The serum IgE levels in 51 families consisting of children and their both parents were measured by PRIST. The majority of these families had one or more children with atopic diseases, and some had healthy children. The values obtained for these children were compared with the mean levels of serum IgE in healthy controls reported in my previous paper, and the correlation between serum IgE levels of children and their parents was examined. The results were as follows. 1. In the families in which IgE levels of both parents were over M+2SD, 88 percent of their children had IgE levels over M+SD, and 63 percent were found to have levels over M+2SD. In the families in which IgE levels of either or both of the parents were over M+SD, 52 percent of their children had levels over M+SD. In the families in which IgE levels of both parents were below M+SD, only 35 percent of their children had levels over M+SD. 2. In the families in which the father's IgE levels were over M+SD and the mother's levels below M+SD, 59 percent of the children had levels over M+SD, and in the families in which the mother's IgE levels were over M+SD and the father's levels below M+SD, 52 percent of the children had levels over M+SD. No significant difference was found in the incidence of high IgE levels in children in the two types of families. These results suggest that serum IgE levels of children may be controlled by genetic factors, and that there appears to be no sex difference involved as to the parents' genetic influence on serum IgE levels of their children.
View full abstract