Frequency and distribution of structural variants of hemoglobin and thalassemic states in western Japan

T. Imamura, J. Sugihara, T. Matsuo, T. Maruyama, Y. Ohta, I. Sunrida, K. Yamaoka, T. Yanase

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


Hemolysates from 100,000 people who visited the Kyushu University Hospital and affiliated hospitals during the past 15 years were screened for hemoglobinopathies using electrophoresis on thin-layer starch gel; those exhibiting an abnormality were characterized further on clinical, biochemical, and genetic grounds. Of about 97,000 adult and 3,140 cord blood samples, 29 contained electropho-retically detectable abnormalities in the heterozygous condition. Another 17 samples had quantitative changes in the levels of the minor hemoglobin components. Of the thalassemic conditions, 12 involved βthalassemia, 3 αthalassemia, 1 δbeta;thalassemia, and l δthalassemia. Among 45 carriers of βthalassemia from 12 families, 5 were noted to have thalassemia intermedia since they exhibited much more severe hemolytic syndromes than those with typical βtha-lassemia minor. The frequency with which we could detect a structural variant of Hb A in the adults by electrophoresis was one in 3,800 samples. About one in 8,000 carried a βthalassemia gene.

Original languageEnglish
Pages (from-to)409-415
Number of pages7
Issue number3-4
Publication statusPublished - 1980
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Hematology
  • Genetics(clinical)
  • Clinical Biochemistry
  • Biochemistry, medical


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