Biomaterial Database

[The detection of beta-thalassemia minor (author's transl)]. 1980

P Beris, and G Boreux, and D Klein, and P A Miescher

A statistical analysis was done on the levels of Hb A2 and Hb F in 1 340 normal subjects and 356 subjects heterozygous for beta-thalassemia. This study revealed that both groups had a normal distribution of Hb A2 and a gaussologarithmic distribution of Hb F. The plotted curves show an overlapping zone between the two populations. This area lies between 3.0% and 3.5% Hb A2 and between 0.2% and 1.0% Hb F. More than 97% of the heterozygotes for beta-thalassemia have a Hb A2 level situated outside the overlapping region, which permits diagnosis. Of the remaining 3%, only the "silent carriers" do not manifest the usual hematological characteristics of beta-thalassemia minor (hypochromia, microcytosis, diminished osmotic fragility, and erythrocytes with basophilic stippling). To diagnose this group it is necessary to determine globulin chain synthesis. This test is reserved for those subjects considered as "high risks."

UI	MeSH Term	Description	Entries
D005006	Ethnicity	A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships.	Ethnic Groups,Nationality,Ethnic Group,Nationalities
D005916	Globulins	A group of proteins that are salt-soluble and form a large fraction of BLOOD PROTEINS. There are three types of globulins, ALPHA-GLOBULINS, BETA-GLOBULINS, and GAMMA-GLOBULINS, which are distinguished from one another by their degree of electrophoretic mobility.	Globulin
D006579	Heterozygote	An individual having different alleles at one or more loci regarding a specific character.	Carriers, Genetic,Genetic Carriers,Carrier, Genetic,Genetic Carrier,Heterozygotes
D012306	Risk	The probability that an event will occur. It encompasses a variety of measures of the probability of a generally unfavorable outcome.	Relative Risk,Relative Risks,Risk, Relative,Risks,Risks, Relative
D013223	Statistics as Topic	Works about the science and art of collecting, summarizing, and analyzing data that are subject to random variation.	Area Analysis,Estimation Technics,Estimation Techniques,Indirect Estimation Technics,Indirect Estimation Techniques,Multiple Classification Analysis,Service Statistics,Statistical Study,Statistics, Service,Tables and Charts as Topic,Analyses, Area,Analyses, Multiple Classification,Area Analyses,Classification Analyses, Multiple,Classification Analysis, Multiple,Estimation Technic, Indirect,Estimation Technics, Indirect,Estimation Technique,Estimation Technique, Indirect,Estimation Techniques, Indirect,Indirect Estimation Technic,Indirect Estimation Technique,Multiple Classification Analyses,Statistical Studies,Studies, Statistical,Study, Statistical,Technic, Indirect Estimation,Technics, Estimation,Technics, Indirect Estimation,Technique, Estimation,Technique, Indirect Estimation,Techniques, Estimation,Techniques, Indirect Estimation
D013557	Switzerland	A country in Europe. It is bordered by Austria, France, Italy, Liechtenstein, and Germany. The capital is Bern.
D013789	Thalassemia	A group of hereditary hemolytic anemias in which there is decreased synthesis of one or more hemoglobin polypeptide chains. There are several genetic types with clinical pictures ranging from barely detectable hematologic abnormality to severe and fatal anemia.	Thalassemias