Comparisons of the different studies analysing the signification of aPZ-Ab on the thrombotic risk

ReferencesControls (n)Cut-off (AU/mL)PatientsConclusions
[18]82 donors from the blood bank1 (for IgG or IgM)*50 with arterial thrombosis, 64 with venous thrombosisaPZ-Ab (IgG) higher in patients with arterial thrombosis, but the vast majority < 1 AU/mL
[19]33 healthy volunteers

IgG:

75th pctl: 4.4

IgM:

75th pctl: 5.3

102 patients with lupus anticoagulant (LAC; 62 with thrombosis, 33 asymptomatic)IgM > 75th pctl more frequent in the patient group. Similar frequency of elevated aPZ-Ab (IgG or IgM) in patients with and without thrombosis
[20]59 healthy volunteers

IgG:

95th pctl: 10

IgM:

95th pctl: 10

86 consecutive patients with anticardiolipin (aCL) antibodies

Frequency aPZ-Ab in the patient group: 40.7%

The frequency of aPZ-Ab increases in patients with a double or triple positivity of antiphospholipid antibodies

Higher frequency of aPZ-Ab in patients with LAC (57.7%) than in patients without LAC (25.6%)

Similar frequency of elevated aPZ-Ab (IgG or IgM) in patients with and without thrombosis

High frequency of aPZ-Ab in patients with foetal loss

[21]23 healthy volunteersNR21 with central retinal vein occlusionNo significant difference in the frequency of aPZ-Ab between patients and cases

*: whereas all the studies used the same commercial assay, this one used a homemade assay. NR: not-reported