Abstracts of the joint meeting of the Clinical Genetics Society and the Clinical Molecular Genetics Society held on 19 and 20 April 1990 at University of Newcastle upon Tyne Medical School

We studied 47 families from through- out the UK in whom there was at least one living member with ataxia telangiectasia (AT).These families contained 49 index cases (26 males and 23 females); 11 out of 79 sibs also had AT, no other relative was affected, and no patient had a child.All but six of the healthy sibs were clinically examined and had radiation studies performed on 645 copyright.