Table 2.

Changes in aPL positivity through pregnancy^*

	aCL-positive		aβ2GPI-positive		LAC-positive n=79
Positive at baseline	IgG n=90	IgM n=29	IgG n=59	IgM n=26
Became negative at T2** Became negative at T3***	6 4	7 0	14 7	9 2	15 11
	aCL-negative		aβ2GPI-negative		LAC negative n=65
Negative at baseline	IgG n=59	IgM n=120	IgG n=89	IgM n=122
Became positive at T2** Became positive at T3***	6 0	2 3	6 1	5 2	12 1

^*aPL-positivity is defined according to Sapporo criteria: aCL and/or aβ2GPI titers (≥40 GPL or MPL units) and/or positive LAC (RVVT, dPT, aPTT). Negative aCL or aβ2GPI titers were defined as <40 GPL or MPL units.

^**8 patients had APOs and their pregnancies ended before T2

^***26 had APOs and their pregnancies ended before T3.

Abbreviations: aCL: Anticardiolipin antibodies; aβ2GPI: anti-β2 Glycoprotein I antibodies; LAC: Lupus anticoagulant; T2: 2^nd trimester of pregnancy; T3: 3^rd trimester of pregnancy.