A novel 7.9 kb deletion causing alpha+-thalassaemia in two independent families of Indian origin

Autor: Cornelis L, Harteveld, Peter, van Delft, Pierre W, Wijermans, Mies C, Kappers-Klunne, Jitske, Weegenaar, Monique, Losekoot, Piero C, Giordano
Rok vydání: 2003
Předmět:
Zdroj: British journal of haematology. 120(2)
ISSN: 0007-1048
Popis: We describe the characterization of a novel 7.9 kb deletion that eliminated one of the duplicated alpha-globin genes, causing an alpha+-thalassaemia phenotype in two independent carriers of Suriname-Indian origin. The molecular characterization of the deletion breakpoint fragment revealed neither involvement of Alu repeat sequences nor the presence of homologous regions prone to recombination, suggesting a non-homologous recombination event. This alpha+-thalassaemia deletion was found to give rise to an atypical haemoglobin H (HbH) disease characterized by a non-transfusion-dependent moderate microcytic hypochromic anaemia in combination with a poly adenylation signal mutation of the alpha-globin gene (alpha2 AATAAA --AATA-- --).
Databáze: OpenAIRE