"21 Han Chinese patients with Cockayne syndrome type A were investigated to identify mutations in ERCC8/ERCC6 of which thirteen cases with CS-A were identified with the mutations of ERCC8. 5 types mutations of ERCC8 were identified. Exon 4 rearrangement mutation and c.394_398delTTACA were the major mutations present in Han Chinese patients with CS-A and also discovered three novel mutations."xsd:string