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. 2018 Jun 1;29(8):2234–2243. doi: 10.1681/ASN.2018020184

Table 2.

Complement defects at the time of renal biopsy

No. Mutation(s) CFH-H3 ΔCFHR1-3 FHAA C4, g/L (0.11–0.35) C3, g/L (0.75–1.35) CPFA, % (>75) sC5b9, ng/ml (<337) C5b9 Formation on HMEC-1, % of the Control
Resting ADP Activated
TMA and severe hypertension
 1 No mutations N Y ND 0.35 1.45 119 1252 223a 190a
 2 CFI-P50A,37 THBD-T478I Y Y ND ND ND ND ND ND ND
 3 No mutations Y Y None 0.36 1.40 ND 4200 160 117
 4 No mutations N Y None 0.24 0.81 113 740 353a 205a
 5 No mutations N N None 0.35 1.56 113 3800 198a 204a
 6 No mutations N N None 0.23 1.17 ND 480 245a 340a
 7 No mutations Y N None 0.26 0.82 90 440 224a ND
 8 C3-R161W38 N Yb None 0.14 0.72 110 1840 373a 246a
 9 CFI-N151S37 N N ND 0.27 1.20 97 4200 395a 252a
 10 No mutations N N ND 0.19 0.87 99 1800 253a ND
 11 CFH-C853R Y N ND 0.21 0.63 104 1840 339a 253a
 12 C3-R161W38 Y N ND 0.30 0.88 94 640 463a 404a
 13 CD46-ΔD237/S238,39 CFH-Q950H27 Y Y None 0.28 0.89 97 1000 284a 272a
 14 C3-R161W38 N N None 0.20 0.69 95 2800 310a 325a
 15 No mutations N N None 0.25 1.10 105 1800 140 92
 16 C3-R161W38 Y N ND 0.47 0.74 ND ND 336a 283a
 17 No mutations Y N ND ND 0.64 50 ND 306a 255a
Hypertensive arterionephrosclerosis
 1 ND ND ND ND 0.33 1.37 122 2360 70 ND
 2 ND ND ND ND 0.37 1.36 122 888 89 71
 3 ND ND ND ND 0.26 0.95 67 ND 76 87
 4 ND ND ND ND 0.27 2.00 110 780 ND 81
 5 ND ND ND ND 0.38 1.22 103 1168 67 77

ΔCFHR1-3, deletion of complement factor H–related genes CFHR1 and CFHR3; FHAA, factor H autoantibodies; CPFA, classic pathway functional activity; HMEC-1, human microvascular endothelial cells of dermal origin; TMA, thrombotic microangiopathy; N, no; Y, yes, ND, not determined.

a

P value <0.05.

b

Genetic abnormality was found in heterozygosity.