We progressively screened DNA samples from 613 individuals with ID initially for the most frequent ARX mutations ( c.304ins ( GCG ) ( 7 ) 'expansion ' of pA1 and c.429_452dup 'dup24bp ' of pA2 ) .
O O O O O O O O O B-DiseaseOrPhenotypicFeature O O O O O B-GeneOrGeneProduct O O B-SequenceVariant I-SequenceVariant I-SequenceVariant I-SequenceVariant I-SequenceVariant I-SequenceVariant I-SequenceVariant O O O O O B-SequenceVariant I-SequenceVariant O O O O O