A new pthalassemia mutation, a frameshift mutation with an insertion of a single cytosine nucleotide in codon 27-28, is described. The propositus, who is compound heterozygous for this mutation and the IVSll-654 C+T p"-thalassemia mutation, has the phenotype of severe p-thalassemia major.
A common Chinese β-thalassemia mutation found in a Japanese family
✍ Scribed by Yuji Naritomi; Hitoshi Nakashima; Masaaki Kagimoto; Yasushi Naito; Eisuke Yokota; Takashi Imamura
- Publisher
- Springer
- Year
- 1990
- Tongue
- English
- Weight
- 284 KB
- Volume
- 84
- Category
- Article
- ISSN
- 0340-6717
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✦ Synopsis
We have identified the substitution of a thymine for a cytosine at nucleotide position 654 in the second intron of the [3-globin gene that causes [3-thalassemia in a Japanese family. This mutation was reported to occur rather frequently in patients of Chinese origin, but has rarely been found in other ethnic groups.
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An initiation codon mutation ATG-ATA of the p-globin gene was found in seven members of three generations of a family living in northern Sweden. This mutation, which has not previously been described, changes the initiation codon for methionine into a codon for isoleucine and will then result in a p