CD40LG and autoimmune polyendocrinopathy: IgM aCL and/or aβ2GPIantibodies (1 aCL, 25 aβ2GPI, 3 aCL and aβ2GPI), alone or inassociation with IgG antibodies, were found in 53.7% (29/54) of women who fulfilled Sydneyclinical criteria for purely obstetric APS.