Immunoglobulin levels and genetic polymorphisms in the Sukuma of Tanzania

In a sample of 150 Sukuma from north central Tanzania, immunoglobulin G, M, A, and E levels were studied in relation to the phenotypes in 22 polymorphic systems. No strong associations were detected, though there is a suggestion of an association between IgG and haptoglobin type, with elevation of mean levels in heterozygotes.