Alpha-thalassemia resulting from deletion of regulatory sequences far
upstream of the alpha-globin structural genes
L Romao, L Osorio-Almeida, DR Higgs, J Lavinha and SA Liebhaber
Howard Hughes Medical Institute, Department of Human Genetics and Medicine,
University of Pennsylvania, Philadelphia 19104.
We describe an alpha-thalassemia determinant in which alpha-globin
expression is silenced by a deletion located 27 kb 5' to the transcription
start site of the alpha 2-globin gene. This alpha- thalassemic determinant,
(alpha alpha)MM, is a member of a newly described group of thalassemic
mutations resulting from deletion of locus-controlling sequences critical
to globin gene expression.
Volume 78,
Issue 6,
pp. 1589-1595,
09/15/1991
Copyright © 1991 by The American Society of Hematology