 4/Germany < 1/2, 3 E1198 stop C-257T, (C9669T) promoter 132 ↓ 0.84 Renal failure, peritoneal dialysis 
    Mother    E1198 stop C-257T 102 0.68 Unaffected 
    Father    — C-257T 98 1.38 Unaffected 

— indicates not found.

*

Factor H dysfunction detected by hemolysis of sheep erythrocytes as described.41  Function normalized after addition of FH (final concentration 25 μg/mL) to patient serum.

Genomic DNA was sequenced and screened for mutations in the FH genes as described. Polymorphisms associated with increased risk for developing HUS are presented.42,43 

FH function was tested twice. Once it was normal, and once it was slightly reduced.

§

The patient was previously described in Vaziri-Sani et al.

The patient was previously described in Lang et al.44 

Assayed in Tübingen (normal range, 0.60-1.60 g/L).

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