Haemoglobin variants, beta-thalassaemia and G-6-PD types in Liberia.
Haemoglobin variants, beta-thalassaemia and glucose-6-phosphate dehydrogenase (G-6-PD) types were studied in 702 individuals from Buchanan, Liberia. In this population haemoglobins S and C, beta-thalassaemia and G-6-PD deficiency were found together. There was a considerable tribal variation. In the tribes of eastern Liberia the S- and C-genes were uncommon and the beta-thalassaemia gene was rather frequent, while in western Liberia the S- and C-genes were more frequent and beta-thalassaemia uncommon. In the central and northern parts the S- and beta-thalassaemia genes were found together in relatively high frequencies. The rate of malaria infection was found to be lower in individuals with the sickle cell and beta-thalassaemia traits than in individuals with haemoglobin AA, but the difference was not statistically significant. The frequency of the delta-chain gene B2 was 1.4% in the total material and there was no significant tribal variation for this gene. The frequency of G-6-PD deficiency estimated in males was 16%.
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D005006:Ethnicity; D005260:Female; D005955:Glucosephosphate Dehydrogenase Deficiency / Q000453:epidemiology* / Q000235:genetics; D006444:Hemoglobin C / Q000235:genetics; D006451:Hemoglobin, Sickle / Q000235:genetics; D006455:Hemoglobins, Abnormal / Q000235:genetics*; D006801:Humans; D007223:Infant; D007988:Liberia; D008288:Malaria / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D013789:Thalassemia / Q000453:epidemiology* / Q000235:genetics
D006451:Hemoglobin, Sickle; D006455:Hemoglobins, Abnormal; D006444:Hemoglobin C