Kaaja R, Julkunen H, Ammälä P, Kurki P, Koskimies S
Department of Obstetrics and Gynecology, University of Helsinki, Finland.
Eur J Obstet Gynecol Reprod Biol. 1993 Sep;51(1):78-80. doi: 10.1016/0028-2243(93)90194-h.
A case of HLA identical twins with one affected by congenital heart block is reported. Both twins, as their mother, had more than 12-fold higher anti-Ro antibody titers compared to healthy controls, but no differences were observed between the affected and the healthy baby. It is possible that there is a third factor causing the manifestation of this disease.