Serologic
parameters
First case
(father)
Second case
(first sister)
Third case
(second sister)
Third sisterMother
IgG 11.8 (8 – 18) 16 (8 – 18) 13.4 (7.9 – 17.7) 12 (7 – 15.1) 13.1 (8 – 18)
IgA 4 (0.9 – 4.5) 3.7 (0.86 – 4.3) 1.7 (0.7 – 3.65) 1.7 (0.45 – 2.3) 1.1 (0.9 – 4.5)
IgM 1.9 (0.6 – 2.5) 4.7 (0.68 – 2.3) 4.0 (0.6 – 2.2) 1.85 (0.6 – 2.2) 2.6 (0.7 – 2.8)
IgE 22 (< 104) 36 (< 104)
C3 1.1 (0.6 – 1.6) 1.3 (0.6 – 1.6) 1.1 (0.6 – 1.6) 1.3 (0.6 – 1.6) 1.15 (0.6 – 1.6)
C4 0.2 (0.15 – 0.4) < 0.08 (0.15 – 0.4) < 0.1 (0.15 – 0.4) 0.25 (0.15 – 0.4) 0.2 (0.15 – 0.4)
C1 INH (-) 10 % (-) (-) (+) (+)

aSerologic parameters levels expressed as mg/ml (range).
bC1-INH concentration: (-) = Deficiency C1 INH; (+) = Normal C1 INH.