Tumor TS 1494del6 allele ( frequency of allelic loss , 36 % ) was protective ( for each allele with the deletion , based on an additive model , HR = 0.42 ; 95 % CI , 0.22 to 0.82 ; P = .0034 ) .
B-DiseaseOrPhenotypicFeature B-GeneOrGeneProduct B-SequenceVariant O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O