We have identified 14 families with ataxia-telangiectasia ( A-T ) in which mutation of the ATM gene is associated with a less severe clinical and cellular phenotype ( approximately 10 % -15 % of A-T families identified in the United Kingdom ) .
O O O O O O B-DiseaseOrPhenotypicFeature O B-DiseaseOrPhenotypicFeature O O O O O O B-GeneOrGeneProduct O O O O O O O O O O O O O O O O O O B-DiseaseOrPhenotypicFeature O O O O O O O O