- Mother with antibodies to SSA/Ro, SSB/La, or ribonucleoproteins (RNP) OR Child of mother with such antibodies who has neonatal lupus (congenital heart block, transient skin rash, and/or hepatic or hematologic manifestations) OR Father of neonatal lupus-affected child OR Maternal grandparents of neonatal lupus-affected child OR Maternal aunts and uncles of neonatal lupus-affected OR Unaffected siblings of neonatal lupus-affected child