From: Double seronegative myasthenia gravis with antiphospholipid syndrome: a case report
Antiphospholipid syndrome is present if at least one of the clinical criteria and one of the laboratory criteria that follow are met* | |
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CC1. Vascular thrombosis | One or more clinical episodes of arterial, venous, or small vessel thrombosis, in any tissue or organ** |
CC2. Pregnancy morbidity | a) One or more unexplained deaths of a morphologically normal fetus at or beyond the 10th week of gestation, with normal fetal morphology documented by ultrasound or by direct examination of the fetus, or |
b) One or more premature births of a morphologically normal neonate before the 34th week of gestation because of: (i) eclampsia or severe preeclampsia, or (ii) recognized features of placental insufficiency, or | |
c) Three or more unexplained consecutive spontaneous abortions before the 10th week of gestation, with maternal anatomic or hormonal abnormalities and paternal and maternal chromosomal causes excluded | |
LC1. Lupus anticoagulant | present in plasma on two or more occasions at least 12 weeks apart |
LC2. Anticardiolipin antibody | Of IgG and/or IgM isotype in serum or plasma present in medium or high titer (i.e. >40GPL or MPL, or > the 99th percentile), on two or more occasions at least 12 weeks apart |
LC3. Anti-β2 glycoprotein-I antibody | Of IgG and/or IgM isotype in serum or plasma (in titer > the 99th percentile), on two or more occasions at least 12 weeks apart |