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. 1975 Mar;27(2):140–154.

Hereditary persistence of fetal hemoglobin, beta thalassemia, and the hemoglobin delta-beta locus: further family data and genetic interpretations.

N C Bethlenfalvay, A G Motulsky, B Ringelhann, H Lehmann, J R Humbert, F I Konotey-Ahulu
PMCID: PMC1762752  PMID: 1124762

Abstract

Three Negro kindreds with hereditary persistence of fetal hemoglobin (HPFH) alone and in combination with various other hemoglobin abnormalities including beta thalassemia are presented. Among 11 offspring of two women heterozygous for both HPFH and the delta chain mutation Hb B2, five inherited the HPFH gene and six inherited the Hb B2 gene. In another kindred, a man inferred to be heterozygous for both HPFH and Hb C had six children; three offsprivg obtained the Hb C gene and three the HPFH gene. Similarly, a woman heterozygous for both Hb S and HPFH transmitted the Hb S gene to one of her two children and the HPFH gene to the other. Thus among 19 offspring, no crossovers between the HPFH locus or the Hb delta-beta locus were observed. These and earlier data are compatible with deletion of the Hb beta and delta loci as the primary event to explain the genetic origin of HPFH. Genetic considerations indicate that the finding of a single person with a hematologically normal phenotype among offspring of heterozygotes for both the African type of HPFH and a Hb beta or Hb delta structural abnormality would invalidate the deletion model.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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