Abstract |
A new (G) gamma(A)gamma(deltabeta)O- thalassemia (thal) was found in six unrelated Japanese individuals, and characterized by a method employing only polymerase chain reaction (PCR) and direct sequencing. This (G) gamma(A)gamma(deltabeta)O-thal mutation has removed a fragment of about 27 kb of DNA, that starts approximately 2.8 kb downstream of the Agamma- globin gene and ends in the L1 repeat sequence, 7.0 kb downstream of the beta-globin gene. The 5' breakpoint is similar to that of the previously reported Japanese (G) gamma(A)gamma(deltabeta)O-thal (called here Jpn type 1 for convenience). However, the 3' endpoint is quite different. This new Japanese deltabeta-thal, designated as Japanese type 2 (Jpn type 2), shows a deletion rather similar to Turkish type 3 deltabeta-thal but with 5' and 3' breakpoints located inside the deletion of Turkish type 3. A mutation-specific gap PCR was designed to diagnose patients with the Jpn type 2 (G) gamma(A)gamma(deltabeta)O-thal. The identified carriers exhibited a thalassemia minor.
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Authors | Yasuhiro Yamashiro, Yukio Hattori, Naoko Okayama, Emi Shinoda, Naomi Suyama, Tatehiko Tanaka, Shinji Ohi |
Journal | Hemoglobin
(Hemoglobin)
Vol. 29
Issue 3
Pg. 197-208
( 2005)
ISSN: 0363-0269 [Print] England |
PMID | 16114183
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
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Topics |
- Adolescent
- Child
- Child, Preschool
- Female
- Globins
(genetics)
- Humans
- Male
- Middle Aged
- Polymerase Chain Reaction
(methods)
- Sequence Deletion
- Thalassemia
(genetics)
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