Haplotypes of the beta-globin gene as prognostic factors in sickle-cell disease

We collaborated with researchers from Egypt, Syrian Arab Republic and Jordan in a study of patients with sickle-cell disease from those countries, and from various parts of Saudi Arabia, in order to investigate the influence of genetics on the clinical presentation of the disease, and to attempt to determine the origin of the sickle-cell gene in Arabs. Our results suggest that beta-globin gene haplotypes influence the clinical presentation of sickle-cell disease, and that there are at least two major foci for the origin of the sickle-cell gene, one in the eastern part of Saudi Arabia, and the other in the populations of North Africa and the north-western part of the Arabian peninsula

Features of sickle-cell disease in Bahrain

Genetic disorders of haemoglobin are prevalent in Bahrain. In a study of the hospital population covering 56 198 Bahrainis, we found that 2% of newborns have sickle-cell disease [SCD] and 18% have sickle-cell trait, while 24% are carriers of the [-thalassaemia gene. In a study of the presentation of SCD among Bahrainis it was found that the mild form of the disease predominates, but a wide clinical variability is apparent. It was also found that their haematological values are similar to those of patients from Eastern Province, Saudi Arabia, where the mild form of the disease predominates