Antitrypsin and Gc polymorphisms in some populations of Congo: an unusual, highly frequent mutant, PIS, in Bateke and Babenga

Four population samples from Congo (Beti and Bateke from Cuvette area, Bateke and Babenga from 'Pool' area) were typed for the electrophoretic mutants of protease inhibitor (PI) and group-specific component (Gc), as part of a general survey on the genetic structure of these ethnic groups. An unusual PI mutant (tentatively called PIS*) had a singularly high frequency in the Bateke and the Babenga. Data shown here will help in ascertaining whether genetic differentiation could exist in Congolese populations.