The distribution of haptoglobin types in Okayama district

The distribution of haptoglobin (Hp) types of 600 healthy adults in Okayama district was examined by the method of Smithies', and the following results were obtained. 1) The phenotype distribution of Hp types in Okayama district was found to be: Hp 1-1, 39 (6.5%); Hp 2-1, 234 (39.0%); and Hp 2-2, 327 (54.5%), and the calculated genotype frequencies are Hp(1)=0.260 and Hp(2)=0.760. 2) No relationship between the distribution of Hp types and sex, ABO blood groups or Rh(D) blood groups was observed.